面向高产高效杂交水稻制种的育种策略与应用OA

The successful application of hybrid rice has contributed significantly to ensuring China's food security,with efficient seed production technology being crucial for its large-scale promotion.This paper systematically reviews the development process of hybrid rice seed production technology in China,from the initial exploration and improvement stages to the current phase of maturity and high yield,with a focus on breeding strategies for achieving high-yield and high-efficiency seed production.It summarizes research advances in key technologies such as improving the stigma excretion rate and vitality of the female parent,precisely synchronizing the flowering time of parental lines,and enhancing parental heat tolerance to increase outcrossing seed set rates.The paper also analyzes novel seed purification and production technologies,including leaf and hull color markers,herbicide-resistant techniques,and mechanized mixed planting and harvesting,which have significantly improved seed purity,production efficiency,and reduced labor costs.Finally,the paper prospects future development directions for hybrid rice seed production,pointing out that creating new parental lines suitable for whole-process mechanization and utilizing apomixis to fix heterosis will be fundamental paths toward achieving sustainable development in hybrid rice production.