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Journal articles on the topic 'Amaranthus dubius'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

de L. Lugo, Maria, Carlos E. Ortiz, and Evelyn Rosa-Marquez. "028 Amaranthus dubius Interference in Sweetpotato." HortScience 35, no. 3 (June 2000): 392F—393. http://dx.doi.org/10.21273/hortsci.35.3.392f.

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Amaranthus dubius is a common weed in sweetpotato production throughout the Caribbean Basin. A field study was conducted in the Agricultural Experiment Station at Juana Diaz, P.R., during 1998 to determine the effect of A. dubius interference in sweetpotato production under tropical conditions. Interference was evaluated by using a randomized complete-block design with four replications. Plots were four 6.1-m rows divided into two sections for yield and growth determinations. Intraspecific and interspecific interference was measured for both species. A. dubius was grown at 15 and 30 plants per meter of row. Plant dry weight and leaf area were determined at 3, 6, 9, 12, 15, and 18 weeks after planting (WAP). Sweetpotato yield was determined at 29 WAP. A. dubius growing alone reached a maximum leaf area index (LAI) of 8.5 at 12 WAP. Sweetpotato, however, did not attain maximum LAI. When grown with A. dubius, sweetpotato biomass was reduced at 15 WAP. This reduction was 62% and 66% for 15 and 30 A. dubius plants per meter of row, respectively. Sweetpotato yield in weed-free plots was equivalent to 9232 kg/ha. Yield reduction was 96% for 15 A. dubius per meter of row and 100% for 30 plants.

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2

Mujaffar, Saheeda, and Alex Lee Loy. "Drying Kinetics of Microwave-Dried Vegetable Amaranth (Amaranthus dubius) Leaves." Journal of Food Research 5, no. 6 (October 13, 2016): 33. http://dx.doi.org/10.5539/jfr.v5n6p33.

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The effect of microwave power level (200, 500, 700 and 1000W) on the drying behaviour of amaranth (Amaranthus dubius) leaves was investigated. Higher microwave power levels effected faster drying and there was an increase in drying rate constant (k) as microwave power level increased from 200 to 1000W and an increase in diffusivity (Deff) values from 3.04 x 10-10 to 2.82 x 10-9 m2/s. Leaves dried at 1000W power level however showed noticeable scorching after 540s of drying. Drying at the lower microwave power levels occurred in the constant and falling rate period, while at the higher power levels drying occurred in the falling rate period after an initial warm-up phase. Amaranth leaves could be dried at 700W power from an initial moisture content of 6.00 g H2O/g DM (85.7% wb) to 0.08 g H2O/g DM (7.6% wb) in 11.5 min. Overall, of the twenty-two thin layer models applied to the MR data, the Alibas model gave the best fit in terms of both the root mean square error (RMSE) and the chi-square statistic (c2).

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3

Mujaffar, Saheeda, and Alex Lee Loy. "The rehydration behavior of microwave-dried amaranth (Amaranthus dubius) leaves." Food Science & Nutrition 5, no. 3 (July 7, 2016): 399–406. http://dx.doi.org/10.1002/fsn3.406.

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4

Smith, Jason D., Fekadu F. Dinssa, Robert S. Anderson, Fu-cheng Su, and Ramasamy Srinivasan. "Identification of major insect pests of Amaranthus spp. and germplasm screening for insect resistance in Tanzania." International Journal of Tropical Insect Science 38, no. 04 (August 3, 2018): 261–73. http://dx.doi.org/10.1017/s1742758418000115.

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AbstractVegetable and grain amaranths represent a vital source of micronutrients and protein in Asia and Africa. However, various foliar lepidopteran pests and stem-mining weevils hinder amaranth production. Insect-resistant cultivars can enhance the productivity of this crop. Here, we report on the performances of amaranth varieties screened for their resistance to insect pests under the field conditions at The World Vegetable Center stations in Asia and sub-Saharan Africa. We conducted two preliminary screening trials with a total of 263 entries from around the world in Taiwan and a third preliminary screening trial with 49 African-indigenous entries in Tanzania. Promising entries from these preliminary trials were collectively evaluated in an advanced screening trial in Tanzania, to identify lines resistant to foliar and stem-boring pests in East Africa. Four entries exhibited moderate resistance to foliar pests: TZ51 and TZ53 (Amaranthus cruentus), TZ34 (A. dubius) and TZ39 (Amaranthus sp.). Five entries showed moderate resistance to stem weevils: TZ06 and TZ27 (A. cruentus), TZ52 (A. graecizans), TZ59 (A. palmeri) and TZ07 (Amaranthus sp.). Lepidopteran pests affecting leaves were reared to adulthood and identified as Spoladea recurvalis (Crambidae), Spodoptera exigua (Noctuidae) and Spodoptera littoralis (Noctuidae). Stem weevil larvae were also reared and identified as: Neocleonus sannio Herbst, Gasteroclisus pr. rhomboidalis Boheman, Hypolixus pr. haerens Boheman and Baradine sp. (Curculionidae). These results highlight key amaranth pests in East Africa and identify insect-resistant entries that will be useful in breeding programmes and resistance studies.

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5

GARCIA PARRA, LUIS, SANTIAGO RUIZ, HECTOR MENDOZA, and HECTOR PINEDA. "Utilización de amaranthus dubius (amaranthaceae) como alternativa alimentaria en cerdo criollo mestizado." Revista Colombiana de Ciencia Animal - RECIA 2, no. 2 (July 12, 2010): 331. http://dx.doi.org/10.24188/recia.v2.n2.2010.312.

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Este trabajo se llevó a cabo con el objetivo de evaluar el desempeño productivo de cerdos alimentados con Amaranthus dubius. Se evaluaron dietas a base de materiales alimenticios producidos en la región, con la adición de Amaranthus dubius (bledo de puerco), durante la ceba de cerdos criollos mestizados. Se utilizaron 12 doce animales, con peso medio de 18 Kg distribuidos en tres tratamientos, según diseño estadístico bloques completos al azar. Los animales alimentados con una dieta compuesta de maíz, premezcla mineral y vitamínica, pastoreo y A. dubius presentaron mayor ganancia de peso (0,278 g/día) que los que recibieron yuca en lugar de maíz (208 g/día). Los animales del grupo control (manejo tradicional) presentaron la menor ganancia de peso (133 g/día). Se destaca el potencial de uso de A. dubius como forraje alternativo en la ceba de cerdos en la región.

