玉米自交系×大刍草远缘杂交后代性状变异研究初探  

Preliminary Study of Trait Variations in the Progenies of Inbred Maize Lines×Zea luxurians

作　　者：芦立婷[1] 陈景堂[1] 黄亚群[1] 祝丽英[1] 宋占权[2] 刘志增[1] 

机构地区：[1]河北农业大学农学院,河北保定071001 [2]保定师范专科学校,河北保定071051

出　　处：《西北植物学报》2005年第9期1751-1755,共5页Acta Botanica Boreali-Occidentalia Sinica

基　　金：河北省"十五"科技攻关项目(03220144D);河北农业大学博士;回国人员科研启动基金项目

摘　　要：采用人工剥苞多次授粉方法,将近缘一年生二倍体类玉米(大刍草)与普通玉米自交系杂交,对F1、F2以及回交后代B 1的抽雄期、吐丝期、散粉期、株高、穗位高、分蘖进行调查研究,分析远缘杂交后代农艺性状的遗传变化.结果表明,远缘杂交后代株高、穗位高分离变异较大,而抽雄期、吐丝期、散粉期分离变异较小,不同世代植株分蘖变化较大,F1代有57.5%植株、F2代有23%植株、BC1F1代有0.8%植株有分蘖;雌穗光周期敏感性大于雄穗.With their pollination assisted by bracteal leaf opening, Zea lu：rurians, an annual quasi-corn diploid, was crossed with the inbred lines of common corn. Tasseling and silking times, pollen-dispersing,plant heights, heights to ear position and tillers of the F1, F2 as well as the backcross progenies were investigated to study the genetic variations of agronomic traits in the progenies of distant crossing. The results showed that the plant heights and the heights to ear position heavily varied in different generations of distant crossing except at the tasseling, silking and pollen-dispersing stages when they slightly varied; the progenies in different generations of distant crossing varied with the tiller-carrying plants accounting for 57.5% in Fi, 23% in F2, and 0.8% in BC1F1; The ears were more sensitive to light than the tassels.

关 键 词：栽培玉米 大刍草 远缘杂交 农艺性状 遗传变异 

分 类 号：Q321.3[生物学—遗传学] S513[农业科学—作物学]