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在单作和套作条件下大豆叶相关性状的遗传图谱构建和 QTL 分析。

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

机构信息

Sichuan Engineering Research Center for Crop Strip Intercropping System, Sichuan Agriculture University, Chengdu, 611130, P. R. China.

College of Agronomy, Sichuan Agriculture University, Chengdu, 611130, P. R. China.

出版信息

Sci Rep. 2019 Feb 25;9(1):2716. doi: 10.1038/s41598-019-39110-8.

DOI:10.1038/s41598-019-39110-8
PMID:30804368
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6390081/
Abstract

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 F 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.

摘要

大豆（Glycine max L.）是一种重要的粮食和油料作物，在中国西南地区广泛间作种植。间作造成的遮荫会改变大豆的生长特性，如大豆叶片和干物质，从而降低产量。为了提高产量并阐明间作大豆叶片相关性状的遗传机制，我们测量了 2015 年和 2016 年来自 'Nandou 12' 和 'Jiuyuehuang' 的杂交 F 重组自交系 (RILs) 在单作和套作两种条件下的六个叶片相关性状。我们发现了 6366 个单核苷酸多态性 (SNP) 标记，这些标记分布在 20 个连锁群中，覆盖了大豆的整个基因组，在 2015 年和 2016 年两个环境中，间隔 0.44cM，共 2818.67cM。在两年的两个环境中检测到 19 个数量性状位点 (QTL)。根据基因表达和 GO 富集分析，发现了三个与叶片相关性状相关的候选基因。这些结果揭示了叶片表型对遮荫的敏感性，并有助于阐明控制叶片相关性状的机制。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fdb/6390081/3ef618823c88/41598_2019_39110_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fdb/6390081/0be626c1ed07/41598_2019_39110_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fdb/6390081/84c06a672961/41598_2019_39110_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fdb/6390081/a4225ff780d3/41598_2019_39110_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fdb/6390081/3ef618823c88/41598_2019_39110_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fdb/6390081/0be626c1ed07/41598_2019_39110_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fdb/6390081/84c06a672961/41598_2019_39110_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fdb/6390081/a4225ff780d3/41598_2019_39110_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2fdb/6390081/3ef618823c88/41598_2019_39110_Fig4_HTML.jpg

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