Genetic effects on grain characteristics of indica black rice and their uses on indirect selections for some mineral element contents in grains
文献类型: 外文期刊
作者: Zhang, MW 1 ; Guo, BJ 2 ; Peng, ZM 3 ;
作者机构: 1.Guangdong Acad Agr Sci, Biotech Res Inst, Guangzhou 51640, Peoples R China
2.S China Normal Univ, Coll Life Sci, Guangzhou 510631, Peoples R China
3.Huazhong Agr Univ, Dept Agron, Wuhan 430070, Peoples R China
关键词: black rice;genetic correlation;genetic effect;grain characteristic;mineral element content;Oryza sativa
期刊名称:GENETIC RESOURCES AND CROP EVOLUTION ( 影响因子:1.524; 五年影响因子:1.713 )
ISSN: 0925-9864
年卷期: 2005 年 52 卷 8 期
页码:
收录情况: SCI
摘要: Complete diallel crosses with Oryza sativa L., six varieties of black rice and one variety of aromatic white rice were conducted to study the seed, maternal and cytoplasmic genetic effects on grain characteristics such as 100-grain weight, length, width and shape and their genetic correlations with Fe, Zn, Mn and P mineral contents in kernels by using the genetic model on quantitative traits of seed in parents and their F(1)s and F(2)s. The seed genetic effects were found more important than the maternal genetic effects for grain characteristics, and seed additive effects constituted a major part of their genetic effects. The heritabilities of seed effects were high for 100-grain weight, width and shape and moderate for grain length. Single seed selection based on the 100-grain weight, width and shape was advocated in early generations, whereas single plant and seed selection based on grain length were advocated in late generations. Significant genetic correlations including seed additive, dominance, cytoplasmic, maternal additive and dominance between 100-grain weight, length, width and shape and Fe, Zn, Mn and P mineral contents were observed. Indirect selection of grain characteristics may be one of the breeding methods to select for higher contents of Fe, Zn, Mn and P in black pericarp indica rice.
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Genetic effects on Fe, Zn, Mn and P contents in Indica black pericarp rice and their genetic correlations with grain characteristics
作者:Zhang, MW;Guo, BJ;Peng, ZM
关键词:black pericarp rice;genetic correlation;genetic effect;grain characteristic;mineral element content