hybrid seedling
2.The change of phenylalanine ammonialyase (PAL), peroxidase (POX), su-peroxide dismutase ( SOD ) , glutathione ( GSH ) , ascobic acid ( ASA ) , malondialdehyde (MDA), relative permeability of plasma membrane, fatty acid composition (mol%), Chl content of leaves in hybrid rice seedling (two indica hybrid rice combination-S63 and V6 to Xan-thomonas campestris PV. oryzae insensitive and resistance respectively) were investigated under inoculation with Xanthamonas campestris PV. oryzae.
3.So in order to get good response for hybrid early rice, potassium fertilizer should be applied at early stage, attention should also be paid to middle stage; for hybrid late rice, K supply in seedling stage and tillering stage should be paid more attention, at middle-late stage certain amount of K should be supplied according to K nutrition.
8.This paper introduces the characteristics of Ce 253 and BoA,that are parents of the new combination hybrid rice the late rice Boyou 253,and summarizes the key techniques of choosing the suitable seed production field and the stage of flowering,planning rationally the sowing interval of the parents,culturing the strong tillering seedling,suitable density,culturing the double high-yielding population,predicting and regulating the stage of flowering and appropriate time of spraging GA.
