高加索三叶草与白三叶杂种F1代表型遗传变异研究
Studies on Phenotypic Genetic Variation of F1 Hybrids of Trifolium ambiguum Bieb.and T.repens L.
刘嘉伟 1郝新艳 2杜雨芊 3提忠慧 2王明玖2
作者信息
- 1. 内蒙古农业大学草原与资源环境学院,内蒙古 呼和浩特 010011;内蒙古自治区农牧业科学院,内蒙古 呼和浩特 010031
- 2. 内蒙古农业大学草原与资源环境学院,内蒙古 呼和浩特 010011
- 3. 土默特左旗现代农业示范区工作服务中心,内蒙古 呼和浩特 010100
- 折叠
摘要
对高加索三叶草(♀)、白三叶(♂)及其远缘杂交育成的8个F1代株系的13个数量性状和7个质量性状进行调查,研究杂交F1代表型的相对遗传力与杂种优势.结果表明:13个数量性状表型遗传多样性丰富,11个性状的变异系数超过10%;7个质量性状遗传多样性指数较低;F1代表型遗传多为正向显性,相对遗传力a1最高可达1.92,母本对F1 代的相对遗传力较父本高;F1 代杂种优势最明显的是小花数与结实小花数,杂种优势率达 65.03%和80.96%;聚类分析表明,8个F1代与高加索三叶草距离较近,与白三叶距离较远.
Abstract
In this experiment,13 quantitative traits and 7 qualitative traits of Caucasian clover(Trifo-lium ambiguum Bieb.)as the maternal parent,white clover(T.repens L.)as the paternal parent,and 8 F1 generations bred from distant hybridization between them were investigated,to study the phenotypic relative heritability and heterosis of F1 hybrids.The results showed that the phenotypic genetic diversity of 13 quantitative traits was abundant,and the coefficient of variation of 11 traits was more than 10%.The genetic diversity index of 7 quality traits was low.The phenotypic inheritance of the F1 was mostly posi-tively dominant,and the highest relative heritability a1 can reach 1.92.The relative heritability of female parent to F1 was higher than that of male parent.The most obvious heterosis of F1 was the number of flo-rets and fruited florets,and the heterosis rates of 65.03%and 80.96%.Cluster analysis showed that 8 F1 generations were close to Caucasian clover and far from white clover.
关键词
高加索三叶草/白三叶/F1代/表型性状/遗传变异/相对遗传力Key words
Caucasian clover/White clover/F1 generation/Phenotypic character/Genetic variation/Relative heritability引用本文复制引用
基金项目
国家自然科学基金项目(31960353)
国家自然科学基金项目(32160334)
出版年
2024
NETL
NSTL
万方数据