Development of chromosome segment substitution lines harboring Oryza nivara genomic segments in Koshihikari and evaluation of yield-related traits.
Development of chromosome segment substitution lines harboring Oryza nivara genomic segments in Koshihikari and evaluation of yield-related traits.
复制标题
在Koshihikari中具有Oryza Nivara基因组段的染色体段替代线的开发以及与产量相关性状的评估。
DOI：
10.1270/jsbbs.16131
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发表时间：
2016-12
期刊：
影响因子：
2.4
通讯作者：
Takashi T
中科院分区：
文献类型：
--
作者：
Furuta T;Uehara K;Angeles-Shim RB;Shim J;Nagai K;Ashikari M;Takashi T
染色体片段代换系（CSSLs）是一种丰富的遗传资源，可用于发掘新的、农业上有用的位点或直接用作育种材料。迄今为止，通过将水稻品种与其野生近缘种杂交，已经开发了许多水稻CSSLs，以挖掘野生等位基因在水稻改良中的潜力。Oryza nivara是水稻的野生近缘种，被认为是O。青花菜indica。在本研究中，26个CSSLs，涵盖了整个基因组的O。nivara作为连续的，重叠的片段在基因组背景的一个粳稻品种，O。青花菜Koshihikari是开发的。对几个农业上重要性状的CSSLs的评估确定了携带与产量和产量相关性状相关的QTL的候选染色体片段。研究结果揭示了O. nivara作为新等位基因的来源，可用于改进现有的日本栽培品种。
Chromosome segment substitution lines (CSSLs) are rich genetic resources that can be mined for novel, agriculturally useful loci or that can be used directly as materials for breeding. To date, a number of rice CSSLs have been developed by crossing rice cultivars with its wild relatives as a means to tap into the potential of wild alleles in rice improvement. Oryza nivara is a wild relative of rice that is thought to be a progenitor of O. sativa spp. indica. In the present study, 26 CSSLs that covers the entire genome of O. nivara as contiguous, overlapping segments in the genomic background of a japonica cultivar, O. sativa cv. Koshihikari were developed. Evaluation of the CSSLs for several agriculturally important traits identified candidate chromosome segments that harbors QTLs associated with yield and yield-related traits. The results of the study revealed the potential of O. nivara as a source of novel alleles that can be used to improve the existing japonica cultivar.