大麦赤霉病新抗源盐96157抗性的遗传分析  

Genetic Analysis on the Resistance to Fusarium Head Blight of a Novel Resistant Barley Cultivar Yan 96157

作　　者：郑义[1] 陆维忠[1] 陈建民[2] 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 [2]扬州大学生物科学与技术学院,江苏扬州225009

出　　处：《麦类作物学报》2008年第2期329-333,共5页Journal of Triticeae Crops

基　　金：国家“973”中荷战略科学联盟项目(2004CB720407);国家“863”项目(2006AA100102)

摘　　要：为了研究大麦赤霉病抗性的遗传机制，应用植物数量性状主基因＋多基因混合遗传模型对抗赤霉病大麦品种盐96157与感病品种浙97-23构建的六家系群体（P1、F1、P2、B1、B2、F2）的赤霉病抗性进行了多世代联合分析。结果表明，盐96157×浙97-23组合赤霉病抗性受两对加性-显性-上位性主基因＋加性-显性-上位性多基因（E模型）控制，B1、B2和F2群体赤霉病抗性主基因的遗传率分别为44.67%、68.01%和83.87%，多基因遗传率为3.53%～20.23%，环境方差占总方差的10.26%～51.80%，说明大麦赤霉病抗性的表达受基因型和环境双重影响，主效基因的存在意味着可通过杂交育种将盐96157大麦的抗性基因向其他栽培品种中转移。Fusarium head blight （FHB） severity in the cross of Yan 96157 and Zhe 97-23 was analyzed by applying the major gene-polygene mixed inheritance model to a joint analysis of multi-generations （P1, F1 , P2, B1, B2, F2 ） in order to study the genetic mechanism of the resistance to FHB in barley cultivar Yan 96157. The results showed that the FHB resistance in the cross of barley Yan 96157 and Zhe 97-23 was controlled by two major genes with additive-dominance-epistatic effects plus polygenes with additive-dominance-epistatic effects （E model）. Heritability values of major genes in B1, B2 and F2 populations were 44. 67%, 68. 01% and 83. 87% respectively, while those of polygenes were 3.53%, 20.23% and 5.87%. Variance of environment ranged from 10. 26% to 51.80% in total variance, indicating the resistance to FHB was affected by both of genotype and environment. Two major genes controlling the resistance to FHB in barley Yan 96157 suggested that the resistant genes could be transfer to other commercial cultivars from Yan 96157 by conventional hybridization.

关 键 词：大麦 赤霉病抗性 主基因+多基因混合遗传 

分 类 号：S512.3[农业科学—作物学]