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| Quantitative Trait Loci Associated with Micronutrient Concentrations in Two Recombinant Inbred Wheat Lines |
| PU Zhi-en, YU Ma, HE Qiu-yi, CHEN Guo-yue, WANG Ji-rui, LIU Ya-xi, JIANG Qian-tao, LI Wei, DAI Shou-fen, WEI Yu-ming , ZHENG You-liang |
1、Triticeae Research Institute, Sichuan Agricultural University, Chengdu 611130, P.R.China
2、College of Agronomy, Sichuan Agricultural University, Chengdu 611130, P.R.China
3、School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, P.R.China |
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摘要 Micronutrient malnutrition affects over three billion people worldwide, especially women and children in developing countries. Increasing the bioavailable concentrations of essential elements in the edible portions of crops is an effective resolution to address this issue. To determine the genetic factors controlling micronutrient concentration in wheat, the quantitative trait locus (QTL) analysis for iron, zinc, copper, manganese, and selenium concentrations in two recombinant inbred line populations was performed. In all, 39 QTLs for five micronutrient concentrations were identified in this study. Of these, 22 alleles from synthetic wheat SHW-L1 and seven alleles from the progeny line of the synthetic wheat Chuanmai 42 showed an increase in micronutrient concentrations. Five QTLs on chromosomes 2A, 3D, 4D, and 5B found in both the populations showed significant phenotypic variation for 2-3 micronutrient concentrations. Our results might help understand the genetic control of micronutrient concentration and allow the utilization of genetic resources of synthetic hexaploid wheat for improving micronutrient efficiency of cultivated wheat by using molecular marker-assisted selection.
Abstract Micronutrient malnutrition affects over three billion people worldwide, especially women and children in developing countries. Increasing the bioavailable concentrations of essential elements in the edible portions of crops is an effective resolution to address this issue. To determine the genetic factors controlling micronutrient concentration in wheat, the quantitative trait locus (QTL) analysis for iron, zinc, copper, manganese, and selenium concentrations in two recombinant inbred line populations was performed. In all, 39 QTLs for five micronutrient concentrations were identified in this study. Of these, 22 alleles from synthetic wheat SHW-L1 and seven alleles from the progeny line of the synthetic wheat Chuanmai 42 showed an increase in micronutrient concentrations. Five QTLs on chromosomes 2A, 3D, 4D, and 5B found in both the populations showed significant phenotypic variation for 2-3 micronutrient concentrations. Our results might help understand the genetic control of micronutrient concentration and allow the utilization of genetic resources of synthetic hexaploid wheat for improving micronutrient efficiency of cultivated wheat by using molecular marker-assisted selection.
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Received: 15 August 2013
Accepted:
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| Fund: This work was supported by the National Natural Science Foundation of China (31301318, 31230053 and 31171556) and the National Basic Research Program of China (2011CB100100). |
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Corresponding Authors:
ZHENG You-liang, Tel: +86-835-2882007, Fax: +86-835-2883153, E-mail: ylzheng@sicau.edu.cn
E-mail: ylzheng@sicau.edu.cn
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| About author: PU Zhi-en, E-mail: puzhien@hotmail.com; YU Ma, E-mail: yuwen.0073@hotmail.com |
Cite this article:
PU Zhi-en, YU Ma, HE Qiu-yi, CHEN Guo-yue, WANG Ji-rui, LIU Ya-xi, JIANG Qian-tao, LI Wei, DAI Shou-fen, WEI Yu-ming , ZHENG You-liang.
2014.
Quantitative Trait Loci Associated with Micronutrient Concentrations in Two Recombinant Inbred Wheat Lines. Journal of Integrative Agriculture, 13(11): 2322-2329.
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