作物学报2018，Vol.44Issue(6)：931-937,7.DOI:10.3724/SP.J.1006.2018.00931
小麦骨干亲本临汾5064单元型区段的遗传解析
Genetic Analysis of Haplotype-blocks from Wheat Founder Parent Linfen 5064
摘要
Abstract
The objective of this study was to provide essential basis for further utilization of Linfen 5064, an elite founder parent, through dissecting haplotype-blocks of Linfen 5064 transmitted to its progenies. A total of 895 alleles were detected on 395 SSR loci in Linfen 5064 and the 21 derived varieties (lines), with 1–8 alleles per locus and an average of 2.27. The average polymorphism information content (PIC) was 0.25. On 146 loci, the alleles were identical between all derived varieties (lines) and the parent, and genetic contributions of the parent were higher than 80% on 30 loci. Generally, the genetic contributions of Linfen 5064 to the first- and second-derived generations were 65.30% and 64.24%, and the contribution ratio did not decrease significantly along with the increase of generations. Sixteen haplotype-blocks were inherited completely from the parent to all derived varieties (lines) and the haplotype-blocks with contribution ratios higher than 80% were distributed on all the 21 chromosomes. In combination with the results of association analysis, almost every haplotype-block was associated with QTLs controlling important agronomic traits, indicating these chromosomal segments were strongly selected in breeding programs.关键词
小麦/骨干亲本/临汾5064/遗传贡献/单元型区段Key words
wheat/founder parent/Linfen 5064/genetic contribution/haplotype-block引用本文复制引用
乔玲,刘建军,张建诚,郑军,刘成,郑兴卫,赵佳佳,尚保华,马小飞,乔麟轶,盖红梅,姬虎太..小麦骨干亲本临汾5064单元型区段的遗传解析[J].作物学报,2018,44(6):931-937,7.基金项目
本研究由国家重点研发计划项目(2017YFD0100600),山西省主要农作物种质创新与分子育种重点科技创新平台(201605D151002),山西省农业科学院育种工程项目(17yzgc010)和山西省重点研发计划项目(201703D211007)资助.This study was supported by the National Key Research and Development Program of China (2017YFD0100600), the Key Scientific and Techno-logical Innovation Platform for Main Crop Germplasm Innovation and Molecular Breeding (201605D151002), the Breeding Program of Shanxi Academy of Agricultural Sciences (17yzgc010), and the Nation Key Research and Development Program of Shanxi Province (201703D211007). （2017YFD0100600）
