Identification of QTL underlying isoflavone contents in soybean seeds among multiple environments
文献类型: 外文期刊
第一作者: Zeng, Guoliang
作者: Zeng, Guoliang;Li, Dongmei;Han, Yingpeng;Teng, Weili;Wang, Jian;Li, Wenbin;Qiu, Liquan
作者机构:
关键词: QTL;SSR;MAS;Soybean;Isoflavone
期刊名称:THEORETICAL AND APPLIED GENETICS ( 影响因子:5.699; 五年影响因子:5.565 )
ISSN: 0040-5752
年卷期: 2009 年 118 卷 8 期
页码:
收录情况: SCI
摘要: Soybean isoflavones are valued in certain medicines, cosmetics, foods and feeds. Selection for high-isoflavone content in seeds along with agronomic traits is a goal of many soybean breeders. The aim of the study was to identify the quantitative trait loci (QTL) underlying seed isoflavone content in soybean among seven environments in China. A cross was made between 'Zhongdou 27', a soybean cultivar with higher mean isoflavone content in the seven environments (daidzein, DZ, 1,865 mu g g(-1); genistein, GT, 1,614 mu g g(-1); glycitein, GC, 311 mu g g(-1) and total isoflavone, TI, 3,791 mu g g(-1)) and 'Jiunong 20', a soybean cultivar with lower isoflavone content (DZ, 844 mu g g(-1); GT, 1,046 mu g g(-1); GC, 193 mu g g(-1) and TI, 2,061 mu g g(-1)). Through single-seed-descent, 130 F(5)-derived F(6) recombinant inbred lines were advanced. A total of 99 simple-sequence repeat markers were used to construct a genetic linkage map. Seed isoflavone contents were analyzed using high-performance liquid chromatography for multiple years and locations (Harbin in 2005, 2006 and 2007, Hulan in 2006 and 2007, and Suihua in 2006 and 2007). Three QTL were associated with DZ content, four with GT content, three with GC content, and five with TI content. For all QTL detected the beneficial allele was from Zhongdou 27. QTL were located on three (DZ), three (GC), four (GT) and five (TI) molecular linkage groups (LG). A novel QTL was detected with marker Satt144 on LG F that was associated with DZ (0.0014 > P > 0.0001, 5% < R (2) < 11%; 254 < DZ < 552 mu g g(-1)), GT (0.0027 > P > 0.0001; 4% < R (2) < 9%; 262 < GT < 391 mu g g(-1)), and TI (0.0011 > P > 0.0001; 4% < R (2) < 15%; 195 < TI < 871 mu g g(-1)) across the various environments. A previously reported QTL on LG M detected by Satt540 was associated with TI across four environments and TI mean (0.0022 > P > 0.0001; 3% < R (2) < 8%; 182 < TI < 334 mu g g(-1)) in China. Because both beneficial alleles were from Zhongdou 27, it was concluded that these two QTL would have the greatest potential value for marker-assisted selection for high-isoflavone content in soybean seed in China.
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