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6

Bang, Jun-Hyoung, Kyung Jun Lee, Won Tea Jeong, Seahee Han, Ick-Hyun Jo, Seong Ho Choi, Hyunwoo Cho, et al. "Antioxidant Activity and Phytochemical Content of Nine Amaranthus Species." Agronomy 11, no. 6 (May 21, 2021): 1032. http://dx.doi.org/10.3390/agronomy11061032.

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Amaranthus species are widely used as grain and leaf vegetables around the world and are potential dietary sources of antioxidants and phenolic compounds. In this study, we examined the variation in total flavonoid contents, total polyphenol contents, and antioxidant activities among 120 accessions of nine Amaranthus species. The antioxidant activity of DPPH (2,2-diphenyl-1-picrylhydrazyl) of the 120 amaranth accessions ranged from 1.1 (A. tricolor) to 75.2 (A. tricolor mg ascorbic acid equivalents (AAE)/g in 2018, and 8.5 (A. tricolor) to 68.8 (A. dubius) mg AAE/g in 2019. ABTS (2,2′-azinobis (3-ethylbenzothiazoline 6-sulfonate)) antioxidant activity ranged from 16.7 (A. tricolor) to 78.3 (A. hypochondriacus) mg AAE/g in 2018, and 36.6 (A. tricolor) to 79.2 (A. dubius) mg AAE/g in 2019. Total flavonoid content (TFC) of 2018 and 2019 ranged from 21.7 (A. caudatus) to 52.7 (A. hybridus) and from 22.3 (A. viridis) to 54.7 (A. tricolor), respectively Antioxidant activities were compared using two methods and all components were measured in plants grown both in 2018 and 2019. We identified wide variation among the accessions and between plants grown in the two years. Antioxidant activities and phytochemical contents were consistently negatively correlated. The nine species and 120 accessions clustered into three groups according to their antioxidant activities, total flavonoid contents, and total polyphenol contents in each year. These results provide information about the nutritional profiles of different Amaranthus species.

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7

SINDHU, ARYA, ANILKUMAR VENUGOPALAN NAIR SARADHAMMA, VISHNU WALSAN KALARIKKAL, and DUILIO IAMONICO. "Amaranthus rajasekharii (Amaranthaceae), a new species from Kerala (SW-India)." Phytotaxa 433, no. 2 (February 17, 2020): 153–60. http://dx.doi.org/10.11646/phytotaxa.433.2.6.

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A new species of Amaranthus from Kerala (SW-India)—Amaranthus rajasekharii—is described and illustrated. Macro- and micro-morphological descriptions (with SEM analysis of pollen and seed), as well as original photos and drawings were provided. The new species is similar to A. dubius, from which it differs by stem color, inflorescence structure, gynoecium colour, number of stamens, and shape and lenght of tepals and bracts in pistillate flowers, seed ornamentation, and pollen architecture.

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8

Wulff, Renata D. "INTRASPECIFIC VARIATION IN GERMINATION REQUIREMENTS AND GROWTH IN AMARANTHUS DUBIUS." American Journal of Botany 75, no. 9 (September 1988): 1307–12. http://dx.doi.org/10.1002/j.1537-2197.1988.tb14191.x.

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9

Lee, J. S., B. R. Kim, and Y. J. Choi. "First Report of White Blister Rust Disease Caused by Wilsoniana amaranthi on Amaranthus dubius in Korea." Plant Disease 104, no. 4 (April 2020): 1261. http://dx.doi.org/10.1094/pdis-10-19-2107-pdn.

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10

Mala, R., A. S. Ruby Celsia, R. Mahalakshmi, and S. Rajeswari. "Agronomic Biofortification of Amaranthus dubius with Macro Nutrients and Vitamin A." IOP Conference Series: Materials Science and Engineering 225 (August 2017): 012214. http://dx.doi.org/10.1088/1757-899x/225/1/012214.

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11

Singh, A. K., Uday Pathre, and P. V. Sane. "Purification and Characterization of Leucine Aminotransferase from Green Leaves of Amaranthus dubius." Biochemie und Physiologie der Pflanzen 187, no. 5 (January 1991): 337–45. http://dx.doi.org/10.1016/s0015-3796(11)80037-5.

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12

Abhilash, ES, AS Aswathi, and Sheeja P. Parayil. "Influence of organic manures and biofertilizers on the yield of Amaranthus dubius." Asia Pacific Journal of Environment Ecology and Sustainable Development 1, no. 1 (January 5, 2014): 26–28. http://dx.doi.org/10.3126/apjeesd.v1i1.9507.

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The maximum productivity was shown by vermicompost (T1) treated plants. The next higher productivity was exhibited by Pseudomonas treated plants (T2). After 30 th day vermicompost treated plants had higher growth rate compared to pseudomonas treated plants. The leaves of vermicompost treated plants are large and more greenish in colour. The stem is more swollen and hard. Pseudomonas also showed comparatively greater vegetative growth to Amaranth plants. DOI: http://dx.doi.org/10.3126/apjeesd.v1i1.9507Asia Pacific Journal of Environment Ecology and Sustainable Development 2013; 1: 26-28

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13

Sánchez-Urdaneta, Adriana Beatriz, Keyla Carolina Montero-Quintero, Pedro González-Redondo, Edgar Molina, Belkys Bracho-Bravo, and Rafael Moreno-Rojas. "Hypolipidemic and Hypoglycaemic Effect of Wholemeal Bread with Amaranth (Amaranthus dubius Mart. ex Thell.) on Sprague Dawley Rats." Foods 9, no. 6 (June 1, 2020): 707. http://dx.doi.org/10.3390/foods9060707.

