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Journal of Zhejiang University SCIENCE A 2004 Vol.5 No.4 P.371-377

http://doi.org/10.1631/jzus.2004.0371


Analysis of digenic epistatic effects and QE interaction effects QTL controlling grain weight in rice


Author(s):  GAO Yong-ming, ZHU Jun, SONG You-shen, HE Ci-xin, SHI Chun-hai, XING Yong-zhong

Affiliation(s):  Agronomy Department, Zhejiang University, Hangzhou 310029, China; more

Corresponding email(s):   jzhu@zju.edu.cn

Key Words:  Immortalized F2 population, Rice, Kilo-grain weight, QTL, Epistasis, QTL ×, environment


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GAO Yong-ming, ZHU Jun, SONG You-shen, HE Ci-xin, SHI Chun-hai, XING Yong-zhong. Analysis of digenic epistatic effects and QE interaction effects QTL controlling grain weight in rice[J]. Journal of Zhejiang University Science A, 2004, 5(4): 371-377.

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author="GAO Yong-ming, ZHU Jun, SONG You-shen, HE Ci-xin, SHI Chun-hai, XING Yong-zhong",
journal="Journal of Zhejiang University Science A",
volume="5",
number="4",
pages="371-377",
year="2004",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2004.0371"
}

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%T Analysis of digenic epistatic effects and QE interaction effects QTL controlling grain weight in rice
%A GAO Yong-ming
%A ZHU Jun
%A SONG You-shen
%A HE Ci-xin
%A SHI Chun-hai
%A XING Yong-zhong
%J Journal of Zhejiang University SCIENCE A
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%P 371-377
%@ 1869-1951
%D 2004
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2004.0371

TY - JOUR
T1 - Analysis of digenic epistatic effects and QE interaction effects QTL controlling grain weight in rice
A1 - GAO Yong-ming
A1 - ZHU Jun
A1 - SONG You-shen
A1 - HE Ci-xin
A1 - SHI Chun-hai
A1 - XING Yong-zhong
J0 - Journal of Zhejiang University Science A
VL - 5
IS - 4
SP - 371
EP - 377
%@ 1869-1951
Y1 - 2004
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2004.0371


Abstract: 
immortalized F2 population of rice (Oryza sativa L.) was developed by randomly mating F1 among recombinant inbred (RI) lines derived from (Zhenshan 97B × Minghui 63), which allowed replications within and across environments. QTL (quantitative trait loci) mapping analysis on kilo-grain weight of immortalized F2 population was performed by using newly developed software for QTL mapping, QTLMapper 2.0. Eleven distinctly digenic epistatic loci included a total of 15 QTL were located on eight chromosomes. QTL main effects of additive, dominance, and additive × additive, additive × dominance, and dominance × dominance interactions were estimated. Interaction effects between QTL main effects and environments (QE) were predicted. Less than 40% of single effects, most of which were additive effects, for identified QTL were significant at 5% level. The directional difference for QTL main effects suggested that these QTL were distributed in parents in the repulsion phase. This should make it feasible to improve kilo-grain weight of both parents by selecting appropriate new recombinants. Only few of the QE interaction effects were significant. Application prospect for QTL mapping achievements in genetic breeding was discussed.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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