Bibliografie tematiche / Barley Preharvest sprouting

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Letteratura scientifica selezionata sul tema "Barley Preharvest sprouting"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 13 febbraio 2022

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Articoli di riviste sul tema "Barley Preharvest sprouting"

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Rodríguez, M. Verónica, Martín Margineda, Juan F. González-Martín, Pedro Insausti e Roberto L. Benech-Arnold. "Predicting Preharvest Sprouting Susceptibility in Barley". Agronomy Journal 93, n. 5 (settembre 2001): 1071–79. http://dx.doi.org/10.2134/agronj2001.9351071x.

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Ullrich, S. E., H. Lee, J. A. Clancy, I. A. del Blanco, V. A. Jitkov, A. Kleinhofs, F. Han, D. Prada, I. Romagosa e J. L. Molina-Cano. "Genetic relationships between preharvest sprouting and dormancy in barley". Euphytica 168, n. 3 (15 aprile 2009): 331–45. http://dx.doi.org/10.1007/s10681-009-9936-1.

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Himi, Eiko, e Shin Taketa. "Barley Ant17, encoding flavanone 3-hydroxylase (F3H), is a promising target locus for attaining anthocyanin/proanthocyanidin-free plants without pleiotropic reduction of grain dormancy". Genome 58, n. 1 (gennaio 2015): 43–53. http://dx.doi.org/10.1139/gen-2014-0189.

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Abstract (sommario):
Preharvest sprouting is a serious problem in grain crop production because it causes quality deterioration and economic losses. It is well known that grain colour is closely associated with grain dormancy in wheat; white-grained lines without accumulating proanthocyanidins in testa tend to be more susceptible to preharvest sprouting than red ones. All available white-grained wheat lines are restricted to triple recessive mutations at the R loci (R-A1, R-B1, and R-D1), but barley is known to have 11 independent loci conferring the proanthocyanidin-free grain phenotype. In this study, we evaluated the dormancy levels of anthocyanin/proanthocyanidin-free ant17 mutants. Three ant17 mutants showed the same levels of dormancy as their respective wild types. Sequencing of three independent ant17 alleles detected a point mutation within the coding regions of flavanone-3-hydroxylase (F3H), which are predicted to cause a premature stop codon at different sites. The F3H locus completely cosegregated with the Ant17 position on the chromosome arm 2HL. Expression of the barley F3H gene was observed in pigmented tissues, but not in nonpigmented roots and stems. This result indicates that wheat F3H may be a promising new target locus for breeding white-grained lines with a practical level of preharvest sprouting resistance.
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Henson, Cynthia A., Stanley H. Duke, Paul Schwarz e Rich Horsley. "Barley Seed Osmolyte Concentration as an Indicator of Preharvest Sprouting". Journal of the American Society of Brewing Chemists 65, n. 3 (giugno 2007): 125–28. http://dx.doi.org/10.1094/asbcj-2007-0527-01.

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Lin, R., R. D. Horsley e P. B. Schwarz. "Methods to Determine Dormancy and Preharvest Sprouting Resistance in Barley". Crop Science 49, n. 3 (maggio 2009): 831–40. http://dx.doi.org/10.2135/cropsci2007.11.0652.

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Ullrich, Steven E., Janet A. Clancy, Isabel A. del Blanco, Hyejin Lee, Vadim A. Jitkov, Feng Han, Andris Kleinhofs e Kunihiko Matsui. "Genetic analysis of preharvest sprouting in a six-row barley cross". Molecular Breeding 21, n. 2 (3 agosto 2007): 249–59. http://dx.doi.org/10.1007/s11032-007-9125-7.

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ZHAO, Tao, Yinghua LIU, Guangbing DENG, Hong YANG, Zhifen PAN, Hai LONG e Maoqun YU. "Assessment of Methods Used in Testing Preharvest Sprouting Resistance in Hulless Barley*". Chinese Journal of Appplied Environmental Biology 2009, n. 3 (5 marzo 2010): 380–84. http://dx.doi.org/10.3724/sp.j.1145.2009.00380.

