水稻籼粳指数鉴定方法及亚种间杂交的分子辅助育种  

The Indica-Japonica Index Identification Methods and Marker-assisted Breeding of Inter-subspecific Hybridization in Rice

作　　者：季文杰 李阳生[1] JI Wen-jie;LI Yang-sheng(Wuhan University/National State Key Laboratory of Hybrid Rice,Wuhan 430072,China)

机构地区：[1]武汉大学/杂交水稻国家重点实验室,武汉430072

出　　处：《湖北农业科学》2018年第24期41-45,共5页Hubei Agricultural Sciences

摘　　要：籼粳交F1株高、生育期超亲、结实率低、子粒充实度差是长期困扰水稻(Oryza sativa L.)亚种间杂交育种的几大难题。通过对水稻籼粳指数鉴定方法的发展、遗传距离与杂种优势关系的研究进行总结,并结合株高、抽穗期、育性基因及库源关系等方面的研究进展,讨论分子标记方法在水稻育种工作中的应用前景,以期为水稻籼粳亚种间杂种优势利用提供一定的参考价值。Tall culm,long growth period,low seed setting rate and bad grain filling are the main problems of indica-japonica inter-subspecific hybrid F1 progeny in rice.This article reviewed the advances of indica-japonica index identification technologies,the relationship between parents’genetic distance and F1 heterosis,and the progress in research on plant hight,heading date,fertility genes,and source-sink relationship,to investigate the prospect of molecular markers in rice breeding,hoping to provide some references for the utilization of inter-subspecific heterosis.

关 键 词：水稻(Oryza SATIVA L.) 亚种间杂交 籼粳指数 遗传距离(GD) 分子标记辅助选择(MAS) 

分 类 号：S512[农业科学—作物学]