Journal of Integrative Agriculture ›› 2013, Vol. 12 ›› Issue (2): 198-208.DOI: 10.1016/S2095-3119(13)60219-1

• 论文 •    下一篇

Comparison and Analysis of QTLs, Epistatic Effects and QTL×Environment Interactions for Yield Traits Using DH and RILs Populations in Rice

 ZHAO Xin-hua, QIN Yang, JIA Bao-yan, Suk-Man Kim, Hyun-Suk Lee, Moo-Young Eun, Kyung-Min   

  1. 1.Department of Agronomy, Shenyang Agricultural University, Shenyang 110866, P.R.China
    2.School of Applied Biosciences, College of Agriculture & Life Science, Kyungpook National University, Daegu 702-701, Republic of Korea
    3.Bio Safety Division, Department of Agricultural Biotechnology, National Academy of Agricultural Sciences, Rural Development
    Administration, Suwon 441-707, Republic of Korea
    4.C/O IRRI-Korea office, National Institute of Crop Science, Rural Development Administration, Suwon 441-857, Republic of Korea
  • 收稿日期:2012-02-27 出版日期:2013-02-01 发布日期:2013-02-06
  • 通讯作者: Correspondence Jae-Keun Sohn, Tel: +82-53-9505711, Fax: +82-53-9586880, E-mail: jhsohn@knu.ac.kr
  • 作者简介:ZHAO Xin-hua, Mobile: 13840010478, E-mail: zxh0427@126.com
  • 基金资助:

    This work was supported by the Biogreen 21 R&D Program, Rural Development Administration, Republic of Korea (20100301-061-239-001-09-00) and the National Agriculture Science Technology Achievement Transformation Fund of China (2011GB2B000006).

Comparison and Analysis of QTLs, Epistatic Effects and QTL×Environment Interactions for Yield Traits Using DH and RILs Populations in Rice

 ZHAO Xin-hua, QIN Yang, JIA Bao-yan, Suk-Man Kim, Hyun-Suk Lee, Moo-Young Eun, Kyung-Min   

  1. 1.Department of Agronomy, Shenyang Agricultural University, Shenyang 110866, P.R.China
    2.School of Applied Biosciences, College of Agriculture & Life Science, Kyungpook National University, Daegu 702-701, Republic of Korea
    3.Bio Safety Division, Department of Agricultural Biotechnology, National Academy of Agricultural Sciences, Rural Development
    Administration, Suwon 441-707, Republic of Korea
    4.C/O IRRI-Korea office, National Institute of Crop Science, Rural Development Administration, Suwon 441-857, Republic of Korea
  • Received:2012-02-27 Online:2013-02-01 Published:2013-02-06
  • Contact: Correspondence Jae-Keun Sohn, Tel: +82-53-9505711, Fax: +82-53-9586880, E-mail: jhsohn@knu.ac.kr
  • About author:ZHAO Xin-hua, Mobile: 13840010478, E-mail: zxh0427@126.com
  • Supported by:

    This work was supported by the Biogreen 21 R&D Program, Rural Development Administration, Republic of Korea (20100301-061-239-001-09-00) and the National Agriculture Science Technology Achievement Transformation Fund of China (2011GB2B000006).

摘要: Two genetic linkage maps, constructed by DH and RILs populations derived from the same parents, were carried out for the identification and comparison of QTLs controlling yield traits across different years in rice (Oryza sativa L.). A total of 194 SSR and STS markers were used in two maps, of which 114 markers were same. The distribution of Samgang allele was higher in RILs population than it in DH population. Comparing with DH population, RILs population has more lines with higher yield and wider phenotypic transgressive segression for yield traits. Although most of QTLs for the same trait were different in two populations across different years, 8 QTLs (including gwp11.1, spp5.1, spp10.1, spp11.2, ssr1.1, ssr11.1, tgw9.1 and tgw11.1) were detected over 2 yr. It is important to note that ppp10.1, spp10.1 and tgw9.1 were identified in two populations, while spp10.1 and tgw9.1 were simultaneity observed across different years. Epistatic effects were more important than additive effects for PPP, SPP, yield in DH population and TGW, yield in RILs population. Epistatic effects of DH and RILs populations were different on the same genetic background in the present study, which illuminated the QE interaction played an important role on epistatic effect. Identification and comparison of QTLs for yield traits in DH and RILs populations should provide various and more precise information. The QTLs identified in present study would be valuable in marker-assisted selection program for improving rice yield.

关键词: RILs , epistics effect , QE interaction , yield

Abstract: Two genetic linkage maps, constructed by DH and RILs populations derived from the same parents, were carried out for the identification and comparison of QTLs controlling yield traits across different years in rice (Oryza sativa L.). A total of 194 SSR and STS markers were used in two maps, of which 114 markers were same. The distribution of Samgang allele was higher in RILs population than it in DH population. Comparing with DH population, RILs population has more lines with higher yield and wider phenotypic transgressive segression for yield traits. Although most of QTLs for the same trait were different in two populations across different years, 8 QTLs (including gwp11.1, spp5.1, spp10.1, spp11.2, ssr1.1, ssr11.1, tgw9.1 and tgw11.1) were detected over 2 yr. It is important to note that ppp10.1, spp10.1 and tgw9.1 were identified in two populations, while spp10.1 and tgw9.1 were simultaneity observed across different years. Epistatic effects were more important than additive effects for PPP, SPP, yield in DH population and TGW, yield in RILs population. Epistatic effects of DH and RILs populations were different on the same genetic background in the present study, which illuminated the QE interaction played an important role on epistatic effect. Identification and comparison of QTLs for yield traits in DH and RILs populations should provide various and more precise information. The QTLs identified in present study would be valuable in marker-assisted selection program for improving rice yield.

Key words: RILs , epistics effect , QE interaction , yield