首页|期刊导航|中国农业科学（英文版）|Analysis of QTLs for the Trichome Density on the Upper and Downer Surface of Leaf Blade in Soybean [Glycine max (L.) Merr.]
中国农业科学（英文版）2009，Vol.8Issue(5)：529-537,9.
Analysis of QTLs for the Trichome Density on the Upper and Downer Surface of Leaf Blade in Soybean [Glycine max (L.) Merr.]
Analysis of QTLs for the Trichome Density on the Upper and Downer Surface of Leaf Blade in Soybean [Glycine max (L.) Merr.]
摘要
Abstract
Trichomes (plant hairs) are present on nearly all land plants and are known to play important roles in plant protection,specifically against insect herbivory,drought,and UV radiation.The identification of quantitative trait loci (QTL) associated with trichome density should help to interpret the molecular genetic mechanism of soybean trichome density.184 recombinant inbred lines (RILs),derived from a cross between soybean cultivars Kefeng 1 and Nannong 1138-2 were used as segregating population for evaluation of TDU (trichome density on the upper surface of leaf blade) and TDD (trichome density on the downer surface of leaf blade).A total of 15 QTL were detected on molecular linkage groups (MLG) A2,Dla,Dlb,E and H by composite interval mapping (CIM) and among all the QTL,qtuA2-1,qtuD 1a-1,qaK)lb-2,qtuH-2 qtuE-1,qtdD1b-2,and qtdH-2 were affirmed by multiple interval mapping (MIM).The contribution of phenotypic variance of qtuH-2 was 31.81 and 29.4% by CIM and MIM,respectively,suggesting it might be major gene Ps loci.Only 10 pairs of main QTL interactions for TDU were detected,explained a range of 0.2-5.1% of phenotypic variations for each pair for a total of 22.8%.The QTL on MLG D 1 b affecting trichome density were mapped near to Rsc-7 conditioning resistance to SMV (soybean mosaic virus).This study showed that the genetic mechanism of trichome density was the mixed major gene and polygene inheritance,and also suggested that the causal nature between trichome density and other agronomic traits.关键词
soybean [Glycine max (L.) Merr.]/TDU/TDD/RI Ls/QTL analysisKey words
soybean [Glycine max (L.) Merr.]/TDU/TDD/RI Ls/QTL analysis分类
农业科技引用本文复制引用
DU Weijun,YU Deyue,FU Sanxiong..Analysis of QTLs for the Trichome Density on the Upper and Downer Surface of Leaf Blade in Soybean [Glycine max (L.) Merr.][J].中国农业科学（英文版）,2009,8(5):529-537,9.基金项目
This work was supported in part by a grant from the International Atomic Energy Agency (CPR-12988),National 973 Program of China (2004CBI 17206),National 863 Program of China (2006AAIOZ 1Cl ),National Natural Science Foundation of China (30771362 and 30471094),the 111 Project from the Ministry of Edu cation of China (B08025),the Key Program of Science and Technology of Shanxi Province of China (051017)and the Scientific Research Foundation for Youth Academic Leaders from University in Shanxi Province of China (200425). （CPR-12988）