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The effect of consuming breads made with wheat flour and Amaranth (Amaranthus dubius Mart. ex Thell.) wholemeal flour on Sprague Dawley rats with hyperlipidaemia and hyperglycaemia induced through feeding was studied. Four diets were provided: control (CD: Ratarina®), commercial bread (CBD), bread with 100 g·kg−1 (ABD10) and 200 g·kg−1 (ABD20) amaranth flour. Zoometric and blood chemistry parameters were measured before and after consuming the diets. A completely random factorial design of 2 × 4 × 2 was used. The factors were blood lipids and glucose level (normal, N and elevated, E), diet (CD, CBD, ABD10 and ABD20) and sex (female, F and male, M). The rats consuming ABD10 and ABD20 diets presented the lowest glucose values, although with no differences (p > 0.05) between the groups of elevated blood lipids and glucose rats (E). Triglyceride concentrations decreased in ABD10 and ABD20 treatments in comparison with CD, elevated blood lipids and glucose (E) rats, while ABD10 rats showed lower total cholesterol level than normal (N) rats. The high-density lipoprotein cholesterol values increased in the ABD10 and ABD20 groups (p < 0.05), while it did lower for very low-density lipoprotein cholesterol and cardiac risk index (p < 0.05). In ABD10 and ABD20 treatments, the abdominal circumference decreased in both sexes (p < 0.05) between weeks 23 and 31. In conclusion, consumption of bread with amaranth improved lipid profiles of rats and could help to prevent metabolic and cardiovascular diseases.

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14

Hemavani, C., and B. Thippeswamy. "Arbuscular mycorrhizal fungi associated with Amaranthus dubius mart.ex thell and Gomphrena globosa L ." Bangladesh Journal of Scientific and Industrial Research 49, no. 1 (May 8, 2014): 59–62. http://dx.doi.org/10.3329/bjsir.v49i1.18857.

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Arbuscular mycorrhizal fungi are found associated with more than 80% of the plants. But most of the studies show that Amaranthaceae is non mycorrhizal. The present study states the presence of arbuscular mycorrhizal association with Amaranthus dubius Mart ex Thell and Gomphrena globosa L which belong to Amaranthaceae. The plants were screened for the examination of presence of arbuscules, vesicles in the roots and spores in the rhizosphere soil which help to know that mycorrhiza is associated with Amaranthaceae species. DOI: http://dx.doi.org/10.3329/bjsir.v49i1.18857 Bangladesh J. Sci. Ind. Res. 49(1), 59-62, 2014

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15

Ruth, Olusanya N., Kolanisi Unathi, Ngobese Nomali, and Mayashree Chinsamy. "Underutilization Versus Nutritional-Nutraceutical Potential of the Amaranthus Food Plant: A Mini-Review." Applied Sciences 11, no. 15 (July 27, 2021): 6879. http://dx.doi.org/10.3390/app11156879.

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Amaranthus is a C4 plant tolerant to drought, and plant diseases and a suitable option for climate change. This plant could form part of every region’s cultural heritage and can be transferred to the next generation. Moreover, Amaranthus is a multipurpose plant that has been identified as a traditional edible vegetable endowed with nutritional value, besides its fodder, medicinal, nutraceutical, industrial, and ornamental potentials. In recent decade Amaranthus has received increased research interest. Despite its endowment, there is a dearth of awareness of its numerous potential benefits hence, it is being underutilized. Suitable cultivation systems, innovative processing, and value-adding techniques to promote its utilization are scarce. However, a food-based approach has been suggested as a sustainable measure that tackles food-related problem, especially in harsh weather. Thus, in this review, a literature search for updated progress and potential uses of Amaranthus from online databases of peer-reviewed articles and books was conducted. In addition, the nomenclature, nutritional, and nutraceutical value, was reviewed. The species of focus highlighted in the review include, A. blitum, A. caudatus, A. cruentus, A. dubius, A. hypochondriacus, A. spinosus, A. thunbergii, A. tricolor, and A. viridis.

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Chandravanshi, Deepika, P. K. Sharma, C. Banjare, and Deepa Chandravanshi. "Genetic Diversity of Amaranthus dubius Mart. (Khedha) Used Tribal Place in Chhattisgarh, India." International Journal of Bio-resource and Stress Management 9, no. 5 (October 7, 2018): 634–40. http://dx.doi.org/10.23910/ijbsm/2018.9.5.1865e.

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17

Khasabulli, Buyela D., David M. Musyimi, Opande George, and Margaret N. Gichuhi. "Allelopathic Effect of Bidens Pilosa on Seed Germination and Growth of Amaranthus Dubius." Journal of Asian Scientific Research 8, no. 3 (2018): 103–12. http://dx.doi.org/10.18488/journal.2.2018.83.103.112.

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18

Devi, A. Nithya, M. Madhu Priya, S. Monika, N. P. Yazhini, N. Switha, and R. Nivedha. "Effect of Organic Spray on Growth and Yield of Amaranthus Dubius var. Co – 1." International Journal of Current Microbiology and Applied Sciences 9, no. 6 (June 10, 2020): 1227–33. http://dx.doi.org/10.20546/ijcmas.2020.906.151.

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19

Harshiny, Muthukumar, Chandrasekaran Nivedhini Iswarya, and Manickam Matheswaran. "Biogenic synthesis of iron nanoparticles using Amaranthus dubius leaf extract as a reducing agent." Powder Technology 286 (December 2015): 744–49. http://dx.doi.org/10.1016/j.powtec.2015.09.021.

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20

Ortiz Sánchez, Yatzari L., Orlando O. Osorio Burgos, and Maira Edith Diaz-Vergara. "Detección molecular de Begomovirus en arvenses asociadas al cultivo de tomate (Solanum lycopersicum) en Panamá." Acta Agronómica 68, no. 4 (January 16, 2020): 319–25. http://dx.doi.org/10.15446/acag.v68n4.77945.

