Mapping QTLs for salt tolerance with additive, epistatic and QTLxtreatment interaction effects at seedling stage in wheat

文献类型: 外文期刊

第一作者: Xu, Y.

作者: Xu, Y.;Zhang, X.;Xu, H.;An, D.;Li, S.;Li, L.

作者机构:

关键词: salt tolerance;quantitative trait locus (QTL);seedling;wheat (Triticum aestivum L;)

期刊名称:PLANT BREEDING ( 影响因子:1.832; 五年影响因子:1.956 )

ISSN: 0179-9541

年卷期: 2013 年 132 卷 3 期

页码:

收录情况: SCI

摘要: Quantitative trait loci (QTLs) for salt tolerance with additive, epistatic and QTLxtreatment interaction effects at seedling stage in wheat were identified. A set of 131 recombinant inbred lines derived from cross Chuan 35050 x Shannong 483 were evaluated under salt stress and normal conditions. Wide variation was found for all studied traits. A total of 18 additive and 16 epistatic QTLs were detected, among which five and 11 were with significant QTLxtreatment effects. Ten QTL clusters were identified, and each may represent a single gene or closely linked genes. The locus controlling shoot K+/Na+ concentration ratio and shoot Na+ concentration on chromosome 5A may be identical to Nax2. The interval Xgwm6-Xgwm538 on chromosome 4B for total dry weight was also identified in a previous study, both near the marker Xgwm6. The marker Xgwm6 may be useful for marker-assisted selection. Six pairs of homoeologous QTLs were detected, showing synteny among the A, B and D genomes. These results facilitate understanding the mechanisms and the genetic basis of salt tolerance in wheat.

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