4个CIMMYT玉米热带种质直接利用潜力的初步研究  

Preliminary Study on Direct Utilization of Four Maize Tropical Populations from CIMMYT

作　　者：高世斌[1] 潘光堂[1] 胡尔良[1] 张继海[1] 

机构地区：[1]四川农业大学玉米研究所,四川雅安625014

出　　处：《玉米科学》2005年第4期27-29,33,共4页Journal of Maize Sciences

基　　金：农业部948项目(2003-Q03);四川省科技攻关项目(04NG002-006-2)资助

摘　　要：参照NCⅡ设计,采用基于混合线性模型的遗传分析方法,对4个CIMMYT群体进行了群体遗传效应与应用潜力分析。结果表明,4个群体与5个测交系共20个组合的平均单株产量中有13个超过对照川单25;StayGreen-Y群体的加性效应显著高于Tuxpeno、Pool26、Pob25群体;且StayGreen-Y与Mo17和掖478之间具有显著的杂种优势。进一步根据StayGreen-Y群体内的单株遗传效应分析,鉴定出了加性效应值较高的单株用于自交加代。The genetic effect and potential utilization of Four tropical maize populations were analyzed based on NC Ⅱ mating design by mixed lined genetic model method. The results showed that 13 out of 20 combinations crossed from 4 popuahions and 5 testing lines exceeded check hybrid Chuandan 25 on average individual plant yield; and the additional genetic effect of Stay Green-Y was higher than those of Tuxpeno, Pcol 26 and Pob 25; furthermore, the significant heterosis of were founded among Stay green-y with Mo17 and Ye478 respectively. According to the individual plant genetic effect of Stay green-y, potential plants were selected to self-pollinate for inbred lines.

关 键 词：玉米 群体改良 热带种质 遗传效应 

分 类 号：S513.024[农业科学—作物学]