作物学报2011，Vol.37Issue(7)：1151-1158,8.DOI:10.3724/SP.J.1006.2011.01151
大豆幼苗根系性状的QTL分析
QTL Analysis of Root Traits of Soybean at Seedling Stage
摘要
Abstract
Root system plays important roles in plant growth and development, including uptaking water and nutrient, resisting biotic and abiotic stresses, and finally influencing yield and quality. A number of QTLs for shoot traits have been detected using different populations in soybean [Glycine max (L.) Merr.], but rarely for root trait. The aim of the present study was to identify QTLs for some root traits at seedling stage in soybean. A total of 165 recombinant inbred lines (RILs) derived from the cross between Zhongdou 29 and Zhongdou 32 were used. Soybean seedlings were hydroponically cultured, root traits including main root length, number of lateral roots, root weight, root volume, and aerial part traits such as plant weight, shoot weight per plant, and ratio of root weight to shoot weight were measured at the stage of V2 (first trifoliolate leaf fully expanded). By composite interval mapping (CIM) method, twenty QTLs for roots and aerial part traits were mapped on eight chromosomes, including nine major-effect QTLs on chromosome 11 and 14 with 10.5-26.1% of the phenotypic variation. On chromosome 11 and 14, some QTLs for root traits and aerial part traits were clustered, which was consistent with the correlation analysis of phenotypic traits, indicating that the root traits are associated with the shoot traits.关键词
大豆/根系性状/幼苗期/QTL定位Key words
Soybean/ Root traits/ Seedling stage/ QTL mapping引用本文复制引用
周蓉 ,江木兰 ,周新安,陈海峰 ,王贤智 ,伍宝朵 ,陈水莲 ,张晓娟 ,吴学军 ,杨中路,邱德珍..大豆幼苗根系性状的QTL分析[J].作物学报,2011,37(7):1151-1158,8.基金项目
本研究由国家自然科学基金项目(30871554,30900906),国家高技术研究发展计划(863计划)项目(2006AA1000104),国家“十一五”科技支撑计划项目(2006BAD01A04-3)和国家转基因生物新品种培育重大专项(2008ZX08004-005,2009ZX08009-133B,2009ZX08009-120B)资助. （30871554,30900906）
