Journal of Integrative Agriculture ›› 2014, Vol. 13 ›› Issue (1): 31-39.DOI: 10.1016/S2095-3119(13)60354-8

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QTLs for Waterlogging Tolerance at Germination and Seedling Stages in Population of Recombinant Inbred Lines Derived from a Cross Between Synthetic and Cultivated Wheat Genotypes

 YU Ma, MAO Shuang-lin, CHEN Guo-yue, LIU Ya-xi, LI Wei, WEI Yu-ming, LIU Chun-ji , ZHENG You-liang   

  1. 1.Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, P.R.China
    2.Agronomy College, Sichuan Agricultural University, Chengdu 611130, P.R.China
    3.CSIRO Plant Industry, St Lucia QLD 4067, Australia
  • 收稿日期:2012-12-05 出版日期:2014-01-01 发布日期:2014-01-04
  • 通讯作者: ZHENG You-liang, Tel: +86-28-86290909, Fax: +86-28-82650350, E-mail: ylzheng@sicau.edu.cn
  • 作者简介:ZHENG You-liang, Tel: +86-28-86290909, Fax: +86-28-82650350, E-mail: ylzheng@sicau.edu.cn
  • 基金资助:

    This work was supported by the National Basic Research Program of China (2011CB100100), the National High- Tech R&D Program of China (2011AA100103) and the National Natural Science Foundation of China (31230053 and 31171556).

QTLs for Waterlogging Tolerance at Germination and Seedling Stages in Population of Recombinant Inbred Lines Derived from a Cross Between Synthetic and Cultivated Wheat Genotypes

 YU Ma, MAO Shuang-lin, CHEN Guo-yue, LIU Ya-xi, LI Wei, WEI Yu-ming, LIU Chun-ji , ZHENG You-liang   

  1. 1.Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, P.R.China
    2.Agronomy College, Sichuan Agricultural University, Chengdu 611130, P.R.China
    3.CSIRO Plant Industry, St Lucia QLD 4067, Australia
  • Received:2012-12-05 Online:2014-01-01 Published:2014-01-04
  • Contact: ZHENG You-liang, Tel: +86-28-86290909, Fax: +86-28-82650350, E-mail: ylzheng@sicau.edu.cn
  • About author:ZHENG You-liang, Tel: +86-28-86290909, Fax: +86-28-82650350, E-mail: ylzheng@sicau.edu.cn
  • Supported by:

    This work was supported by the National Basic Research Program of China (2011CB100100), the National High- Tech R&D Program of China (2011AA100103) and the National Natural Science Foundation of China (31230053 and 31171556).

摘要: Waterlogging is a widespread limiting factor for wheat production throughout the world. To identify quantitative trait loci (QTLs) associated with waterlogging tolerance at early stages of growth, survival rate (SR), germination rate index (GRI), leaf chlorophyll content index (CCI), root length index (RLI), plant height index (PHI), root dry weight index (RDWI), shoot dry weight index (SDWI), and total dry weight index (DWI) were assessed using the International Triticeae Mapping Initiative (ITMI) population W7984/Opata85. Significant and positive correlations were detected for all traits in this population except RLI. A total of 32 QTLs were associated with waterlogging tolerance on all chromosomes except 3A, 3D, 4B, 5A, 5D, 6A, and 6D. Some of the QTLs explained large proportions of the phenotypic variance. One of these is the QTL for GRI on 7A, which explained 23.92% of the phenotypic variation. Of them, 22 alleles from the synthetic hexaploid wheat W7984 contributed positively. These results suggested that synthetic hexaploid wheat W7984 is an important genetic resource for waterlogging tolerance in wheat. These alleles conferring waterlogging tolerance at early stages of growth in wheat could be utilized in wheat breeding for improving waterlogging tolerance.

关键词: wheat , waterlogging tolerance , QTL , germination and seedling stages

Abstract: Waterlogging is a widespread limiting factor for wheat production throughout the world. To identify quantitative trait loci (QTLs) associated with waterlogging tolerance at early stages of growth, survival rate (SR), germination rate index (GRI), leaf chlorophyll content index (CCI), root length index (RLI), plant height index (PHI), root dry weight index (RDWI), shoot dry weight index (SDWI), and total dry weight index (DWI) were assessed using the International Triticeae Mapping Initiative (ITMI) population W7984/Opata85. Significant and positive correlations were detected for all traits in this population except RLI. A total of 32 QTLs were associated with waterlogging tolerance on all chromosomes except 3A, 3D, 4B, 5A, 5D, 6A, and 6D. Some of the QTLs explained large proportions of the phenotypic variance. One of these is the QTL for GRI on 7A, which explained 23.92% of the phenotypic variation. Of them, 22 alleles from the synthetic hexaploid wheat W7984 contributed positively. These results suggested that synthetic hexaploid wheat W7984 is an important genetic resource for waterlogging tolerance in wheat. These alleles conferring waterlogging tolerance at early stages of growth in wheat could be utilized in wheat breeding for improving waterlogging tolerance.

Key words: wheat , waterlogging tolerance , QTL , germination and seedling stages