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携带越光基因组片段的染色体片段代换系的构建及产量相关性状评价

Development of chromosome segment substitution lines harboring genomic segments in Koshihikari and evaluation of yield-related traits.

作者信息

Furuta Tomoyuki, Uehara Kanako, Angeles-Shim Rosalyn B, Shim Junghyun, Nagai Keisuke, Ashikari Motoyuki, Takashi Tomonori

机构信息

Bioscience and Biotechnology Center, Nagoya University , Chikusa, Nagoya, Aichi 464-8601 , Japan.

STAY GREEN Co., Ltd. , 2-1-5 Kazusa-Kamatari, Kisarazu, Chiba 292-0818 , Japan.

出版信息

Breed Sci. 2016 Dec;66(5):845-850. doi: 10.1270/jsbbs.16131. Epub 2016 Dec 6.

Abstract

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. is a wild relative of rice that is thought to be a progenitor of spp. . In the present study, 26 CSSLs that covers the entire genome of as contiguous, overlapping segments in the genomic background of a cultivar, 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 as a source of novel alleles that can be used to improve the existing cultivar.

摘要

染色体片段代换系(CSSLs)是丰富的遗传资源,可用于挖掘新的、具有农业利用价值的基因座,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,已经培育出了许多水稻染色体片段代换系,以此来挖掘野生等位基因在水稻改良中的潜力。[具体物种名称1]是水稻的野生近缘种,被认为是[具体物种名称2]的祖先。在本研究中,构建了26个染色体片段代换系,这些代换系以粳稻品种越光为基因组背景,包含了[具体物种名称1]的整个基因组,以连续、重叠的片段形式存在。对这些染色体片段代换系的几个重要农艺性状进行评估,确定了含有与产量及产量相关性状的数量性状基因座(QTL)的候选染色体片段。研究结果揭示了[具体物种名称1]作为新等位基因来源的潜力,可用于改良现有的粳稻品种。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ff9a/5282765/40fb4991acbe/66_16131_1.jpg

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