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Schwarz, Paul, Rich Horsley e Heather McNamara. "Preharvest Sprouting in the 2002 Midwestern Barley Crop: Occurrence and Assessment of Methodology". Journal of the American Society of Brewing Chemists 62, n. 4 (settembre 2004): 147–54. http://dx.doi.org/10.1094/asbcj-62-0147.

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Edney, M. J., W. G. Legge, M. S. Izydorczyk, T. Demeke e B. G. Rossnagel. "Identification of Barley Breeding Lines Combining Preharvest Sprouting Resistance with “Canadian-type” Malting Quality". Crop Science 53, n. 4 (luglio 2013): 1447–54. http://dx.doi.org/10.2135/cropsci2012.11.0649.

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Nagel, Manuela, Ahmad M. Alqudah, Marlène Bailly, Loïc Rajjou, Sibylle Pistrick, Gabriele Matzig, Andreas Börner e Ilse Kranner. "Novel loci and a role for nitric oxide for seed dormancy and preharvest sprouting in barley". Plant, Cell & Environment 42, n. 4 (16 gennaio 2019): 1318–27. http://dx.doi.org/10.1111/pce.13483.

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Tesi sul tema "Barley Preharvest sprouting"

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Liu, Lingwei. "The role of gibberellin and abscisic acid in regulating preharvest sprouting in barley (Hordeum vulgare L.)". 2013. http://hdl.handle.net/1993/18313.

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Abstract (sommario):
Preharvest sprouting (PHS), the germination of seeds on the maternal plant before harvest, is a big challenge for barley producers worldwide. It is attributed mainly to low seed dormancy. The balance between two classical plant hormones, gibberellin (GA) and abscisic acid (ABA) regulates seed dormancy and germination, and the endogenous level of these two hormones in plants is determined by their biosynthesis and catabolism. This thesis characterized the expression patterns of the major GA and ABA metabolism genes in barley cv. Betzes during seed development, and germination in both dormant and non-dormant seeds. The results indicate that specific gene family members of the two hormones play distinct temporal roles in regulating seed development, dormancy onset and release, and germination. Since only two genes encoding the GA deactivating GA 2-oxidase enzyme have been known so far in barley, this study also identified two new GA2ox genes designated as HvGA2ox1 and HvGA2ox3.
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Evans, Nicole Paula. "A study of the effectiveness of homoeopathically prepared dilutions of abscisic acid, molybdenum and allopurinol in inhibiting or promoting the germination of barley seeds (Hordeum vulgare)". Thesis, 2008. http://hdl.handle.net/10321/536.

