Topic
Kinetin
About: Kinetin is a research topic. Over the lifetime, 7856 publications have been published within this topic receiving 135550 citations. The topic is also known as: Kinetin.
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TL;DR: In experiments with Begonia leaves, a decisive effect of auxin and kinetin on regeneration is observed and it could be shown that gibberellin profoundly affects the complex hormone system apparently controlling differentiation in higher plants.
Abstract: IN previous years much attention has been paid to the influence of growth regulators on regeneration processes, especially to the interactions of kinetin and auxin in morphogenesis of tissue cultures1. In experiments with Begonia leaves we have observed a decisive effect of auxin and kinetin on regeneration. In addition it could be shown that gibberellin profoundly affects the complex hormone system apparently controlling differentiation in higher plants.
63 citations
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TL;DR: Indole-3-acetic acid, kinetin and Gibberellic acid treatments have been applied at the early tillering stage to two rice cultivars that contrast for tiller number and the responses of the hormones were studied.
Abstract: Tiller number can contribute significantly to yield potential of rice, but little knowledge is available on hormonal regulation of tillering and tiller dynamics. In the present study, Indole-3-acetic acid (IAA), kinetin (6-furfuryl amino purine) and Gibberellic acid (GA3) treatments have been applied at the early tillering stage to two rice cultivars that contrast for tiller number. The responses of the hormones were studied on growth, development, grain yield, senescence patterns, assimilate concentration of the panicle and ethylene production in different classes of tillers. The leaf area, panicle grain number, fertility percentage and grain yield of tillers were higher in the low-tillering cultivar than that of high-tillering cultivar; the treatment of kinetin was more effective in the latter than in the former. High ethylene production was responsible for reduction of growth duration and grain yield of the tillers. Kinetin application reduced ethylene production of the late-tillers significantly for the benefit of grain yield.
63 citations
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TL;DR: Induction of single and multiple shoots was obtained from nodal expiants of 60–80 year-old elite trees of rosewood on Murashige and Skoog's basal medium supplemented with 6-benzylaminopurine and kinetin to obtain complete plantlets.
Abstract: Induction of single and multiple shoots was obtained from nodal expiants of 60-80 year-old elite trees of rosewood on Murashige and Skoog's basal medium supplemented with 6-benzylaminopurine (1.0 mg 1(-1)) and δ -Naphthalene acetic acid (0.05 mg 1(-1)) or indole acetic acid (0.5 mg 1(-1)). Multiplication of shoots was obtained on MS (reduced major elements) or Woody Plant Medium supplemented with 6-benzylaminopurine (1.0 mg 1(-1)) and kinetin (0.5-1.0 mg 1(-1)). Excised shoots were rooted on half-strength MS with IBA (2.0 mg 1(-1)) to obtain complete plantlets. The regenerated plantlets have been acclimatized and successfully transferred to the soil.
62 citations
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TL;DR: The effect of major nutrients on growth and alkaloid production by plant cell culture of Holarrhena antidysenterica was studied with a view to increasing the yield of the alkaloids conessine, a therapeutic drug used for treatment of dysentery and helminthic disorders.
Abstract: The effect of major nutrients on growth and alkaloid production by plant cell culture of Holarrhena antidysenterica was studied with a view to increasing the yield of the alkaloid conessine, a therapeutic drug used for treatment of dysentery and helminthic disorders. The studies resulted in development of a modified Murashige and Skoog (MS) medium that contained 60 mM total nitrogen with a NH(4) (+)-to-NO(3) (-) ratio of 5:1, 0.25 mM phosphate, and 40 g/L sucrose. The growth regulators 2,4-dichlorophenoxy acetic acid (2,4-D) and kinetin (Kn) were also found to affect the synthesis of alkaloid. Using an optimal level of inoculum (3 g/L), the modified medium resulted in alkaloid synthesis of 0.66 g/100 g dry cell weight, which represented a 4.25-fold increase over that obtained in standard MS medium.
62 citations
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TL;DR: Arabinogalactan-proteins from carrot seeds and AGPs bound by the monoclonal antibody ZUM 18 increased the number of PEMs in a culture, showing that the activity of AGPs is not species specific.
Abstract: A method is described for the production of somatic embryos of Cyclamen persicum Mill in liquid medium Five steps are involved ; initiation of embryogenic cell lines, proliferation of pro-embryogenic masses (PEMs) on auxin-containing medium, development of somatic embryos on hormone-free medium with high osmolarity, germination and subsequent plantlet formation Cell lines were initiated by culturing the explant, the seedling tuber, directly in liquid medium Three parameters were important for obtaining embryogenic cell lines ; explant density, hormone concentrations and subculture regime The rate of uptake of the hormones 2,4-dichlorophenoxyacetic acid (2,4-D) and kinetin influenced the formation of PEMs Highly embryogenic cell lines were obtained only when PEMs had formed within 5-7 weeks PEMs were proliferated for at least 24 months and could be isolated from each subculture for the production of somatic embryos A high sucrose content (175 mM) in the development medium without hormones ensured efficient embryo development from PEMs A subsequent subculture in low sucrose concentration (58 mM) induced the formation of a tuber, thus promoting germination Arabinogalactan-proteins (AGPs) from carrot seeds and AGPs bound by the monoclonal antibody ZUM 18 increased the number of PEMs in a culture, showing that the activity of AGPs is not species specific
62 citations