Identification of quantitative trait loci for seed storability in rice (Oryza sativa L.)

被引：51

作者：

Xue, Y. ^{[1
]}

Zhang, S. Q. ^{[2
]}

Yao, Q. H. ^{[1
]}

Peng, R. H. ^{[1
]}

Xiong, A. S. ^{[1
]}

Li, X. ^{[1
]}

Zhu, W. M. ^{[3
]}

Zhu, Y. Y. ^{[3
]}

Zha, D. S. ^{[3
]}

机构：

[1] Shanghai Acad Agr Sci, Biotech Res Inst, Shanghai Key Lab Agr Genet Breeding, Shanghai 201106, Peoples R China

[2] Suzhou Polytech Inst Agr, Suzhou 215008, Jiangsu Prov, Peoples R China

[3] Shanghai Acad Agr Sci, Hort Res Int, Shanghai Key Lab Facil Hort, Shanghai 201106, Peoples R China

来源：

EUPHYTICA | 2008年 / 164卷 / 03期

关键词：

Chromosome segment substitution lines (CSSLs); QTL analysis; Recombinant inbred lines (RILs); Rice (Oryza sativa L.); Seed storability;

D O I：

10.1007/s10681-008-9696-3

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

In the present study, quantitative trait loci (QTLs) controlling seed storability based on relative germination rate (%) were dissected using a saturated linkage map and a recombinant inbred lines (RILs) derived from a cross of japonica cultivar Asominori (Oryza sativa L.) and indica cultivar IR24 (Oryza sativa L.). A total of three QTLs (qRGR-1, qRGR-3 and qRGR-9) were detected on chromosomes 1, 3 and 9 with LOD score ranging from 3.45 to 6.95 and the phenotypic variance explained from 16.72% to 28.63%. The IR24 alleles were all associated with seed storability at all the three QTLs. The existence of these QTLs was confirmed using IR24 chromosome segment substitution lines (CSSLs) in Asominori genetic background (AIS). By QTL comparative analysis, the QTL, qRGR-9 on chromosomes 9 appeared to be consistent with another rice population, this region may provide an important region for isolating this responsible gene. These results also provide the possibilities of enhancing Seed storability in rice breeding program by marker-assisted selection (MAS) and pyramiding QTLs.

引用

页码：739 / 744

页数：6

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