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El distrito de Los Santos es el mayor productor de tomate industrial de Panamá y en los últimos años se ha registrado hasta 100% de infección con begomovirus (Geminiviridae) en los campos de cultivo. El objetivo de este trabajo fue identificar los hospederos alternativos de begomovirus durante la época de cultivo y de barbecho. En la temporada 2016-17 se recolectaron 110 muestras de arvenses sintomáticas y asintomáticas en 10 fincas ubicadas en el distrito de Los Santos, provincia de Los Santos, República de Panamá. La detección de begomovirus se hizo por medio de la técnica de reacción en cadena de la polimerasa (PCR) utilizando los cebadores degenerados AVCORE 494 y ACCORE 1048. Del total recolectado, 37 arvenses resultaron positivas pertenecientes a 10 especies y 6 familias. Las especies, en orden descendente, de prevalencia de la infección fueron: Physalis angulata, Mimosa sp. y Amaranthus dubius (100%), Calopogonium mucunoides (78%), Rhynchosia minima (67%), Cleome viscosa (60%), Amaranthus spinosus (50%), Hybanthus attenuatus (50%), Malvastrum americanum (25%) y Malachra alceifolia (17%). Hasta la fecha del estudio, éste era el primer registro para Panamá de las arvenses A. dubius, A. spinosus, C. mucunoides, C. viscosa, H. attenuatus, M. alceifolia, M. americanum y P. angulata como hospederas de begomovirus asociadas al cultivo de tomate industrial en Panamá. Estos resultados nos indican que las arvenses asociadas al cultivo de tomate en el distrito de Los Santos son reservorios de begomovirus durante todo el año.

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Molina, Edgar, Pedro González-Redondo, Rafael Moreno-Rojas, Keyla Montero-Quintero, Belkys Bracho, and Adriana Sánchez-Urdaneta. "Effects of diets with Amaranthus dubius Mart. ex Thell. on performance and digestibility of growing rabbits." World Rabbit Science 23, no. 1 (March 25, 2015): 9. http://dx.doi.org/10.4995/wrs.2015.2071.

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22

DIXIT, A. "Chloroplast Doublets and Differential Staining of the Cell Walls in Photosynthetic Tissues of Amaranthus dubius Mart." Annals of Botany 56, no. 1 (July 1985): 143–45. http://dx.doi.org/10.1093/oxfordjournals.aob.a086982.

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23

Gichana, Zipporah, David Liti, Joseph Wakibia, Erick Ogello, Silke Drexler, Paul Meulenbroek, Robert Ondiba, Werner Zollitsch, and Herwig Waidbacher. "Efficiency of pumpkin (Cucurbita pepo), sweet wormwood (Artemisia annua) and amaranth (Amaranthus dubius) in removing nutrients from a smallscale recirculating aquaponic system." Aquaculture International 27, no. 6 (August 28, 2019): 1767–86. http://dx.doi.org/10.1007/s10499-019-00442-x.

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24

Ahmad, A. T., I. U. Bello, S. M. Jibril, O. S. Kolawole, J. J. Ogah, and S. Daniel. "Comparative evaluation of the effects of organic and inorganic fertilizers on the vegetative growth of spleen amaranth (Amaranthus dubius L)." Journal of Applied Sciences and Environmental Management 23, no. 2 (March 11, 2019): 359. http://dx.doi.org/10.4314/jasem.v23i2.24.

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25

Nderitu, Kathryn Wanjiku, Njagi Shadrack Mwenda, Ndegwa John Macharia, Stephen Super Barasa, and Mathew Piero Ngugi. "Antiobesity Activities of Methanolic Extracts ofAmaranthus dubius,Cucurbita pepo, andVigna unguiculatain Progesterone-Induced Obese Mice." Evidence-Based Complementary and Alternative Medicine 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/4317321.

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Amaranthus dubius,Vigna unguiculata,andCucurbita pepoare traditionally used to manage obesity in Kenya but lack scientific validation to support their use. The aim of this study was to determine the antiobesity activity of methanolic leaf extracts of these plants in progesterone-induced obese mice. The activity of the methanolic leaf extracts was orally bioscreened in progesterone-induced obese mice at 200 mg/kg/bw and 400 mg/kg/bw. Body mass index was calculated once per week for four weeks and blood samples were obtained at the end of the experiment for lipid profile analysis. Antiobesity activities of the extracts were compared with the controls. Leaf extracts ofA. dubius,C. pepo,andV. unguiculata,at dose concentrations of 200 mg/kgbw and 400 mg/kgbw, showed significant effects on body mass index (p<0.05). There was no significant difference between the three extracts on lipid parameter profiles (p>0.05). The present study showed high food intake in the negative control group as compared with normal control, positive control, and treatment groups. These extracts contained various phytochemicals such as saponins, flavonoids, alkaloids, and steroids and therefore validate use of aforementioned plants in the suppression of obesity and their use for management of obesity is recommended.

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Molina, Edgar, Pedro González-Redondo, Rafael Moreno-Rojas, Keyla Montero-Quintero, and Adriana Sánchez-Urdaneta. "Effect of the inclusion of Amaranthus dubius in diets on carcass characteristics and meat quality of fattening rabbits." Journal of Applied Animal Research 46, no. 1 (February 7, 2017): 218–23. http://dx.doi.org/10.1080/09712119.2017.1287078.

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27

Yong, Yi Yi, Gary Dykes, Sui Mae Lee, and Wee Sim Choo. "Comparative Study of Betacyanin Profile and Antimicrobial Activity of Red Pitahaya (Hylocereus polyrhizus) and Red Spinach (Amaranthus dubius)." Plant Foods for Human Nutrition 72, no. 1 (December 5, 2016): 41–47. http://dx.doi.org/10.1007/s11130-016-0586-x.

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28

Chitambo, Oliver, Solveig Haukeland, Komi K. M. Fiaboe, and Florian M. W. Grundler. "African Nightshade and African Spinach Decrease Root-Knot Nematode and Potato Cyst Nematode Soil Infestation in Kenya." Plant Disease 103, no. 7 (July 2019): 1621–30. http://dx.doi.org/10.1094/pdis-07-18-1193-re.

