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Theoretical and Applied Genetics

, Volume 100, Issue 2, pp 280–284 | Cite as

QTL mapping for the paste viscosity characteristics in rice (Oryza sativa L.)

  • J. S. Bao
  • X. W. Zheng
  • Y. W. Xia
  • P. He
  • Q. Y. Shu
  • X. Lu
  • Y. Chen
  • L. H. Zhu
Original paper

Abstract 

In order to understand the genetic basis of the paste viscosity characteristics (RVA profile, which is tested on the Rapid Visco Analyser) of the rice grain, we mapped QTLs for RVA profile parameters using a DH population derived from a cross between an indica variety, Zai-Ye-Qing 8 (ZYQ8), and a japonica variety, Jing-Xi 17 (JX17). Evidence of genotype-by-environment interaction was found by comparing the mapped QTLs between two locations, Hainan (HN) and Hangzhou (HZ). A total of 20 QTLs for six parameters of the RVA profiles were identified at least one location. Only the waxy locus (wx) located on chromosome 6 was detected significantly at both environments for five traits, i.e. hot paste viscosity (HPV), cool paste viscosity (CPV), breakdown viscosity (BDV), consistency viscosity (CSV) and setback viscosity (SBV). This locus explained 19.5%–63.7% of the total variations at both environments, suggesting that the RVA profiles were mainly controlled by the wx gene. HPV, CPV, BDV, CSV and SBV were also controlled by other QTLs whose effects on the respective parameter were detected only in one environment, while for the peak viscosity (PKV), only 2 QTLs, 1 at HN,the other at HZ, were identified. These results indicate that RVA profiles are obviously affected by environment.

Key words Rice Paste viscosity characteristics Rapid Visco Analyser (RVA) Quantitative trait locus (QTL) Doubled haploid (DH) population 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • J. S. Bao
    • 1
  • X. W. Zheng
    • 2
  • Y. W. Xia
    • 1
  • P. He
    • 2
  • Q. Y. Shu
    • 1
  • X. Lu
    • 3
  • Y. Chen
    • 2
  • L. H. Zhu
    • 2
  1. 1.Institute of Nuclear Agricultural Sciences, Zhejiang University, Huajiachi, Hangzhou 310029, ChinaCN
  2. 2.Institute of Genetics, Chinese Academy of Sciences, Beijing, 100101, China Fax: +86-10-64873428 e-mail: lhzhu@ss10.igtp.ac.cnCN
  3. 3.Central Laboratory, Shandong Academy of Agricultural Sciences, Jinan, Shandong 250100, ChinaCN

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