Research Progress in the Causes,Mechanisms,and Regulation of Pre-Harvest Sprouting in Hybrid Rice
Pre-harvest sprouting is a noticeable problem influencing rice production in southern China,and the losses caused by this problem in hybrid rice have aroused increasing concern.This article summarizes the causes and mechanisms of pre-harvest sprouting in hybrid rice from seed glume cracking,seed dormancy,hydrolytic enzymes,plant hormones,genetic characteristics of cultivars,seed moisture content,external temperature,and oxygen conditions.Furthermore,this article proposes measures such as breeding cultivars resistant to pre-harvest sprouting,sowing on appropriate dates,strengthening field management,applying"920"(gibberellic acid)and pre-harvest sprouting inhibitors,and enhancing seed production management,aiming to provide reference for controlling pre-harvest sprouting in hybrid rice.
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