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Plant-parasitic nematodes, particularly root-knot nematodes (RKN: Meloidogyne spp.) and cyst nematodes (CN: Globodera and Heterodera spp.) cause severe yield reduction in most cultivated crops and are of high economic importance. African nightshade (Solanum spp.) and African spinach (Amaranthus spp.) are important African indigenous vegetables (AIV) and are rich sources of nutrition and income. However, their host status to plant-parasitic nematodes remains largely speculative. Therefore, a survey was conducted which revealed that S. villosum exhibited high root galling, whereas on S. scabrum, A. cruentus, and A. dubius root galling was rare or very low. Additionally, soil collected from the rhizosphere of S. villosum and S. scabrum contained few cysts of potato cyst nematodes (PCN), and no developing PCN females were observed on the roots of growing plants. Therefore, we studied the dynamics of RKN and PCN on A. dubius, A. cruentus, S. scabrum, and S. villosum over 2 years in a field experiment. The effects of AIV crop species on RKN and PCN soil infestation were evaluated using susceptible S. lycopersicum or S. tuberosum. After first, second, and third cultivation of A. dubius, A. cruentus, and S. scabrum, RKN infestation of the soil decreased by more than 85%, whereas S. scabrum and S. villosum decreased PCN densities by more than 80%. When cropping susceptible crops, after three seasons of successive cultivation of these AIV, galling index and number of developing PCN females measured on susceptible crops decreased by more than 75%. Wilting and RKN-PCN coinfection incidences also decreased significantly. Here, we present data that support the development of a novel cropping system including African spinach and African nightshade, which reveals a high potential to manage RKN and PCN in an environmentally friendly, effective, and productive way.

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Güerere, P., D. T. Chirinos, F. Geraud-Pouey, E. Moriones, M. A. Santana, M. A. Franco, I. Galindo-Castro, and G. Romay. "Experimental transmission of the mild strain of Tomato yellow leaf curl virus (TYLCV) to Amaranthus dubius by Bemisia tabaci." Phytoparasitica 40, no. 4 (June 10, 2012): 369–73. http://dx.doi.org/10.1007/s12600-012-0237-1.

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30

Sigamoney, M., S. Shaik, P. Govender, S. B. N. Krishna, and Sershen. "African leafy vegetables as bio-factories for silver nanoparticles: A case study on Amaranthus dubius C Mart. Ex Thell." South African Journal of Botany 103 (March 2016): 230–40. http://dx.doi.org/10.1016/j.sajb.2015.08.022.

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31

López-López, Karina, Frenyiline Jara-Tejada, and Juan Carlos Vaca-Vaca. "Caracterización molecular de un nuevo begomovirus aislado de cinco especies de arvenses colectadas en cultivos de tomate en Valle del Cauca." Acta Biológica Colombiana 24, no. 3 (September 1, 2019): 528–37. http://dx.doi.org/10.15446/abc.v24n3.79366.

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Las arvenses son hospederos alternos de begomovirus (Geminiviridae), los cuales facilitan su persistencia y propagación a cultivos de interés agronómico, como el tomate. El objetivo de esta investigación fue obtener el genoma completo de un begomovirus bipartita encontrado en Amaranthus dubius, Rivina humilis, Rhynchosia minima, Desmodium sp. y Caesalpinia sp., las cuales fueron colectadas en cultivos de tomate en Ginebra y Cerrito, Valle del Cauca. El genoma del begomovirus fue obtenido utilizando amplificación por círculo rodante y digestión con las enzimas EcoRI y EcoRV, las cuáles cortan el componente genómico A y B, respectivamente. Estos fragmentos fueron clonados, secuenciados y analizados. Finalmente, se verificó la presencia de este begomovirus en todas las arvenses mediante PCR específico. Se obtuvieron tres clonas EcoRI y cinco clonas EcoRV. Los fragmentos que portan los componentes A y B presentan un tamaño de 2 584 y 2 543 nt, respectivamente. El análisis de secuencia de nucleótidos del genoma begomoviral A con otros begomovirus previamente reportados, mostró la mayor identidad (90,9 %) con el virus del mosaico dorado de Rhynchosia de Yucatán. Tomando como base el criterio de demarcación actual para las especies de Begomovirus establecido por el Comité Internacional de Taxonomía de Virus, el geminivirus aislado de las arvenses A. dubius, R. humilis, R. minima, Desmodium sp. y Caesalpinia sp., constituye una nueva especie begomoviral. Con base en la sintomatología observada en campo, se propone el nombre de Virus del mosaico dorado de Rhynchosia de Colombia para designar a esta nueva especie.

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JONNALAGADDA, SREEKANTH, ANDREW KINDNESS, and VIREN CHUNILALL. "Effect of Coal Mine Soil Contamination on the Elemental Uptake and Distribution in Two Edible Amaranthus Species, A . dubius and A . hybridus." Journal of Environmental Science and Health, Part B: Pesticides, Food Contaminants, and Agricultural Wastes 41, no. 5 (June 1, 2006): 747–64. http://dx.doi.org/10.1080/03601230600704324.

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Yong, Y. Y., G. Dykes, S. M. Lee, and W. S. Choo. "Biofilm inhibiting activity of betacyanins from red pitahaya (Hylocereus polyrhizus ) and red spinach (Amaranthus dubius ) against Staphylococcus aureus and Pseudomonas aeruginosa biofilms." Journal of Applied Microbiology 126, no. 1 (October 17, 2018): 68–78. http://dx.doi.org/10.1111/jam.14091.

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WULFF, RENATA D. "Growth responses of soybean (Glycine max) and sorghum (Sorghum bicolor) to an increase in density of Amaranthus dubius (L.) plants at two temperatures." Weed Research 27, no. 2 (April 1987): 79–85. http://dx.doi.org/10.1111/j.1365-3180.1987.tb00739.x.

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Otusanya, O. O., A. A. Sokan-Adea, and O. J. Ilori. "Allelopathic Effect Of the Root Exudates of Tithonia diversifolia on the Germination, Growth and Chlorophyll Accumulation of Amaranthus dubius L. and Solanum melongena L." Research Journal of Botany 9, no. 2 (June 15, 2014): 13–23. http://dx.doi.org/10.3923/rjb.2014.13.23.

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Anten, N. P. R., and M. J. A. Werger. "Canopy structure and nitrogen distribution in dominant and subordinate plants in a dense stand of Amaranthus dubius L. with a size hierarchy of individuals." Oecologia 105, no. 1 (1996): 30–37. http://dx.doi.org/10.1007/bf00328788.

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Islam, Mohammad Saiful, Md Sirajul Islam, Tanmoy Roy Tusher, Mausumi Rehnuma, and Md Humayun Kabir. "Measurement of Growth, Yield, Biomass and Heavy Metals Accumulation in Red Spinach Grown under Industrial Effluents." Grassroots Journal of Natural Resources 2, no. 4 (December 31, 2019): 26–37. http://dx.doi.org/10.33002/nr2581.6853.02043.

