Variation in heading date conceals quantitative trait loci for other traits of importance in breeding selection of rice.
Variation in heading date conceals quantitative trait loci for other traits of importance in breeding selection of rice.
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DOI：
10.1270/jsbbs.62.223
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发表时间：
2012-09
期刊：
影响因子：
2.4
通讯作者：
Yano M
中科院分区：
文献类型：
--
作者：
Hori K;Kataoka T;Miura K;Yamaguchi M;Saka N;Nakahara T;Sunohara Y;Ebana K;Yano M
为了确定与水稻育种实践中选择的主要目标性状相关的数量性状基因座（QTL），在日本全国6个试验田对温带粳稻品种日本晴和越光杂交获得的回交自交系（BILs）的50个农艺性状进行了评价。50个性状中有33个与抽穗期呈显著相关。利用包含647个单核苷酸多态性（SNPs）的连锁图谱，共定位了38个性状的122个QTL，它们分布在除第5和第9染色体外的所有染色体上。在122个QTL中，有58个QTL位于抽穗期QTL Hd16和Hd17附近，其余64个QTL位于其他染色体区域。QTL分析的51个BILs具有Hd16和Hd17附近的越光染色体片段的纯合，使我们能够检测到40个QTL与27个性状，这些QTL中有23个没有被检测到在原来的分析。在多环境下检测的30个性状的97个QTL中，44个QTL的基因型与环境互作达到显著水平，53个QTL的基因型与环境互作不显著。这些结果使我们提出了一种新的选择策略，以提高温带粳稻品种的农艺性状。
To identify quantitative trait loci (QTLs) associated with the primary target traits for selection in practical rice breeding programs, backcross inbred lines (BILs) derived from crosses between temperate japonica rice cultivars Nipponbare and Koshihikari were evaluated for 50 agronomic traits at six experimental fields located throughout Japan. Thirty-three of the 50 traits were significantly correlated with heading date. Using a linkage map including 647 single-nucleotide polymorphisms (SNPs), a total of 122 QTLs for 38 traits were mapped on all rice chromosomes except chromosomes 5 and 9. Fifty-eight of the 122 QTLs were detected near the heading date QTLs Hd16 and Hd17 and the remaining 64 QTLs were found in other chromosome regions. QTL analysis of 51 BILs having homozygous for the Koshihikari chromosome segments around Hd16 and Hd17 allowed us to detect 40 QTLs associated with 27 traits; 23 of these QTLs had not been detected in the original analysis. Among the 97 QTLs for the 30 traits measured in multiple environments, the genotype-by-environment interaction was significant for 44 QTLs and not significant for 53 QTLs. These results led us to propose a new selection strategy to improve agronomic performance in temperate japonica rice cultivars.
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影响因子：
64.8
作者：
Matsumoto, T;Wu, JZ;Sugiura, M
通讯作者：
Sugiura, M
DOI：
10.1073/pnas.0805303105
发表时间：
2008-08-26
影响因子：
11.1
作者：
Fujino, Kenji;Sekiguchi, Hiroshi;Yano, Masahiro
通讯作者：
Yano, Masahiro
影响因子：
2.4
作者：
Ebana, Kaworu;Yonemaru, Jun-ichi;Yano, Masahiro
通讯作者：
Yano, Masahiro
影响因子：
2.4
作者：
Fujino, Kenji;Sekiguchi, Hiroshi
通讯作者：
Sekiguchi, Hiroshi
影响因子：
2.3
作者：
MACKILL, DJ
通讯作者：
MACKILL, DJ