棉花光A不育系的遗传鉴定及利用研究  

GENETIC IDENTIFICATION AND UTILIZATION OF GUANG A A MALE STERILE LINE OF COTTON

作　　者：张相琼[1] 张东铭[1] 周宏俊[1] 王均明[1] 牟方生[1] 

机构地区：[1]四川省农科院棉花研究所

出　　处：《西南农业大学学报（自然科学版）》1999年第2期144-148,共5页Journal of Southwest Agricultural University

摘　　要：对墨西哥半野生棉转育后代中的显性无短绒具长绒和隐性核不育光Ａ材料进行遗传鉴定表明，光Ａ不育性受ｍｓｃ１基因控制。控制光籽特性基因与显性光籽Ｎ１为非等位基因。光Ａ光籽纯合态为低衣分，杂合态为高衣分。在遗传背景相同下，光籽组合产量优于毛籽组合。但因光Ａ纯合态的低衣分，其亲本繁殖和杂交制种时皮棉产量降低，故光Ａ不育系在杂种优势中的利用有优势又有劣势。Guang A, a recessive genetic male sterile line with dominant fuzzless-ness selected from transferred progenies of Gossypium hirsutum var. mexicanum, was used for genetic identification. Its sterility was found to be controlled by msc 1 and the gene responsible for its naked-seeded-ness appeared to be non-allelic to N 1. Guang A had high lint percentage when it was homozygous for naked-seededness and low lint percentage when it was heterozygous for naked-seededness. With similar genetic background, lint yield in combinations of the naked-seeded genotype was higher than that in combinations with the hairy-seeded genotype. However, Guang A has disadvantages as well as advantages in the utilization of heterosis because of its low lint percentage in parent propagation and hybrid seed production.

关 键 词：棉花 隐性核雄性不育 遗传鉴定 利用 光A不育系 杂种优势利用 

分 类 号：S562.035.3[农业科学—作物学] S334.5