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Genetic analysis of methionine content in indica-japonica hybrid rice (Oryza sativa L.) at different grain developmental stages

文献类型： 外文期刊

作者： Zhang, XM 1 ; Shi, CH 2 ; Yue, SH 2 ; Wu, JG 2 ; Bao, GL 2 ;

作者机构： 1.Zhejiang Univ, Coll Agr & Biotechnol, Hangzhou 310027, Peoples R China

2.Zhejiang Univ, Coll Agr & Biotechnol, Hangzhou 310027, Peoples R China; Zhejiang Acad Agr Sci, Inst Crop Res & Atom Energy Utilizat, Hangzhou, Peoples R China

关键词： conditional genetic variance;developmental genetics;genetic variance;heritability;indica japonica hybrid rice;quality;methionine content

期刊名称：EUPHYTICA （ 影响因子：1.895； 五年影响因子：2.181 ）

ISSN： 0014-2336

年卷期： 2004 年 139 卷 3 期

页码：

收录情况： SCI

摘要： Genetics of methionine content in indica japonica hybrid rice (Oryza sativa L.) was studied in 35 F, hybrids derived from crossing 7 male-sterile indica rice cultivars with 5 restorer japonica rice cultivars. Two genetic models and their corresponding statistical methods for quantitative traits of triploid endosperm in cereal crops were used for the analysis. One is the unconditional model, which refers to the analysis of cumulative measurements along the developmental stages, while another is the conditional model, which relates to analysis throughout the developmental stages. Results showed that methionine content of indica japonica hybrid rice was controlled by expression of triploid endosperm nuclear genes, cytoplasm genes, diploid maternal plant nuclear genes, and their genotype-environment interaction effects. Dominant effects were important at the first three developmental stages, while additive effects were important at the next two stages of grain development under both unconditional and conditional analyses. With regard to the components of heritability, maternal and cytoplasm general heritabilities and their environmental interaction heritabilities were important. It was suggested that enhancing methionine content could be more efficient when selection is based on maternal plants in early breeding generations.

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[1]Analysis of developmental genetics for phenylalanine content in indica-japonica hybrid rice (Oryza sativa L.) across environments. Zhang, X. M.,Shi, C. H.,Wu, J. G.,Yue, S. H.,Qi, Y. B.. 2006

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