质量-数量性状及其遗传基础

质量-数量性状及其遗传基础 QUALITATIVE-QUANTITATIVE TRAITS AND THEIR GENETIC BASIS 胡中立 Hu Zhongli Liu Houli Zhang Xiufu 1 2 3 4 first-author 刘后利 1 2 3 4 张修富 1 2 3 4 武汉大学生物系 武汉大学生物系 Department of Biology, Wuhan University Department of Biology, Wuhan University 华中农业大学农学系 华中农业大学农学系 湖北大学生物系 湖北大学生物系 武汉大学生物系华中农业大学农学系湖北大学生物系 武汉大学生物系华中农业大学农学系湖北大学生物系 基于长期的遗传育种实践所碰到的大量有关问题,作者按生物性状的表达方式对生物各种遗传性状进行了新的划分,提出了"质量—数量性状（模糊性状）"的概念,进而提出并从理论上证明了选择前提下的"基因（依效应）随机纯合假说",讨论了质量—数量性状的数量遗传模型,从而为进一步分析和估计该类性状的遗传参数打下了理论基础。 With regards to problems encountered in practice of genetics and plant breeding, the author, based on the genetic modes of metrical traits, made a re-classification of them for the establishment of a new concept——the Qualitative-Quantitative traits （simplified as Q-Q traits）. Furthermore, a hypothesis that "Genes would be randomly homozygous by their effects" was proposed and later proved theoretically from the genetic makeup of the traits. At last, a expanded quantitative genetic model was made as P=G+g+E where p is the phenotypic value, G and g is the geontypic values of the major genes and the minor genes respectively, and E is the environmental deviation. This is essential for the biometrical genetic analysis of the Q-Q traits. 质量-数量性状 主-微基因 遗传假说 遗传模型 Qualitative-Quantitative traits major-minor genes genetic hypothesis genetic model 1989-03-01 2021-04-01 3