Breeding of a target genotype variety based on identified chalkiness marker-QTL associations in rice (Oryza sativa L.)
文献类型： 外文期刊
作者： Liu, X. 1 ; Du, Y. R. 1 ; Li, X. H. 1 ; Li, X. L. 4 ; Yang, W. Q. 1 ; Wang, Y. 2 ;
作者机构： 1.Tianjin Univ Sci & Technol, Minist Educ, Key Lab Food Nutr & Safety, Tianjin, Peoples R China
2.Nankai Univ, Coll Life Sci, Dept Plant Biol & Ecol, Tianjin 300071, Peoples R China
3.Tianjin Gasin Donghui Preservat Technol Co Ltd, Tianjin, Peoples R China
4.Natl Engn & Technol Res Ctr Preservat Agr Prod, Tianjin, Peoples R China
关键词： Rice;Breeding by design;Chalkiness;QTLs;Molecular marker;Target genotype variety
期刊名称：GENETICS AND MOLECULAR RESEARCH （ 影响因子：0.764； 五年影响因子：0.912 ）
ISSN： 1676-5680
年卷期： 2015 年 14 卷 4 期
页码：
收录情况： SCI
摘要： The aim of this study was to breed a target genotype variety based on the identified chalkiness marker-QTL (quantitative trait locus) associations in rice. First, a permanent mapping population of rice that consisted of 525 recombinant inbred lines (RILs), which were derived from Zhenshan 97/Minghui 63, was used to identify QTLs with additive effects for rice quantitative traits and percentage of grain chalkiness (PGC). Subsequently, based on the identified QTLs in rice, the molecular marker 68923-PGC was selected to screen the low chalkiness rice line. Then, using the integration of molecular marker breeding and traditional breeding, we analyzed the genotype and phenotype of inbred lines from 525 RILs; we identified one rice variety with particularly high yields, good taste, and broad adaptability. The new variety was temporarily named RIL10, which was a high quality, high yield, and broadly adaptable variety, and it is predominantly a feature that has contributed to its geographical adaptability, which would be planted from 35 degrees E to 18 degrees E in Chinain China, where 2/3 of rice production occurs. RIL10 was a marker-assisted selection breeding achievement for producing a high quality, high yield, and broadly adaptable rice variety.
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