【摘要】 通过农垦５８Ｓ光敏不育基因与安农Ｓ－１温敏不育基因重组，光敏不育基因能够在温敏不育基因系中充分表达，解决了光敏不育系选育中，光敏核不育株难获得和败育不彻底的问题。它是获得优良光敏不育系、早熟光敏不育系和各类型籼型光敏不育系十分有效的方法。光敏不育系之间存在着导致完全不育临界日长的差异。一般临界日长较短的光敏不育系比临界日长长的具有更低的导致完全不育的起点温度。更多还原

【Abstract】 By way of recombining the photo-sensitlve genic male sterile(PGMS) gene from Nongken 58S and the thermo-sensitive genic male sterille(TGMS) gene from Annong S-1,it is found that the PGMSgene can be more easily expressed in the background of TGMS lines,so the frequency of PGMS plants in-creases greatly and abundant PGMS plants with various characteristics can be found in the fillial generationsand the sterility of such PGMS plants is complete and stable. Therefore,the recombination of PGMS andTGMS genes can not only solve the problems of incomplete sterility of present PGMS lines,but it is a veryaffective way to develop various types of elite PGMS lines including early-maturing and indica ones.Futher-more,it is found that there exists difference in critical daylength inducing sterility among PGMS lines. Gen-erally speaking, PGMS lines with shorter critical sterile daylength have lower critical temperature.更多还原