玉米部分优异资源主要性状的遗传表现及利用  

GENETIC EXPRESSION OF SEVERAL NEW MAIZE INBREDS FOR MAIN CHARACTERS AND THEIR APLICATION

作　　者：张彪[1] 于香云[2] 朱小阳[2] 

机构地区：[1]四川省农科院作物所,成都市610066 [2]中国农科院品资所,北京市100081

出　　处：《四川农业大学学报》1996年第2期177-182,共6页Journal of Sichuan Agricultural University

基　　金：国家玉米种质资源攻关课题

摘　　要：以“八五”征集编目的优异玉米自交系为材料，采用不完全双列杂交设计研究了主要性状的遗传表现。结果表明：多数主要性状的一般配合力符合育种要求的、遗传上表现优异的资源有：武132、武135、中5021、齐318和48－2，可在育种中直接利用，其产量一般配合力较高，也可间接利用。小区产量的一般配合力与株高、穗位高、穗粗、千粒重的一般配合力正相关显著，有利于间接改良和选择。小区产量与其相应特殊配合力表现不一致，以特殊配合力效应作评判时要慎重。By using the mating design Ⅱ, maize inbred lines, regarded asexscellent, were tested for main traits in 1994. The results indicated that thelines W132, W135, Zhong-5021, Qi-318 and 48-2, their general combining abilities(GCA) of most traits, were of benefit to F1 heterosis and can be directly used asyarents in lybrid corn breeding and indirectly as basic materials for imyrovingindividual trait of other lines. GCA of plot yield was positively correlated withthe GCA of plant height, ear height, ear diameter, 1000 kernel weight. Theircorrelations can give some guide to the improyement and selection of inbred lines.The Plot yields didn't coincide with eatimates of special combining ability(SCA) of plot yield. Using SCA evaluate crosses must be careful.

关 键 词：玉米 自交 配合力 杂种优势 

分 类 号：S513.035.1[农业科学—作物学]