CAJ | 학술논문

研究温敏雄性不育系SCT-1在四川生态环境下的育性遗传特征,为其应用提供理论依据。选用2个具一定恢复效果的品系B2183、M2003-1,分别与SCT-1杂交构建群体,利用亲本、F1及F2群体的表型数据,采用主基因+多基因遗传模型对SCT-1育性遗传特性进行分析。结果表明：SCT-1育性主要受核基因控制,2个组合F2育性均呈连续分布,具多峰、偏态现象,SCT-1/B2183组合育性遗传符合MX2-AD-AD模型,即2对加性-显性主基因+加性-显性多基因模型；SCT-1/M2003-1组合符合MX1-AD-ADI模型,即1对加性-显性主基因+加性-显性-上位性多基因模型；2个组合中主基因遗传率分别为92.89%,91.19%,主基因对育性恢复的影响较大。聚合多个主基因的恢复材料对SCT-1杂交育种利用更为有利。
연구온민웅성불육계SCT-1재사천생태배경하적육성유전특정,위기응용제공이론의거。선용2개구일정회복효과적품계B2183、M2003-1,분별여SCT-1잡교구건군체,이용친본、F1급F2군체적표형수거,채용주기인+다기인유전모형대SCT-1육성유전특성진행분석。결과표명：SCT-1육성주요수핵기인공제,2개조합F2육성균정련속분포,구다봉、편태현상,SCT-1/B2183조합육성유전부합MX2-AD-AD모형,즉2대가성-현성주기인+가성-현성다기인모형；SCT-1/M2003-1조합부합MX1-AD-ADI모형,즉1대가성-현성주기인+가성-현성-상위성다기인모형；2개조합중주기인유전솔분별위92.89%,91.19%,주기인대육성회복적영향교대。취합다개주기인적회복재료대SCT-1잡교육충이용경위유리。
In this research we try to explore the genetic characteristics of thermo-sensitive male sterility line SCT-1 in Sichuan ecological condition,in order to provide a theoretical guidance for its utilization and lay a founda-tion for the further breeding. We chosed two different restore lines to make the two crosses (SCT-1/B2183,SCT-1/M2003-1),investigated the self-setting seed in 4 populations of 2 parents (P1 and P2),F1 and F2 to analyses genet-ic characteristics of sterility by the mixed major gene plus poly-genes genetic model method. Results showed that the genetic model MX2-AD-AD ( two additive-dominance major genes plus additive-dominance poly-genes ) was the most suitable model for the cross SCT-1/B2183,while MX1-AD-ADI(one additive-dominance major genes plus ad-ditive-dominance-epitasis poly-genes) model was better fit the cross SCT-1/M2003-1. Major-gene heritability of the two different crosses was 92. 89% and 91. 19% respectively. Major-genes have important influence in fertility,we could cultivate good restore line by converge different major-gene.