Phytohormones and structure of cells of Acer saccharinum seed embryo
1995
Musatenko, L.I. | Berestetsky, V.A. | Vedenicheva, N.P. | Generalova, V.N. | Martyn, G.I. | Sytnik, K.M. (Academy of Sciences, Kiev (Ukraine). N.G. Kholodny Inst. of Botany)
Endogenous phytohormone levels and cell structure of Acer saccharinum embryos were studied during seed development. Mature seeds had high water content (50 %) and were able to germinate immediately after fruit abscission. The submicroscopic cell structure was similar to the structure of functionally active cells. Free and conjugated indole-3-acetic acid (IAA), abscisic acid (ABA), zeatin riboside and dihydrozeatin content and gibberellin-like substances (GLS) activity were determined during embryo maturation. Decrease in ABA, free IAA and cytokinin levels was observed at the end of maturation. Mature seeds contained considerable amounts of conjugated IAA and had high GLS activity.
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