水稻两用核不育系育性转换光温反应型的分类研究  

Classification of Fertility Response to Photoperiod and Temperature in Dual Purpose Genic Male Sterile Lines (Oryza sativa L.)

作　　者：程式华[1] 孙宗修[1] 斯华敏[1] 卓丽圣 

机构地区：[1]中国水稻研究所水稻生物学农业部部级重点实验室

出　　处：《中国农业科学》1996年第4期11-16,共6页Scientia Agricultura Sinica

基　　金：国家"863"计划资助项目;浙江省"8812"计划资助项目

摘　　要：在人工控制的９种光温处理下，对７６份水稻两用核不育系的育性转换光温反应进行了研究。根据自交结实率的光周期效应、温度效应和光温互作效应的分析，供试的两用核不育系中，占９６％的不育系的育性转换光温反应型可归为以下３种：（１）光周期敏感不育型，其统计学特征是育性转换的光温互作效应和光周期效应显著而温度效应不显著；（２）温度敏感不育型，其统计学特征是育性转换的温度效应显著而光周期效应不显著、光温互作效应显著或不显著；（３）光温互作不育型，其统计学特征是育性转换单独的光周期效应和温度效应不显著，仅光温互作效应显著。在供试的粳型不育系中，有３４．８％、１３．０％和４７．８％的材料分属上述３种光温反应型；在供试的籼型不育系中，有７３．６％和２２．６％的材料分属温敏型和光温互作型，没有一份材料为光敏型。结果表明现有的两用核不育系育性转换光温反应是多型性的。文中还对实用性籼型两用核不育系育性转换光温反应型的选择问题作了讨论。Fertility response to photoperiod and temperature in 76 dual purpose genic male sterile lines(Oryza sativa L.) was studied under 9 controlled combinations of photoperiods with temperatures. According to the variance analysis on seed setting data, 96% of the total male sterile lines studied can be grouped into four types as follows: (1)Photoperiod sensitive genic male sterility (PGMS), characterized by significant (P<0.05) photoperiod(P) effect and P×T interaction and non significant (P>0.05) temperature (T) effect, (2)Thermosensitive genic male sterility (TGMS), by significant T effect, non significant P effect, significant or non significant P×T interaction, and (3) Photo thermosensitive genic male sterility (P TGMS), by only significant P×T interaction. Among japonica lines studied, PGMS, TGMS and P TGMS account for 34.8%, 13.0% and 47.8%, respectively. Among indica lines, TGMS and P TGMS account for 73.6% and 22.6%, respectively and no PGMS was detected. The results indicate that the dual purpose genic male sterile lines are diversified on fertility response to photoperiod and temperature. Selection of fertility response to photoperiod and temperature available to produce two line system hybrid rice is discussed.

关 键 词：两用核不育系 光温反应型 育性转换 水稻 

分 类 号：S511.032[农业科学—作物学]