| Autor: |
van den Ende, G., Croes, A. F., Kemp, Anke, Barendse, G. W. M. |
| Předmět: |
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| Zdroj: |
Physiologia Plantarum; May84, Vol. 61 Issue 1, p114-118, 5p |
| Abstrakt: |
The in vitro development of flower buds was studied on tissue explants of epidermis and subepidermal cortex from the flower stalks of Nicotiana tabacum L. cv. Samsun. The number of flower buds formed depended mainly on cytokinin concentration. Auxin acted as a modifier in a complex way. In early development, NAA at 1 μM decreased the number of buds initiated and delayed bud emergence. At a later stage, auxin promoted bud outgrowth at the same concentration. Optimal results were obtained when explants were first incubated at low auxin concentration for 3-5 days and subsequently transferred to an elevated auxin level. Physiological processes that lead to flower bud initiation start very soon after the onset of incubation. This was inferred from experiments whereby explants were first cultured at an inductive cytokinin concentration and then transferred to a non-inductive hormone level. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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