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The study was conducted to measure the growth, yield, biomass and heavy metal accumulation in red spinach (Amaranthus dubius) irrigated with treated and untreated industrial effluents, and groundwater. A total of twelve experimental plots, with three treatments (treated, untreated industrial effluents and groundwater) and four replications, were prepared inside the Jananeta Abdul Mannan Hall of Mawlana Bhashani Science and Technology University campus, where red spinach was cultivated and irrigated with 2.5 liter treated, untreated industrial effluents and groundwater in each plot. The content of Zn as 193.28, 182.83, 136.55 and 210.07 ppm, Cd as 0.77, 0.87, 0.93 and 1.03 ppm, Cu as 47.32, 48.93, 57.29 and 73.58 ppm, were recorded in initial soil, soil irrigated with groundwater, treated and untreated industrial effluents, respectively. The content of Zn as 0.00, 0.00 and 0.07 ppm, Cd as 0.004, 0.006 and 0.011 ppm, and Cu as 0.00, 0.02 and 0.68 ppm, were recorded in groundwater, treated and untreated industrial effluent, respectively. The content of Zn as 61.64, 65.30 and 67.67 ppm, Cd as 0.33, 0.52 and 0.57 ppm, Cu as 5.73, 7.79 and 7.95 ppm, were investigated from red spinach plant irrigated with groundwater, treated and untreated industrial effluent, respectively. The levels of cadmium in the red spinach were much higher than that of WHO/ FAO recommended level.

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Ramírez, Agripina, Gregorio García, Olaf Werner, José Navarro-Pedreño, and Rosa M. Ros. "Implications of the Phytoremediation of Heavy Metal Contamination of Soils and Wild Plants in the Industrial Area of Haina, Dominican Republic." Sustainability 13, no. 3 (January 29, 2021): 1403. http://dx.doi.org/10.3390/su13031403.

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The study evaluates pollution by Pb, Zn, and Cr, and a possible sustainable solution through phytoremediation technologies, in the surroundings of Haina, a very polluted area of the Dominican Republic. Soils and plants were analyzed at 11 sampling points. After sample processing, the elemental composition was analyzed by ICP-OES. Soil metal concentrations, contaminating factors, pollution load indexes, and the Nemerow pollution index were assessed. Soil metal concentrations showed Pb > Zn > Cr, resulting in very strong Pb pollution and medium-impact Zn pollution, with an anthropogenic origin in some sites. This means that some agricultural and residential restrictions must be applied. Accumulation levels in plant tissues, bioaccumulation factors in roots and shoots, and translocation factors were determined for Acalypha alopecuroidea, Achyranthes aspera, Amaranthus dubius, Bidenspilosa, Heliotropium angiospermum, Parthenium hysterophorus, and Sida rhombifolia. The vast majority of the plants showed very low levels of the potentially toxic elements studied, although it may be advisable to take precautions before consumption as they are all considered edible, fodder, and/or medicinal plants. Despite their low rate of bioaccumulation, most of the plants studied could be suitable for the application of phytoremediation of Zn in the field, although further studies are needed to assess their potential for this.

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Oruko Ongon’g, Richard, Joshua N. Edokpayi, Titus A. M. Msagati, Nikita T. Tavengwa, Grace N. Ijoma, and John O. Odiyo. "The Potential Health Risk Associated with Edible Vegetables Grown on Cr(VI) Polluted Soils." International Journal of Environmental Research and Public Health 17, no. 2 (January 10, 2020): 470. http://dx.doi.org/10.3390/ijerph17020470.

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This study reports on the assessment of the growth potential of five edible vegetables, which were grown in Cr(VI) spiked soils. The vegetable plants that were used in this study were Vigna angularis, Cicer arietinum, Spinacia oleracea, Amaranthus dubius Thell and Phaseolus vulgaris. Dried ground samples from roots, stems and leaves were analysed for various oxidation states of Cr. The daily intake of chromium, hazard quotient (HQ) and hazard index (HI) methods were employed to assess the potential human health risks posed by these Cr oxidation states through vegetable consumption. The results showed that Vigna angularis was the only vegetable that germinated in highly concentrated Cr(VI) in the simulated soil (456 mg/kg). The highest total chromium (ChT) bioaccumulated in the roots was found in Phaseolus vulgaris at 0.8. The highest ChT translocation factor in the stem was that of Cicer arietinum and Vigna angularis at 0.30. The same plants translocated the highest ChT to the leaf at 0.7. A child or an adult consuming such contaminated Cicer arietinum vegetables were likely to take in between 508 and 785 mg/day of ChT, which are above the World Health Organisation guidelines of 220 and 340 mg/day, respectively. The highest HQ was found in Cicer arietinum at 8.7 and 13.4 for adults and children, respectively. The same species of plants also had high HI at 17.4 and 27.2 for adults and children, respectively. This indicated that consumers of the edible vegetables grown in Cr(VI) rich soils may be exposed to health risks, and the children were more likely to be vulnerable to these adverse effects than the adults.

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Morán Sánchez, Nuvia Lucrecia, Alexandra Aracely Navarrete Cornejo, and Ketty Zoraida Vergara Mendoza. "Estudio de efectos alelopaticos de girasol (helianthus annus) en malezas predominantes en el cultivo de fréjol (phaseolus vulgaris)." Pro Sciences: Revista de Producción, Ciencias e Investigación 3, no. 18 (January 30, 2019): 1–5. http://dx.doi.org/10.29018/issn.2588-1000vol3iss18.2019pp1-5.

