摘要
综述了分子标记在玉米产量 QTL 和杂种优势遗传基础方面的概况。对玉米产量 QTL 的研究方法,QTL 数目、位置和遗传效应及应用作了介绍。比较了多种利用 QTL 结果对杂种优势的解释。作者认为,杂种优势的产生是显性效应,超显性效应和上位性效应共同作用的结果,不可能只是一种基因效应在起作用。并提出杂种通过自组织理论而形成的最优基因表达调控是杂种优势形成的理论基础。
Progress in studies on maize yield QTL and the genetic theoretical basis of hetero- sis by using molecular markers are reviewed.In this paper,the methods of measured on maize yield QTL,QTL number and position,their genetic effect and application were intro- duced;various explanations of heterosis based on QTL were compared.However,We think that heterosis is caused by the complex effects of dominance,over-dominance and epistasis. It was suggested the theoretic basis of heterosis results from best-optimum gene expression and regulation formed by hybrid auto-organization.
出处
《中国农业大学学报》
CAS
CSCD
北大核心
1999年第C00期1-7,共7页
Journal of China Agricultural University
基金
国家自然科学基金 39893350
关键词
产量QTL
遗传图谱
杂种优势
玉米
分子标记
yield QTL
genetic map
heterosis
gene network
auto-organization
gene expression and regulation
