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Development and evaluation of multi-genotype varieties of rice derived from MAGIC lines

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Abstract

Multi-genotype varieties can effectively alleviate or reverse the decline of genetic diversity in agriculture caused by the predominant extension of mono-genotype (pure line) varieties of crop plants. We devised a novel breeding strategy for developing multi-genotype varieties of rice from MAGIC lines, which were derived from two convergent crosses among 8 or 12 parental lines, respectively. We found that both multi-genotype varieties and varietal mixtures were superior to their component lines/varieties in both yielding and blast-resistance performances. When the multi-genotype varieties were developed through intensive selection, they displayed comparable or better performance in yielding level and disease resistance in comparison to current leading mono-genotype varieties of rice. A promising multi-genotype variety has been selected over a 2-year regional trial in Hainan province and it will be hopefully granted a varietal-release permit. Multi-genotype breeding may be an alternative and feasible solution to the sustainable development of agriculture.

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Acknowledgments

This study was financially supported by the National Science Foundation of China (#31071482), the Ministry of Science and Technology of China—Development of New Varieties for Green Super Rice (#2010AA101804), the Science Foundation of Guangdong Province (#06200585).

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Authors and Affiliations

  1. Rice Research Institute of Guangdong Academy of Agriculture Sciences, Guangzhou, 510640, China

    Xiao-Fang Li, Zhi-Xia Liu, Dong-Bo Lu, Yan-Zhuo Liu & Xing-Xue Mao

  2. Crop Genetics and Breeding Institute of Yangtze River University, Jinzhou, 434025, China

    Xiao-Fang Li & Zhi-Xin Li

  3. Guangzhou Nanguo Agricultural (Group) Co. Ltd., Guangzhou, 510405, China

    Xiao-Fang Li & Hua-Jun Li

Authors
  1. Xiao-Fang Li
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  2. Zhi-Xia Liu
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  3. Dong-Bo Lu
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  4. Yan-Zhuo Liu
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  5. Xing-Xue Mao
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  6. Zhi-Xin Li
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  7. Hua-Jun Li
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Correspondence to Xiao-Fang Li.

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Li, XF., Liu, ZX., Lu, DB. et al. Development and evaluation of multi-genotype varieties of rice derived from MAGIC lines. Euphytica 192, 77–86 (2013). https://doi.org/10.1007/s10681-013-0879-1

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  • DOI: https://doi.org/10.1007/s10681-013-0879-1

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