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Existen grandes probabilidades de utilizar las sustancias alelopáticas producidas por las plantas como mecanismo de defensa o de ataque para encontrar nuevas estrategias para el control de las arvenses. Este trabajo tuvo como objetivo Generar alternativas naturales para el combate de malezas en el cultivo de fréjol, mediante sustancias alelopáticas. La investigación se realizó en el cantón La Troncal, Prov. Del Cañar. Lo factores estudiados fueron: Extracto de raíz, tallo y hojas de girasol sobre las semillas de arvenses de Bledo (Amaranthus dubius), Betilla (Ipomoea spp), Lechosa (Euphorbia hyrta), paja de burro (Eleusine indica), Caminadora (Rothboellia exaltat). Cada uno de los extractos se aplicó y evaluó en forma individual sobre las cinco malezas en estudio. Concluyendo que los datos más bajos los presentó el tratamiento I (extracto de raíz de girasol) con un promedio de 35,65, frente al testigo que alcanzo un promedio de 42.13. Notándose que los extractos estudiados influyeron en el desarrollo del cultivo de fréjol. Con el tratamiento uno las semillas obtuvieron mayor peso presentando un promedio de 84,03 gr, con relación al testigo que presento el promedio más bajo de 75,70 gr. A los cinco días se observó que las malezas estudiadas presentaron un retardo en su germinación, no así la caminadora y el testigo. Los tratamiento estudiados a los 15, 30 y 45 en relación a la altura de planta de las malezas emergidas el bledo, betilla, paja de burro, lechosa presentaron un retardo en el crecimiento en relación al testigo que presento siempre promedios superiores. Notándose también que disminuyo la incidencia de malezas en cada uno de los tratamientos.

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Aguilar, Elba Graciela, Miguel Angel Cantarelli, Eduardo Jorge Marchevsky, Nora Lilian Escudero, and José Manuel Camiña. "Study and Determination of As, Cr, and Pb in Amaranth Seeds." Journal of Chemistry 2013 (2013): 1–4. http://dx.doi.org/10.1155/2013/138391.

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The concentration of As, Cr, and Pb toxic elements was determined in three species of amaranth seeds:A. hypochondriacus,A. cruentus, andA. dubius. The determinations were carried out by inductively coupled plasma optical atomic spectroscopy (ICP-OES). The result shows that Cr and As were found in minor concentrations than allowed by the World Health Organization (WHO; 120 and 4 mg kg−1resp.); As (mg kg−1):A. dubius(0.76)A. cruentus(<0.50) andA. hypochondriacus(<0.50); Cr (mg kg−1):A. dubius(8.19)A. cruentus(1.15) andA. hypochondriacus(1.20). However, the concentration of Pb was high:A. dubius(19.04)A. cruentus(30.20) andA. hypochondriacus(35.56) more than the maximum of WHO (10 mg kg−1). To avoid systematic error, recovery and validation studies were performed: recovery test: 102.3%; validation (by standard addition): 96.0–103.1%. Due to the fact that amaranth had been proposed as new food due to its nutraceutical properties, the high concentration of Pb found in this study indicates that Pb should be evaluated in these amaranth species to avoid the intake of toxic element by human beings.

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Ng'ang'a, M. N., R. M. Muasya, E. Omami, and O. Ohiokpehai. "EFFECTS OF INTERCROPPING ON FRESH LEAF YIELD OF AMARANTH (A. DUBIUS) IN WESTERN KENYA." Acta Horticulturae, no. 806 (January 2009): 173–80. http://dx.doi.org/10.17660/actahortic.2009.806.20.

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Abdeta, Ayana Angassa, Mulugeta Gudisa Gudisa Gudisa, Aster Abebe Abebe, Kenea Feyisa Feyisa, and Alemayehu Mengistu Mengistu. "Effects of enclosure management and rangeland sites on chemical composition of herbaceous species in south central Ethiopia." Botswana Journal of Agriculture and Applied Sciences 14, no. 1 (April 3, 2020): 38–46. http://dx.doi.org/10.37106/bojaas.2020.19.

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This study was conducted in Adami-Tullu Jido-Kombolcha and Arsi Negelle districts, south central Ethiopia. The objectives of the study were to evaluate the interactive effects of grazing management systems and rangeland sites on dry-matter production and chemical composition of herbaceous plants in south central Ethiopia. Data were analyzed using GLM procedure in SPSS 16.0 version, which was used for mean comparisons using post-hoc t-test that can be employed to compare mean differences for enclosure and open-grazed areas. To test the effects of management systems and altitudinal variation on dry-matter production and chemical composition of herbaceous species, mixed model analysis was employed using sample site as a random variable while grazing management systems and altitude were fixed variables. A total of 28 herbaceous species were identified. Of the identified herbaceous species, 20 species were grasses, 2 species were legumes while 6 species were forbs. Among the recorded grass species, some were highly desirable, while others were in the categories of intermediate in terms of desirability and less desirable. We identified the dominant and common grass species that included: Arstida adscensionis, Cenchrus ciliarus, Chloris gayana, Chloris roxburghiana, Bothriochloa insculpta, Eragrostis papposa, Heteropogon contorus, Panicum maximum, Indigofer spinosa, Tephrosia pumila, Sporobolus pyrmidalis, Themeda triandra, B. nigropedata, Ocimum basilicum, Amaranthus dubis, Tribulos terrestris and Achyrantes aspera. The chemical composition of herbaceous plants were analyzed for DM, CP, NDF, ADF, ADL and Ash comparing two grazing management systems and three rangeland sites as patch mosaic units. The results of the present analysis showed that the average CP content in the open-grazed areas was significantly (P<0.05) higher than that of the enclosed areas. The upper and middle rangeland sites displayed significantly (P<0.05) higher CP content for the open-grazed areas than the enclosure management across the study areas. The present findings suggest that the DM, NDF, ADF, ADL and Ash contents of herbaceous species was significantly (P<0.05) lower in the open-grazed areas than in the enclosure management.

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Hoang, L. H., C. C. De Guzman, N. M. Cadiz, and D. H. Tran. "Physiological and phytochemical responses of red amaranth (Amaranthus tricolor L.) and green amaranth (Amaranthus dubius L.) to different salinity levels." LEGUME RESEARCH - AN INTERNATIONAL JOURNAL, of (April 8, 2019). http://dx.doi.org/10.18805/lr-470.

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TThe physiological and phytochemical responses of red amaranth (Amaranthus tricolor L.) and green amaranth (Amaranthus dubius L.) to different salinity levels were determined in two experiments conducted in Vietnam. Both experiments were performed in a net house involving pot experiments arranged in randomized complete block design (RCBD) with three replications. Two genotypes of amaranth were grown in garden soil, saline soil, 50% garden soil: 50% saline soil and 25, 50 and 100 mM NaCl. Salinization was imposed at 7, 14 and 21 days after transplanting. Results indicated that salt stress decreased growth parameters and biomass production in all treatments except for 25 mM NaCl. Na+ and Cl- content accumulated in both shoot and root, however, root had greater NaCl content than shoot. Total phenolics, total flavonoid content and antioxidant activity increased with increasing salinity levels from 25 mM to 50 mM NaCl; however, at 100 mM NaCl, all these parameters decreased. These results showed that red amaranth was more tolerant to salinity stress than green amaranth.

