全基因组关联分析馒头比容与质构SNP标记.DOC

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1、全基因组关联分析馒头比容与质构 SNP 标记 刘娟 1 陈广凤 2 田纪春 3 吴澎 1 赵子彤 1 杨艺 1 李向阳 1 唐晓珍 1 (山东省高校食品加工技术与质量控制重点实验室 ; 山东农业大学食品学院 1,泰安 271018) (德州学院生态与景观学院 2,德州 253023) (山东农业大学小麦品质育种研究室 ; 山东省作物生物学重点实验室 3,泰安 271018) 摘 要 为 从分子水平研究 控制馒头比容与质构性状的基因位点,以 205 份不同小麦品种为实验材料,利用分布于小麦全基因组的 24 355个单核苷酸多态性( SNP)标记对馒头比容与质构性状进行关联分析。共检测到 42 个

2、比容性状显著关联位点,其中 8 个极显著关联位点( P10%), 2 个位点 至少在两个环境中稳定表达; 检测到 313 个质构性状显著关联位点, 其中 31 个极显著关联位点, 46个高遗传贡献率位点, 11个位点 至少在两个环境中稳定表达。同时,发掘了 5个质构性状 主效关联位点 ,如 3B 染色体上黏聚性关联位点 Kukri_c13329_800 等 。 本 研究 所得到的这些标记为在分子水平上研究馒头 品质 性状提供了有价值的参考。 关键词 馒头 比容 馒头 质构 单核苷酸多态性标记 全基因组关联分析 显著关联位点 中图分类号: TS201.1 文献标识码 : A Genome-Wid

3、e Association Analysis between SNP Markers and Specific volume and Texture Related Traits of Steamed Bread LIU Juan1, CHEN Guangfeng2, TIAN Jichun3, WU Peng1*, ZHAO Zitong1, YANG Yi1, LI Xiangyang1, TANG Xiaozhen1 (Key Laboratory of Food Processing Technology and Quality Control in Shandong Province

4、; College of Food Science and Engineering, Shandong Agricultural University 1, Taian 271018) (College of Ecology and Landscape Architecture, Dezhou University 2, Dezhou 253023) (State Key Laboratory of Crop Biology; Group of Quality Wheat Breading, Shandong Agricultural University 3, Taian 271018) A

5、bstract In order to study the gene loci that control specific volume and texture of steamed bread, 205 diverse wheat varieties were used to conduct trait-markers association using 24 355 single nucleotide polymorphism (SNP) markers covered the whole genome of wheat. In the results, 42 significant ma

6、rkers were detected for specific volume of steamed bread distributed across 7 chromosomes of wheat, including 8 highly significant markers (P10%), 2 markers detected in two or more environment. 313 significant markers were detected for texture traits of steamed bread mapped onto 15 chromosomes of wh

7、eat, including 31 highly associated markers(P10%),2 个相对稳定位点(在两个及以上环境中表达),分布于小麦的 2A、 2B、 2D、 3A、 4B、 6B、7A染色体上。位于 4B染色体上的极显著关联位点 Tdurum_contig4974_355遗传贡献率最大,可解释 17.10%的表型变异,但只在 E4 环境中检测到(表 3)。 四个环境下共检测到 313 个质构性状显著关联位点,分布于小麦的 17 条染色体上, 单个位点表型变异贡献率为 5.49 25.14%。其中 31 个极显著( P10%),分布于小麦的 15 条染色体上。 同时,检

8、测到 5 个质构性状 主效关联位点。本实验所得到的这些标记对 从分子水平深入研究 小麦粉的品质性状具有重要意义,并为小麦分子育种提供一定 参考 。 参考文献 1 魏春红,李春辉,鹿保鑫,等 . 不同粒度小米粉性质及对馒头品质的影响 J. 粮食与油脂, 2017, 30(07):65-68 WEI Chunhong, LI Chunhui, LU Baoxin, et al. Characteristics of millet flour with different size and its influence on the quality of steamed breadJ. Cereals

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