摘要
以陆地棉（Ｃ．ｈｉｒｓｕｔｕｍ）为母本，野生种辣根棉（Ｃ．ａｒｍｏｕｒｉａｎｕｍ）做父本杂交，对杂种一代的部分形态性状遗传、花粉粒的育性、成熟胚囊、自然授粉和用陆地棉回交后结实率进行了比较研究。结果表明，三倍体（陆地棉×辣根棉）Ｆ１的形态性状居双亲的中间类型占观察性状的４０．９％，偏父性状占３１．８％，偏母性状占２２．８％。绝大多数花粉无生活力，仅０．４％有弱的生活力。在开花前一天的成熟胚囊中，异常胚囊占观察胚珠的９１．２％，正常胚囊占８．８％。杂种一代自然授粉或用陆地棉回交可获得极少量种子，从而证明三倍体（陆地棉×辣根棉）Ｆ、少数胚囊发育比较正常和具极少数可育花粉。
The inheritance of morphological characters,sterility of pollens, ripening embryosac,and seed setting from open pollination and backcross of triploid F1 hybrid between G. hir-sutum × G,armourianum were studied.It was found that some important morphological char-acters of F1 plants had the similiar phenotypes to their parental species,G.armourianum andG. hirsutum accounting for 31.8%and 22.8%of the traits studied,respectively and other40.9%of traits were middle. The most pollen grains had no living ability and a few pollen hadlower living ability. The abortion and normal embryo sacs on the day prior to flowering were9l.2%,8.8%,respectively. A few seeds were produced in F1 plants by opencross and back-cross with G. hirsutum as the pollen parent.
出处
《棉花学报》
CSCD
北大核心
1994年第3期131-134,共4页
Cotton Science
关键词
陆地棉
辣根棉
种间杂种
形态性状
花粉育性
成熟胚囊
Gossypium hirsutum,G.armourianum,interspecific hybrid, morphological charac-ter,pollen sterility,ripening sac
