鲜食糯玉米苞叶相关性状的遗传相关分析  

Genetic analysis and assessment of corn-husk traits of fresh-eating waxy corn

作　　者：吕桂华[1] 陈坚剑[1] 徐秀红[2] 郭国锦[1] 

机构地区：[1]浙江省东阳玉米研究所,浙江东阳322100 [2]贵州大学农学院,贵州贵阳550025

出　　处：《浙江农业学报》2015年第7期1122-1126,共5页Acta Agriculturae Zhejiangensis

基　　金：浙江省公益性面上项目(2014C32028);重大科技专项农业项目玉米新品种选育(2012C12902-4)

摘　　要：以10个鲜食糯玉米自交系为亲本,采用完全双列杂交设计,对苞叶主要性状和杂交种F1的苞叶配合力进行分析研究。结果表明,苞叶厚度、最外苞叶长(宽)、最长苞叶长(宽)、最内苞叶长(宽)、苞叶张数、苞叶鲜重、苞叶干重一般配合力方差分析都达到显著、极显著水平,特殊配合力除最长苞叶宽外,也达到显著、极显著水平。亲本的一般配合力和组合的特殊配合力之间无必然联系。苞叶张数、最长苞叶长、鲜苞叶重和干苞叶重主要受加性基因效应控制;苞叶厚度、最外苞叶长(宽)、最长苞叶宽、最内苞叶长(宽)遗传上除加性效应外,尚有显性和上位性效应存在。In this experiment, 10 fresh-eating waxy maize inbred lines were used as parents＇ materials to study genet- ic analysis of corn bract and combining ability of F1 bract by complete diallel cross design. The results showed that variance analysis of general combining ability of bract thickness, the outermost bract length （ width）, the longest bract length （width）, the innermost bract length （width）, bract number, bract fresh weight and bract dry weight reached an extremely significant level. Moreover, special combing ability of the above, except the longest bract length （width） , achieved an extremely significant level. There was no difference between GCA and SCA of parents. The longest bract length, bract number, bract fresh weight and bract dry weight were controlled by additive gene effects; Bract thickness, the outermost bract length （width）, the longest bract width and the innermost bract length （width） were controlled by dominant and epistatie effects, including additive gene effects.

关 键 词：苞叶 糯玉米 遗传力 双列杂交 

分 类 号：S513[农业科学—作物学]