小麦溶剂保持力的遗传分析  

Genetic Analysis of Solvent Retention Capacity in Wheat

作　　者：张平平[1] 姚金保[1] 马鸿翔[1] 

机构地区：[1]江苏省农业科学院农业生物技术研究所,江苏南京210014

出　　处：《江苏农业学报》2010年第6期1170-1175,共6页Jiangsu Journal of Agricultural Sciences

基　　金：引进国际先进农业科学技术计划("948"计划)项目(2006-G2);国家科技支撑计划(2006BAD01A02);江苏省科技支撑项目(BE2008366-2);江苏省农业科技自主创新基金项目(CX09635)

摘　　要：为明确溶剂保持力的遗传规律,给小麦品质育种提供参考,以6个小麦常用亲本,按Griffing双列杂交法Ⅱ配制15个杂交组合,对蛋白质含量和溶剂保持力的遗传参数进行分析。结果表明：蛋白质含量和溶剂保持力的遗传均符合加性-显性模型,同时受加性和显性效应的作用,且加性效应更重要;控制水溶剂保持力和碳酸钠溶剂保持力的减效基因为显性,控制蛋白质含量、蔗糖溶剂保持力和乳酸溶剂保持力的基因作用方向为双显性;亲本间的蛋白质含量有2~3对主效基因的差异,水溶剂保持力和碳酸钠溶剂保持力有1~2对主效基因的差异,蔗糖溶剂保持力和乳酸溶剂保持力无主效基因的显著差异;水溶剂保持力的狭义遗传力中等,为40.85%,蛋白质含量、碳酸钠溶剂保持力、蔗糖溶剂保持力和乳酸溶剂保持力的狭义遗传力较高,分别为80.59%、72.11%、84.93%和89.35%,在小麦品质育种中,蛋白质含量和溶剂保持力可进行早代筛选。In order to study the genetic law of solvent retention capacity（SRC）,genetic analysis was conducted in six parents of wheat and their F1 obtained from a diallel cross without reciprocals.The results showed that the heritance of flour protein content and solvent retention capacity fit in the additive dominance model and were controlled by both additive and dominant genetic effects,and the additive effect was more important than dominant effect.The alleles decreasing water SRC and sodium carbonate SRC were dominant,and those controlling flour protein content,sucrose SRC,and lactic acid SRC were double dominant.There was difference in two or three pairs of major genes in flour protein content between the four wheat varieties,and difference in one or two pairs of major genes in water SRC and sodium carbonate SRC,no difference in sucrose and lactic acid SRC.Narrow sense heritability of water SRC was moderate（40.85%）,and narrow sense heritabilities of flour protein content,sodium carbonate SRC,sucrose SRC and lactic acid SRC were higher,as 80.59%,72.11%,84.93% and 89.35%,respectively.The methods for testing protein content and SRC had obvious advantages with low cost,good repeatability and high heritability,so it could be used in early generation selection in wheat quality breeding program.

关 键 词：小麦 溶剂保持力 双列杂交 遗传参数 

分 类 号：S512.110.33[农业科学—作物学]