Mapping isoflavone QTL with main, epistatic and QTL × environment effects in recombinant inbred lines of soybean

PloS One
Yan WangWenbin Li

Abstract

Soybean (Glycine max (L.) Merr.) isoflavone is important for human health and plant defense system. To identify novel quantitative trait loci (QTL) and epistatic QTL underlying isoflavone content in soybean, F5:6, F5:7 and F5:8 populations of 130 recombinant inbred (RI) lines, derived from the cross of soybean cultivar 'Zhong Dou 27' (high isoflavone) and 'Jiu Nong 20' (low isoflavone), were analyzed with 95 new SSR markers. A new linkage map including 194 SSR markers and covering 2,312 cM with mean distance of about 12 cM between markers was constructed. Thirty four QTL for both individual and total seed isoflavone contents of soybean were identified. Six, seven, ten and eleven QTL were associated with daidzein (DZ), glycitein (GC), genistein (GT) and total isoflavone (TI), respectively. Of them 23 QTL were newly identified. The qTIF_1 between Satt423 and Satt569 shared the same marker Satt569 with qDZF_2, qGTF_1 and qTIF_2. The qGTD2_1 between Satt186 and Satt226 was detected in four environments and explained 3.41%-10.98% of the phenotypic variation. The qGTA2_1, overlapped with qGCA2_1 and detected in four environments, was close to the previously identified major QTL for GT, which were responsible for large a effects. QTL ...Continue Reading

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Citations

Jul 5, 2016·Frontiers in Plant Science·Sangam L DwivediRodomiro Ortiz
May 18, 2016·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Shan MengJunyi Gai
May 31, 2019·International Journal of Molecular Sciences·Adriano Costa de CamargoAndrés R Schwember
Nov 22, 2017·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Zhandong CaiHai Nian
Jul 28, 2020·Breeding Science·Md Abdur Rauf SarkarSatoshi Watanabe
Jan 5, 2021·Frontiers in Nutrition·Minke YangXiang Fang

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Datasets Mentioned

BETA
GM07

Methods Mentioned

BETA
PCR

Software Mentioned

WinQTLCart2
GGE Bioplot
QTLNetwork
Mapchart
MAS
Mapmaker

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