利用远缘杂交与半配合法选育抗蚜棉花新品种  

Selection of New Cotton Variety with Aphid Resistance by Distant Hybridization and Semigamy

作　　者：郭宝德[1] 姜艳丽[2] 冀丽霞[1] 黄穗兰[1] 

机构地区：[1]山西省农业科学院作物遗传研究所,山西太原030031 [2]山西省农业科学院棉花研究所,山西运城044000

出　　处：《山西农业科学》2010年第3期3-5,共3页Journal of Shanxi Agricultural Sciences

摘　　要：以栽培种陆地棉晋棉6号(G hirsutnm,2n=52)作母本、野生种异常棉(G anomalum,2n=26)作父本,采用对杂交铃喷(滴)GA3(45 mg/L),NAA(50 mg/L)和离体培养杂交当代幼胚技术,对F1幼苗进行染色体加倍,以克服杂交当代不亲和性及其后代不育性。F2～F3连续用晋棉6号作父本回交转育,以抗蚜虫、抗枯萎、抗黄萎、早熟、高产为目标,自F4连续11代定向选择与鉴定,应用棉花半配合育种技术快速稳定远缘杂交后代,克服了远缘杂种后代各种性状长期疯狂分离的现象,育成了特早熟抗蚜棉花新品种晋棉51号。Crosses were made with upland cotton cuhivars Jinmian 6 as the female parent and wild species of cotton abnormal male parent. The chromosomes of F1 seedings were doubled on hybrid bell by using spray （drop） GA3 （45 mg/L）, NAA （50 ing/L） and in vitro cultured immature embryos of contemporary hybridization technology to overcome hybrid incompatibility and their contemporary descendants sterility. Baekeross was continuously made with Jinmian 6 as male in F2 - F3, then the directional selection and identification were made since the F4 for 11 times to anti-aphids, anti-withering, anti-yellow wilt, early maturity and high yield. The distant hybrid progenies were stabilized rapidly by using cotton semigamy breeding technology. The long-term crazy separation phenomenon have been overcome in the distant hybridization offspring, and the new Jinmian 51 variety with early maturing and aphid resistance have been bred.

关 键 词：棉花 远缘杂交 抗蚜 染色体加倍 

分 类 号：S562.034[农业科学—作物学]