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Journal articles on the topic 'Swainsona formosa'

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Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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1

Jusaitis, Manfred. "Micropropagation of adult Swainsona formosa (Leguminosae: Papilionoideae: Galegeae)." In Vitro Cellular & Developmental Biology - Plant 33, no. 3 (July 1997): 213–20. http://dx.doi.org/10.1007/s11627-997-0025-7.

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2

Tapingkae, T., A. Taji, and P. Kristiansen. "Floral ontogeny of Swainsona formosa (Fabaceae: Faboideae: Galegeae)." Australian Journal of Botany 55, no. 6 (2007): 643. http://dx.doi.org/10.1071/bt06111.

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Swainsona formosa (G.Don) J.Thompson (Sturt’s desert pea) is used in commercial floriculture for cut flowers and ornamental pot plants; however, accurate identification of the growth stages is critically important in making management decisions in floricultural crops. This plant was investigated by stereomicroscopy and scanning electron microscopy (SEM) to identify flowering time and stages of floral development. This is the first work to describe the complete floral ontogeny in a member of tribe Galegeae. Conversion from vegetative to reproductive stages began within 40–46 days after seed germination for axillary branches and within 46–52 days for central stems. Plants required 807.5 days °C growing degree-days for axillary branches and 921.5 days °C for central stems to reach 50% flowering. The central stem grew more nodes (11.1 ± 0.97 nodes) before the initiation of the first flower than did the axillary branches (7.2 ± 0.93 nodes). The order of floral organ initiation within each whorl is unidirectional, except for the petal whorl, which is simultaneous; the flower is organised into five whorls and shows a pentamerous arrangement of sepals and petals, 10 stamens in two whorls and a central carpel.

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3

Jusaitis, Manfred. "Floral Development and Breeding System of Swainsona formosa (Leguminosae)." HortScience 29, no. 2 (February 1994): 117–19. http://dx.doi.org/10.21273/hortsci.29.2.117.

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Flowers of Swainsona formosa (G. Don) J. Thompson (syn. Clianthus formosus) developed through seven floral stages from buds to open flowers in 17 days. Floral stages were correlated with the sigmoidal growth pattern of the peduncle. Self-pollination was prevented in the species by the presence of a stigmatic cuticle that precluded pollen germination until ruptured, exposing the receptive surface below. Cuticular rupture occurred in nature during bird-pollination and was emulated manually by lightly rubbing a pollen-covered finger across the stigma. The species was self-compatible, and to ensure cross-fertilization when breeding, emasculation before anther dehiscence was essential.

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4

ZULKARNAIN. "Embryology of Swainsona formosa (Fabaceae): Anther and Ovule Development." HAYATI Journal of Biosciences 12, no. 1 (March 2005): 11–16. http://dx.doi.org/10.1016/s1978-3019(16)30317-5.

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5

Zulkarnain, Zulkarnain. "THE DETECTION OF THE TIME OF CONVERSION FROM VEGETATIVE TO REPRODUCTIVE GROWTH IN Swainsona formosa (FABACEAE)." Jurnal Agroecotania : Publikasi Nasional Ilmu Budidaya Pertanian 1, no. 1 (July 23, 2018): 1–10. http://dx.doi.org/10.22437/agroecotania.v1i1.5312.

