籼稻新质源光(温)敏核不育两用系的育性转换特性  

Fertility Alternation Characteristics of Photo thermo sensitivity Genic Male Sterile (CQPGMS) Lines with New Cytoplasm in lndica Rice

作　　者：雷开荣[1] 

机构地区：[1]重庆市农业科学研究所

出　　处：《西南农业学报》1997年第4期11-15,共5页Southwest China Journal of Agricultural Sciences

基　　金：重庆市青年科学基金

摘　　要：在籼型水稻渝８３－１Ａ－４／ＩＲ８Ｆ３中发现光（温）敏核不育新材料—ＣＱＰＧＭＳ，经连续定向选择，选育出１０１Ｓ、３００１Ｓ、７６４６Ｓ三个核不育两用系。它们的不育临界起点温度低（＜２４℃），在重庆气候条件下有４０天以上的稳定的全不育期，制种安全可靠。３００１Ｓ、１０１Ｓ有较好的光敏性，９月初转为可育，在９月上、中旬不出现连续阴雨的条件下，三个不育系均易于繁殖。Three genic male sterile dual purpose lines,101S,3001S and 7646S derived from CQPGMS——a male sterile plant of a F 3 progeny of the cross Yu85 1A 4/IR8,are newly developed indica PTGMS lines with lower critical temperature(24℃). Their sterility is very stable during sterile stage(over 40 days)in Chongqing.It is safe to produce hybrid seeds under long day length condition in summer.In early September,these lines become fertile.three GMS lines can be multiplied easily and the selfed seed setting percentage are higher than 30% unless it rains continually from September 5 to 20.

关 键 词：籼稻 核不育两用系 育性转换 

分 类 号：S511.210.3[农业科学—作物学]