【摘要】 在⁶⁰Coγ射线引变蓖麻品系永283M₂中,发现具有标志性状的单性雌株,即标志雌性系（简称标雌系）。试验结果显示:测交F₁全部为正常株;测交F₁自交,正常株与标雌株的比例为3:1;测交F₁与标雌株回交,B₁正常株与标雄株的比例为1:1,没有发现具有标志性状又有雄花发育的植株。根据这种分离特点结合分离规律及联锁遗传规律分析:标志雌性系的雌性和标志性状是受二对联锁的隐性基因（ppll）控制的;正常株的具雄花和无标志性状是受二对联锁的显性基因（PPLL）控制的。更多还原

【Abstract】 The castor line "Yong 283 M2" , inducing by 60Co γ ,was a female plant, which had marked character .The experiment result showed marked plants×nomal plants,their F1 were nomal plants; If F1 self-cross, the ratio of nomal plants and marked female line was 3 : 1; If F1 backcross with marked female line, the ratio of nomal plants and marked female line was 1:1 .In all experiment were not found plants with male flowers.According to above result we consider that female and marked characters of marked female line were controlled by two pairs of recessive genes ( pp11 ) ,nomal with male flowers plants and without marked characters were controlled by two pairs of dominant genes ( pp11 ) .更多还原