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The induction of chromosome doubling using antimitotic chemical will only be effective when the substance is applied at vegetative growth phase, as it works only during mitotic division within cells of actively growing tissues. Therefore, this investigation was carried out to determine the precise conversion time from vegetative into reproductive growth stage, that in turn can be used as a reliable reference for the application of antimitotic chemicals in doubling the chromosome number in Swainsona formosa. The conversion from vegetative to reproductive growth in Swainsona formosa was successfully determined with particular emphasis on the effect of different photoperiods. Although photoperiod affected the time required for first flower initiation, the number of nodes before the plant entering the reproductive stage was not affected by photoperiod and presumed to be set genetically. It was found that under artificial photoperiods of 16, 12 and 8 hours the 12th and 11th nodes were the critical nodes for the main and side stems, respectively. Meanwhile the 10th and 8th nodes were found to be critical for main and side stems of plants grown under natural photoperiods ranging from 12 to 16 hours during their life cycle. Histological examination indicated that when the plants were grown under 12 – 16 hours photoperiods the first floral bud formation was initiated within 56 – 60 days after germination, thus this period was considered as the critical time for the conversion from vegetative to reproductive growth in S. formosa. Keywords: Sturt’s desert pea, legume, ornamental plant, plant breeding.

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6

Z, Zulkarnain. "Assessment of pollen viability and germination in Swainsona formosa (G.Don) J.Thompson." Biospecies 12, no. 1 (April 6, 2019): 49–54. http://dx.doi.org/10.22437/biospecies.v12i1.6596.

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The work presented here was aimed at investigating the proper time (after spreading) for viability assessment and the effect of various sucrose concentrations on pollen germination in Swainsona formosa. The rate of pollen tube formation was determined for freshly shed pollen grains of glasshouse-grown plants at 10, 15, 20, 25, 30, 60 and 120-minute intervals after being plated on Brewbaker and Kwack (BK) medium. The results indicated that within 60 minutes pollen germination reached 63.70%, after which remained steady at 120 minutes (63.71%). Under the effect of various concentrations of sucrose, i.e. 0.5, 10, 15, and 20% (w/v), the germination rate of pollen grains was assessed at 60 minutes following germination. The results showed that sucrose concentration of 10 – 15% (w/v) produced better germination rate (64.14%) compare to lower concentrations (19.64 and 43.58% at zero and 5% sucrose, respectively). Sucrose concentration above 15% was also found to inhibit pollen germination (48.92% at sucrose concentration of 20%).

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7

Tapingkae, T., P. Kristiansen, and A. Taji. "INFLUENCE OF CARBOHYDRATE SOURCE ON THE IN VITRO FLOWERING OF STURT'S DESERT PEA (SWAINSONA FORMOSA)." Acta Horticulturae, no. 829 (June 2009): 225–30. http://dx.doi.org/10.17660/actahortic.2009.829.32.

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8

ZULKARNAIN. "Pretreatment Stress Enhances Embryogenic Callus Production in Anther Culture of Sturt's Desert Pea ( Swainsona formosa )." HAYATI Journal of Biosciences 14, no. 1 (March 2007): 28–30. http://dx.doi.org/10.4308/hjb.14.1.28.

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9

Zulkarnain, Zulkarnain, Eliyanti Eliyanti, and Elly Indra Swari. "Pollen viability and stigma receptivity in Swainsona formosa (G.Don) J.Thompson (Fabaceae), an ornamental legume native to Australia." Ornamental Horticulture 25, no. 2 (June 7, 2019): 158–67. http://dx.doi.org/10.14295/oh.v25i2.2011.

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Pollen viability and stigma receptivity are prerequisites for successful cross-pollination and seed set in Swainsona formosa. In this study, the pollen viabilities and stigma receptivities was assayed by in vitro pollen germination and simple hand-pollination method on glasshouse-grown plants, respectively. The viability of pollen grains was tested under three different storage conditions: 1) pollen grains were left on the plant in the glasshouse under natural conditions, 2) pollen grains were harvested and kept at a low temperature (4 o C) in total darkness, and 3) pollen grains were kept in a dry freezer (-10 o C) and in total darkness. Meanwhile, stigma receptivity was determined by hand-pollination using fresh pollen grains on flower of glasshouse-grown plants at one day before anther dehiscence up to 8 days after anther dehiscence. The results showed that pollen grains could be stored at 4 o C for up to 28 days without significantly losing their viability. Pollen longevity could be extended beyond two months when stored at -10 o C and under dry conditions. These findings provided a simple and economically sound method for storage of S. formosa pollen. In addition, stigma receptivity was found to be receptive from one day before anther dehiscence and reached its peak within four days after anther dehiscence. These results provide a valuable background to the conventional breeding of this species to create hybrids through cross-pollination

