水稻同核异质不育系主要农艺性状分析

以同核异质不育系K型贵香1A、WA型贵香1A、DA型贵香1A、D型贵香1A、G型贵香1A、ID型贵香1A及其相应的保持系贵香1B为材料,在贵阳花溪进行了主要农艺性状的比较研究。结果表明:不育系之间的叶龄数差别不大,但都大于保持系;6个同核异质雄性不育系的分蘖力从高到低依次为WA型贵香1A、DA型贵香1A、D型贵香1A、K型贵香1A、G型贵香1A、ID型贵香1A;不育系的午前花率从高到低依次为K型贵香1A、WA型贵香1A、D型贵香1A、ID型贵香1A、G型贵香1A、DA型贵香1A;不育系的柱头外露率均高于保持系;保持系的始穗期、抽穗期、齐穗期也早于各不育系。

Analysis of main agronomic characters of isonucleus-allocytoplasmic CMS lines in rice

The results from studying main agromonic characters of isonucleus-allocytoplasmic CMS lines(K guixiang1A,WA guixiang1A,DA guixiang1A,D guixiang1A,G guixiang 1A and ID guixiang 1A) and the related maintain line(Guixiang 1B) showed that there was no obvious difference in leaf age between CMS lines,but the leaf age of 6 CMS lines was higher than that of the maintain line.The tillering ability of 6 CMS lines was WA guixiang1A >D Aguixiang1A>D guixiang1A >K guixiang1A>G guixiang1A>ID guixiang1A.The flowering rate of 6 CMS lines before noon was Kguixiang1A >WAguixiang1A> Dguixiang1A >IDguixiang1A>Gguixiang1A >DA guixiang1A.The stigma exsertion rate of 6 CMS lines was higher than that of the maintain line and the initial heading,heading and full heading stage of the maintain line was earlier than that of 6 CMS lines.