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Dissertation submitted in partial compliance with the requirements for a Masters Degree in Technology: Homoeopathy, Durban University of Technology, 2008.
Introduction This study investigated the effectiveness of homoeopathic dilutions of abscisic acid (ABA), molybdenum and allopurinol on inhibiting or promoting the germination of barley seeds (Hordeum vulgare cv. Stirling, ex Caledon, Western Cape, South Africa, 1998 harvest). Recent research involving ABA and seed germination has shown mixed results, with Bruni (2001), finding there to be statistically significant biological effects, but Couchman (2001) not. Objective/Aim/Purpose The purpose of this study was to evaluate the effectiveness of homoeopathic dilutions of ABA, molybdenum and allopurinol (two substances which have an effect on ABA metabolism), especially those above the 10-23 level (Avogadro’s dilution limit), on germination, in light of recent findings. Abscisic acid, a plant hormone and molybdenum, a trace element, both play an essential role in inducing dormancy of the seed. Allopurinol, a therapeutic drug, has also been shown to affect ABA metabolism and therefore seed germination. The study used all three substances individually and in combination, in homoeopathic dilutions ranging from 4CH to 200CH potency. Methodology There were 7 treatments with 5 potencies per treatment (4CH, 9CH, 15CH, 30CH and 200CH). Each potency level for each treatment had a control, which meant there were 5 controls per treatment. The seeds (distally cut) were placed in 9cm Petri dishes (20 seeds in each), with 5 repetitions, 100 seeds per dilution level with one control of 20 seeds. There were thus 600 (120 x 5) seeds per treatment and 4200 seeds in total (600 x 7 treatments). Seeds were germinated in the dark at a constant temperature. Counts were done every 24 hours for 3 days and the data recorded. The criterion for germination was radical emergence. Results The data was analysed statistically using Univariate Analysis of Variance (STATISTICA version 6). The results showed statistically significant interaction between treatments and potencies and a One-Way Anova was then used to analyse each treatment to determine the effectiveness of each potency. Statistically significant differences were noted between potencies for each treatment. From the results it was clear that the most effective treatment for stimulating germination was the treatment utilizing homoeopathic dilutions of allopurinol. The most effective treatment for inhibiting germination was the treatment utilizing ABA in homoeopathic dilutions. The 30CH (10-60) showed a statistically significant effect on the stimulation of germination across almost all treatments, whereas the 15CH (10-30) showed a statistically significant effect in inhibiting germination in most treatments. Conclusion It is evident from the results of this study that all the treatments produced distinct biological effects, whether it be stimulating germination or inhibiting germination in homoeopathic dilution.
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Kleingeld, Gerhard. "A comparison between the efficacy of radionically prepared gibberellic acid and homoeopathically prepared gibberellic acid (GHP) on the germination rate and seedling development of barley seeds". Thesis, 2016. http://hdl.handle.net/10321/1508.

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Abstract (sommario):
Submitted in partial compliance with the requirements of the Master’s Degree in Technology: Homoeopathy, Durban University of Technology, Durban, South Africa, 2016.
Aim The aim of this controlled, experimental study was to compare the biological activity of various homoeopathic potencies of gibberellic acid manufactured radionically (AMS transfer device) and conventionally (GHP) in terms of their respective influence on germination rate and seedling development of barley seeds; all the respective results being contrasted against those produced by the distilled water control. Methodology The research was completed by employing quantitative research techniques and followed true experimental design. Homoeopathically (Hahnemannian) prepared gibberellic acid followed the manufacturing guidelines of method 5a involving liquid preparations, as specified in the German Homoeopathic pharmacopoeia (GHP) (Benyunes 2005). A second radionic ‘equivalent’ version of each of the Hahnemannian potencies was manufactured using the ‘AMS wave transfer’ device. Four sources of data were collected namely, germination count and rate, seedling development (root length), seedling dry mass, and number of seeds with measurable roots. All the data was collected and documented on a data collection sheet using Microsoft Excel. All the data was statistically analysed and subjected to analysis of variance (ANOVA) using GenStat Version 14 (VSN International, UK) at the 5% level of significance. The statistical data was used to produce a comparison between the different remedies and distilled water. Results All of the remedy treatment groups (Radionic 200c, Hahnemannian 200cH, Radionic 4c and Hahnemannian 4cH) displayed suppressive effects (to certain extents respectively ) on seed growth and development in comparison to the control group (distilled water). The control group displayed greater seedling development in comparison to all remedy treatment groups which was most evident in the average root lengths and high vigour seed lot root lengths having longer roots than all remedy treatment groups. The control group also displayed a higher number of seeds with measurable roots compared to all the remedy treatment groups in both total number of seeds and in the seeds accounted for in the high vigour lots. This suggests that all Homoeopathic remedies irrespective of potency or manufacture method (Radionic or Hahnemmanian) had similar suppressive effects on root growth and seedling development and this suppressive effect was in turn not evident in the control group. Conclusion The experiment results suggest that radionically manufactured homoeopathic remedies (AMS wave transfer device) have similar biological effects (suppressive effects) to the equivalent Hahnemannian manufactured homoeopathic remedies, although further research in this field is necessary to confirm these findings the results from this study are supportive of the use of radionically prepared remedies in homoeopathic practice.
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Tessier, Angela B. M. "The relation between preharvest sprouting and embryonic sugar levels in two-rowed malting barleys". 1991. http://hdl.handle.net/1993/17415.

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