油菜素内酯在作物上的应用及生理效应与评价

THE APPLICATION AND PHYSTOLOGICAL EFFECT OF BRASSINOLIDE IN CROPS AND THEIR ARPRAISAL

The studies on application and physiological effects of brassinolide in 9 species of crops, that have been done by the authors since 1984, have been introduced comprehensively in this article. The main results are shown as follows : BR as one yield stimulant, which has an effect of increasing about 6-9% of cereal yields. However, the effect is unstable. BR as a plant growth regulator, which can promote growth in the majority crop seedlings, can increase the tolerance of crops to chilly, raise the rate of co_2 assimilation in leaves, regulate the transport and distribution of photosynthesis products and balance of endogenous hormones. BR can stimulate the germination of pollen and elongation of pollen tube, and lift the affinity of pollination of hybridization, promote the fruitage and grain filling in inferior glume flower. Apart from these, BR also has some other special or good influnces on tissue culture in cotton, rape, citrus and so on.