Methods for mapping QTLs underlying endosperm traits based on random hybridization design

作     者：WEN Yongxian WU Weiren 

作者机构：College of Crop Science Fujian Agriculture & Forestry UniversityFuzhou 350002 China 

出 版 物：《Chinese Science Bulletin》 (中国科学通报)

年 卷 期：2006年第51卷第16期

页      面：1976-1981页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 09[农学] 071007[理学-遗传学] 0901[农学-作物学] 090102[农学-作物遗传育种] 

基　　金：Key Sci-Tech Project of Fujian Province  (2004NZ01-2) 

主　　题：胚乳 QTLs 随机杂化设计 遗传模型 

摘      要：Several methods of interval mapping of QTLs underlying endosperm traits based on random hybridization designs and the triploid genetic model are proposed. The basic idea is: plants (or lines) from a population with known marker genotype information are randomly hybridized to generate a population of hybrid lines for endosperm QTL mapping; a mixture of seeds of each hybrid line is measured for the en- dosperm trait to get the mean of the line; then en- dosperm QTL mapping and effect estimation is per- formed using the endosperm trait means of hybrid lines and the marker genotype information of parental plants (or lines). The feasibility and efficiency of the methods are examined by computer simulations. Results show that the methods can precisely map endosperm QTLs and unbiasedly and efficiently es- timate the three effects (additive effect, first dominant effect, second dominant effect) of endosperm QTLs.