کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5906267 1159967 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
QTL mapping of grain weight in rice and the validation of the QTL qTGW3.2
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی ژنتیک
پیش نمایش صفحه اول مقاله
QTL mapping of grain weight in rice and the validation of the QTL qTGW3.2
چکیده انگلیسی


- QTLs for 1000 grain weight have been mapped in one RIL;
- Two new major QTLs qTGW3.2 and qTGW5 were both detected in two years.
- One major QTLs qTGW3.2 was narrowed to a 556 kb region.
- qTGW3.2 lie to a pleiotropic QTL.

A recombinant inbred line (RIL) population bred from a cross between a javanica type (cv. D50) and an indica type (cv. HB277) rice was used to map seven quantitative trait loci (QTLs) for thousand grain weight (TGW). The loci were distributed on chromosomes 2, 3, 5, 6, 8 and 10. The chromosome 3 QTL qTGW3.2 was stably expressed over two years, and contributed 9-10% of the phenotypic variance. A residual heterozygous line (RHL) was selected from the RIL population and its selfed progeny was used to fine map qTGW3.2. In this “F2” population, the QTL explained about 23% of the variance, rising to nearly 33% in the subsequent “F2:3” generation. The physical location of qTGW3.2 was confined to a ~ 556 kb region flanked by the microsatellite loci RM16162 and RM16194. The region also contains other factors influencing certain yield-related traits, although it is also possible that qTGW3.2 affects these in a pleiotropic fashion.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Gene - Volume 527, Issue 1, 15 September 2013, Pages 201-206
نویسندگان
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