大麦籽粒淀粉含量的主基因＋多基因遗传模型分析  

Major Genes Plus Polygenes Mixed Inheritance Model for Starch Contents in Barley Seed

作　　者：吕亮杰[1,2] 郭元世[1,2] 杜丽杰[1,2] 吕超[1,2] 张新忠[1,2] 郭宝健[1,2] 许如根[1,2] 

机构地区：[1]扬州大学农学院江苏省作物遗传生理重点实验室 [2]扬州大学大麦研究所,江苏扬州225009

出　　处：《麦类作物学报》2014年第1期13-22,共10页Journal of Triticeae Crops

基　　金：国家大麦青稞产业技术体系建设专项(CARS-05);国家农业科技成果转化基金项目(2012GB2C1001720);国家863计划项目(2012AA101105);江苏省高校优势学科(作物学)建设工程资助项目

摘　　要：为了解大麦籽粒淀粉含量的遗传规律,以Noso Nijo×泰兴9425杂种F1花药培养的191个DH系及其亲本为材料,利用植物数量性状主基因+多基因混合遗传模型分析大麦籽粒淀粉含量的遗传规律。结果表明,2010和2012年大麦直链淀粉含量分别符合两对连锁抑制作用主基因模型(B-2-9)和两对连锁互补作用主基因+加性多基因遗传模型(E-2-7),支链淀粉含量分别符合两对抑制作用主基因+加性多基因遗传模型(E-1-9)和两对连锁显性-上位性作用主基因+加性多基因遗传模型(E-2-4),支/直比均符合两对抑制作用主基因模型(B-1-9),总淀粉含量均符合三对等比例加性作用主基因+加性多基因遗传模型(G-2)。In order to understand the genetic model and regularities of starch contents in barley seed, 191 DH lines derived from Noso Nijo and Taixing 9425 were used as materials in this study. The amy- lose content and amylopectin content in barley seed were analyized by the method dual wavelength spectrophotometry. And the amylose content, amylopectin content and total starch contents were computed. Then plant quantitive traits major genes plus polygenes mixed inheritance model were used to analyzed the genetic regularities of starch contents in barley seed. The main results showed that the amylose content in 2010 and 2012, respectively accord with two linkage inhibition major genes model （B-2-9） and two linkage complementary major genes plus polygenic inheritance model （E-2-7）, amyl- opectin content accord with two inhibition major gene plus polygenic inheritance model （E-1-9） and two linkage dominant epistatic major genes plus additive polygenic inheritance model （E-2-4）, the ratio of amylopectin and amylose conform to the two inhibition major gene model （B-1-9）starch content ac- cord with three major gene plus polygenic inheritance model（G-2） starch components of barley showed the existences of two or three major model .

关 键 词：大麦 籽粒淀粉含量 遗传模型 

分 类 号：S512.3[农业科学—作物学] S330