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10

Hamid, M. M., and R. R. Williams. "Effect of different types and concentrations of plant growth retardants on Sturt's desert pea (Swainsona formosa)." Scientia Horticulturae 71, no. 1-2 (November 1997): 79–85. http://dx.doi.org/10.1016/s0304-4238(97)00107-6.

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11

Chikowe, Getmore Rumbudzai, Lindiwe Nomathemba Mpala, and Ian Edwin Cock. "Swainsona Formosa (G.Don) Joy Thomp. Solvent Extractions Inhibit the Growth of a Panel of Pathogenic Bacteria." Pharmacognosy Communications 7, no. 2 (May 15, 2017): 91–97. http://dx.doi.org/10.5530/pc.2017.2.13.

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12

Kawaguchi, M., and A. Taji. "ANATOMY AND PHYSIOLOGY OF GRAFT INCOMPATIBILITY IN STURT´S DESERT PEA (SWAINSONA FORMOSA), AN AUSTRALIAN NATIVE PLANT." Acta Horticulturae, no. 683 (June 2005): 249–58. http://dx.doi.org/10.17660/actahortic.2005.683.29.

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13

IKEDA, Takashi, Acram TAJI, Yukihiro FUJIME, and Masaki NOGUCHI. "Water Status and Growth of Callus in Sturt's Desert Pea (Swainsona formosa) as Affected by Media Condition." Environment Control in Biology 42, no. 3 (2004): 177–83. http://dx.doi.org/10.2525/ecb1963.42.177.

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14

Tapingkae, T., A. Taji, and P. Kristiansen. "FLOWERING OF STURT'S DESERT PEA (SWAINSONA FORMOSA) IS AFFECTED BY CHANGES IN GLUCOSE CONCENTRATION IN SHOOT APICES." Acta Horticulturae, no. 813 (March 2009): 599–604. http://dx.doi.org/10.17660/actahortic.2009.813.83.

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15

Jones, P. N., A. M. Taji, and M. J. Faint. "THE EFFECT OF NATRAKELP® (SEAWEED CONCENTRATE) AND CULTAR® (PACLOBUTRAZOL) ON THE VASE LIFE OF STURT'S DESERT PEA FLOWERS (SWAINSONA FORMOSA)." Acta Horticulturae, no. 454 (February 1998): 383–90. http://dx.doi.org/10.17660/actahortic.1998.454.46.

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16

"Swainsona formosa." CABI Compendium CABI Compendium (January 7, 2022). http://dx.doi.org/10.1079/cabicompendium.110326.

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17

Zulkarnain, ,. "The Production of Tetraploid Swainsona formosa by Colchicine Mutagenesis." Zuriat 15, no. 1 (September 14, 2015). http://dx.doi.org/10.24198/zuriat.v15i1.6879.

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Swainsona formosa, a legume native to Australia, is a spectacular flowering plant that is used as a hanging basket, container or cut flower plant. Its breeding programme had been emphasized on the production of better flower quality through ploidy modification to produce tetraploid plants. Colchicine, an antimitotic chemical, had been sucessfully used to induce tetraploidyzation in S. formosa. Up to 50% of plants with double chromosome number (2n = 4x = 32) were produced by seedling application of colchicine at 0.01%–0.1%. Concentrations below 0.01% or above 0.1% were found not effective in inducing chromosome doubling. Tetraploid S. formosa were charaterized by larger leaflets, bigger size but lower density of stomata, larger flowers with longer peduncles and larger pollen grains with lower viability. In general, colchicine can be used effectively to induce polyploidyzation in S. formosa and this method should find application in breeding programme.

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