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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (27): 159-163.doi: 10.11924/j.issn.1000-6850.casb15020101

• 生物技术科学 • 上一篇    下一篇

谷子不育系高146A不育与早抽穗性状遗传关系分析

乔慧琴,杜晓芬,杨慧卿,车星星,袁峰,王智兰,张丹丹,田岗,王军,郭二虎,刘永忠,张林义,彭书忠   

  1. 山西省牧工商总公司,山西省农业科学院谷子研究所,山西省农业科学院谷子研究所,山西省农科院食用菌所,山西省农业科学院谷子研究所,山西省农业科学院谷子研究所,山西省农业科学院,山西省农业科学院谷子研究所,山西省农业科学院谷子研究所,山西省农业科学院谷子研究所,山西省农业科学院谷子研究所,山西省农业科学院谷子研究所,山西省农业科学院谷子研究所
  • 收稿日期:2015-02-26 修回日期:2015-09-06 接受日期:2015-03-24 出版日期:2015-09-23 发布日期:2015-09-23
  • 通讯作者: 王军
  • 基金资助:
    2015年山西省农业科学院科技自主创新能力提升工程项目 “谷子重要性状基因发掘与利用” (2015ZZCX-09)； 2014年山西省财政支农专项资金项目 “谷子杂种优势利用研究与强优势组合选育” (2014ZYFZ-04)； 山西省自然基金项目 “谷子 SSR(EST-SSR)遗传连锁图谱的构建”(2012011032-1)。

Genetic Relationship Analysis Between Infertility and Early-heading Date Trait in Gao 146A, A Highly Male-sterile Line of Foxtail Millet [Setaria italica (L. Beauv.)]

  • Received:2015-02-26 Revised:2015-09-06 Accepted:2015-03-24 Online:2015-09-23 Published:2015-09-23

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摘要： 为了研究杂交组合(高146A×K103)的P1、P2、F1和F2 世代群体对不育系高146A早抽穗性状的遗传特点,本研究利用主基因+多基因混合遗传模型,并且采用χ2测验方法对不育基因与早抽穗控制基因间的遗传关系进行了研究。结果表明：高146A早抽穗性状表现为一数量性状,其遗传符合两对加性-显性-上位性主基因 加性-显性多基因遗传模型,以主基因作用为主,多基因的作用相对较小,其中一对主基因的加性、显性起主要作用,另一个主基因的显性和上位性效有较大作用；在F2群体中,雄性不育和早抽穗两性状共有早熟可育、早熟不育、晚熟可育和晚熟不育等四种表型,表型分离比例符合三对基因独立遗传分配规律(分离比例为39：13：9：3；χ2=3.18 <χ20.05=7.81),这些结果表明控制该雄性不育系高146A的不育和早抽穗性状的三对基因为独立遗传,无连锁关系。

关键词: 农用地整理, 农用地整理, 土地重估, 耕地分等法, 茌平县冯官屯镇

Abstract: Genetic characteristics of the early-heading date in Gao 146A, a highly male-sterile line, were analyzed using the major gene plus polygene mixed inheritance model with the P1, P2, F1 and F2 generations derived from the hybrid Gao 146A × K103, and the genetic relationship between infertility and early-heading date was studied using χ2 test methods in this paper. The results showed that the early-heading trait in Gao 146A was a quantitative trait, and was controlled by two pairs of additive - dominance - epistatic major genes plus additive - dominance polygenic model, and the major gene effects is large, but the multi-gene effect is relatively small, in which a pair of main additive genes played the major role in either additive or dominant effect, and another major gene had a second role in dominant and epistatic effect. There were four kinds of phenotypes of the sterility and heading date in the F2 population, namely early-heading-fertile type, early-heading-infertility type, late-heading-fertile type and late-heading-infertility type, and the segregation ratio was 39:13:9:3, in line with the independently distribution law of three pairs of genes (χ2 = 3.18 < χ20.05 = 7.81). These results suggest that there pairs of genes controlling the male-sterile and early-heading traits respectively are of independent inheritance and non-linkage relationship.