Genetic map construction and QTL analysis of leaf-related traits in soybean under monoculture and relay intercropping

被引：8
作者：
Liu, Dai-Ling [1 ,2 ]
Chen, Si-Wei [1 ,3 ]
Liu, Xin-Chun [2 ]
Yang, Feng [1 ,2 ]
Liu, Wei-Guo [1 ,2 ]
She, Yue-Hui [2 ]
Du, Jun-Bo [1 ,2 ]
Liu, Chun-Yan [1 ,2 ]
Yang, Wen-Yu [1 ,2 ]
Wu, Xiao-Ling [1 ,2 ]
机构：
[1] Sichuan Agr Univ, Sichuan Engn Res Ctr Crop Strip Intercropping Sys, Chengdu 611130, Sichuan, Peoples R China
[2] Sichuan Agr Univ, Coll Agron, Chengdu 611130, Sichuan, Peoples R China
[3] Sichuan Acad Agr Sci, Ind Crop Res Inst, Chengdu 610300, Sichuan, Peoples R China
来源：
SCIENTIFIC REPORTS | 2019年 / 9卷 / 1期
关键词：
RECOMBINANT INBRED LINES; WATER-USE EFFICIENCY; AGRONOMIC TRAITS; LOCI; IDENTIFICATION; SEED;
D O I：
10.1038/s41598-019-39110-8
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Soybean (Glycine max L.) is an important food and oil crop widely planted by intercropping in southwest China. The shade caused by intercropping changes plant growth traits, such as soybean leaf and dry mass, thereby reducing yields. To improve the yield and elucidate the genetic mechanism of the leaf-related traits in intercropped soybeans, we measured the F6: 7-8 recombinant inbred lines (RILs) derived from the cross of 'Nandou 12' and 'Jiuyuehuang' for six leaf-related traits under monoculture and relay intercropping in 2015 and 2016. We found 6366 single-nucleotide polymorphisms (SNPs) markers that covered the whole genome of soybean distributed in 20 linkage groups, which spanned 2818.67 cM with an average interval of 0.44 cM between adjacent markers. Nineteen quantitative trait loci (QTLs) were detected in two environments in 2 years. Three candidate genes associated to leaf-related traits were found according to gene expression and GO enrichment analyses. These results revealed the susceptibility of leaf phenotype to shading and helped elucidate the mechanisms that control leaf-related traits.
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页数：11
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