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Reyna Trujillo, Teresa, and Estela Carmona Jiménez. "Caracterización pluviométrica y distribución del Amaranthus en México." Investigaciones Geográficas 1, no. 29 (June 1, 1994). http://dx.doi.org/10.14350/rig.59030.

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El amaranto Amaranthus spp es un recurso vegetal de importancia alimentaria ya desde la época prehispánica. En las últimas décadas ha sido muy estudiado como un cultivo alternativo y potencial para aquellas áreas del país donde se practica la agricultura de temporal o de secano y cuya precipitación pluvial es la única fuente hídrica para mantenerlo. En el análisis que ahora se hace, se concluye que el cultivo de las principales especies productoras de semilla: A. hypochondriacus y A. cruentus deberá extenderse preferentemente en aquellas regiones que reciban entre 700 y 1 200 mm de precipitación concentrados principalmente en el verano; en tanto que las especies consumidas como verdura A. hybridus, A. retroflexus, A. dubius, entre otras, prosperarán mejor en lugares que reciban más de 1 300 mm de lluvia.

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Vaca-Vaca, Juan Carlos, Frenyiline Jara-Tejada, and Karina López-López. "Partial molecular characterization of begomoviruses isolated from weeds collected in tomato crops in the southeast of Valle del Cauca, Colombia." Revista Colombiana de Ciencias Hortícolas 14, no. 1 (January 1, 2020). http://dx.doi.org/10.17584/rcch.2020v14i1.10434.

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Weeds are usually considered as a source of new viruses but are often neglected during diversity studies. Previously eleven samples of weeds were collected along the edges of a tomato crop field located in four municipalities (Florida, Ginebra, Cerrito and Candelaria) in the Southeast of Valle del Cauca. These samples were positive for begomoviruses but their molecular characterization had not been done until now. For each sample, DNA fragments were cloned, sequenced and analyzed. Nucleotide sequence analysis of viral fragments showed the presence of six different begomoviruses: two virus isolated from Lantana camara, Desmodium sp. and Amaranthus dubius were previously described as potato yellow mosaic virus (PYMV) and passionfruit leaf distortion virus (PLDV), respectively; other four virus which were isolated from L. camara, A. dubius, Rivina humilis, Desmodium sp., Rhynchosia minima, Hybanthus attenuatus, Verbena sp., Croton hirtus and Caesalpinia sp., showed its highest nucleotide sequence identity (89%) with bean chlorotic mosaic virus (BChMV), datura leaf distortion virus (DaLDV) and rhynchosia golden mosaic Yucatan virus (RhGMYV). Cloned viruses fragments from these weeds could be new begomoviruses not previously reported before, this in accordance with the ICTV species demarcation criterion for the genus Begomovirus (≥91 % sequence identity). Mixed infections of begomoviruses in Desmodium sp. and A. dubius weeds also was found in this analysis. Finally, this paper reports by the first time to three alternative begomoviruses weeds hosts that infect tomato and passion fruit crops: A. dubius for PYMV, and L. camara and Desmodium sp. for PLDV, respectively.

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"Composition of Fatty Acids and Squalene Content of Wild Spinach (Amaranthus dubius Mart) Seed Oil." Makara Journal of Science 25, no. 2 (June 30, 2021). http://dx.doi.org/10.7454/mss.v25i2.1192.

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John J. Mellem. "Bioaccumulation of Cr, Hg, As, Pb, Cu and Ni with the ability for hyperaccumulation by Amaranthus dubius." AFRICAN JOURNAL OF AGRICULTURAL RESEEARCH 7, no. 4 (January 26, 2012). http://dx.doi.org/10.5897/ajar11.1486.

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Mbangi, Awonke, Pardon Muchaonyerwa, and Rebecca Zengeni. "Accumulation of multiple heavy metals in plants grown on soil treated with sewage sludge for more than 50 years presents health risks and an opportunity for phyto-remediation." Water SA 44, no. 4 October (October 31, 2018). http://dx.doi.org/10.4314/wsa.v44i4.06.

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Long-term application of sewage leads to heavy metal accumulation in soils, causing serious risks to plants, humans, animals and the environment, and phytoremediation could be essential. A study was conducted to determine the concentration of heavy metals in self-seeding vegetables, amaranthus (Amaranthus dubius), tomato (Solanum lycopersicum), black nightshade (Solanum nigrum), Rumex pulcher and turf grass, grown on land treated with sewage sludge for over 50 years. A pot experiment was conducted to determine phytoremediation potential of Indian mustard (Brassica juncea), lucern (Medicago sativa), vetch (Vicia sativa), rape (Brassica napus) and ryegrass (Lolium perenne), using the same soil. Another pot experiment was conducted to determine effects on tissue metal composition of Indian mustard of adding increasing concentrations of EDTA. All the self-seeding vegetables had tissue Zn, Cu, Cr, Ni, Cd and Pb concentrations higher than toxicity thresholds. Turf grass tissue had higher concentrations of all the metals than all the self-seeding vegetables growing on the soil. Indian mustard and rape had the highest biomass and tissue concentration of most of the metals studied. Addition of EDTA to the soil drastically increased uptake of Zn, Cu, Cd and Pb but not Cr and Ni. The findings of this study imply that self-seeding vegetables and turf grass growing on the polluted soils pose serious health risks and that Indian mustard, and to some extent rape, have potential for phytoremediation, especially if grown on the soil treated with EDTA.

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Chang, Ying Jun, Lian Yih Pong, Sharifah S. Hassan, and Wee Sim Choo. "Antiviral activity of betacyanins from red pitahaya (Hylocereus polyrhizus) and red spinach (Amaranthus dubius) against dengue virus type 2 (GenBank accession no. MH488959)." Access Microbiology 2, no. 1 (January 1, 2020). http://dx.doi.org/10.1099/acmi.0.000073.

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