XVI International Botanical Congess

We have shown, that crops (Glycine max L. Merr., Fagopyrum esculentum Moench., Oryza sativa L.) and their cultivars differed significantly in their response to application of such regulators as benzylaminopurine (BA), kinetin (K), phumare (Phum, dehydroamino acid derivative) and phurolane (Phur, dehydrophurane derivative) to generative organs. BA stimulated increase in biomass accumulation and mature pod number of buckwheat, whereas K and Phur influenced growth much more slightly. BA stimulated vegetative growth of the main stems, K and Phur increased development of reproductive organs. BA, Phum and Phur raised a pod set on main stems only in one out of four soybean cultivars studied. The photosynthetic rate of 6-7 internodes leaves was reduced slightly, assimilate distribution to stem with root increased. K and Phum have stimulated an increase of leaf and pod set on the main stems, but reduced on side branches. As a result, soybean grain productivity was not changed. Application of Phum to rice panicle on anthesis stimulated grain set.