首页|青稞遗传多样性及其农艺性状与SSR标记的关联分析

青稞遗传多样性及其农艺性状与SSR标记的关联分析

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为了解不同地区青稞材料的遗传多样性,挖掘与农艺性状相关的标记,该研究利用92对SSR标记分析来自甘肃和西藏不同地区的102份青稞材料的遗传多样性和群体遗传结构,并利用Tassel 2.1软件的GLM模型进行SSR标记与农艺性状的关联分析.结果表明,92对标记共扫描鉴定出739个等位基因,基因多样性指数变幅为0.106～0.913,多态性信息含量变幅为0.103～0.907;遗传相似系数变幅为0.680～0.960,聚类分析将这些青稞材料分为2个亚群,具有相同亲本或亲缘关系相近的材料聚在一起;群体遗传结构分析把青稞材料分为5个亚群;鉴定出33个标记与9个农艺性状在P＜0.01水平上极显著关联,与千粒重相关的标记有10个,其中标记GBM1238较为稳定,这些标记的表型变异解释率为8.95％～35.02％.综上,该研究大部分供试青稞材料的亲缘关系相近,可以引进不同的青稞遗传资源来丰富遗传背景.
Genetic diversity and association analysis between agronomic traits and SSR markers in hul-less barley
In order to understand the genetic diversity of hulless barley germplasms from different regions and to dis-cover markers associated with agronomic traits.In this study,we analyzed the genetic diversity and population genet-ic structure of 102 hulless barley germplasms from different regions of Gansu and Xizang using 92 pairs of SSR mark-ers,and the association analysis between SSR markers and agronomic traits was carried out by using the GLM model of Tassel 2.1 software.The results showed that a total of 739 alleles were identified by scanning 92 markers,and the variance of gene diversity index ranged from 0.106 to 0.913,the variance of polymorphism information content ranged from 0.103 to 0.907;the genetic similarity coefficient varied from 0.680 to 0.960,and the clustering analy-sis divided these hulless barley germplasms into two subgroups,germplasms with the same parentage or similar kin-ship were clustered together;the population genetic structure analysis divided the hulless barley germplasms into five subgroups;it was revealed that more than 9 agronomic traits of 33 markers were extremely remarkalbe at the P＜0.01 level,there were 10 markers associated with thousand grain weight,of which the marker GBM1238 was more stable,and the explained rate of the phenotypic variance of these markers ranged from 8.95％to 35.02％.In conclusion,most of the hulless barley germplasms for the test in this study are similarly related,and different hulless barley ge-netic resources can be introduced to enrich the genetic background.

hulless barleySSRagronomic traitgenetic diversityassociation analysis

张元元、冯举伶、肖婧凤、关宇、龙楚儿、姚立蓉、孟亚雄、司二静、李葆春、马小乐、王化俊、周喜荣、刘梅金、汪军成

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省部共建干旱生境作物学国家重点实验室/甘肃省作物遗传改良与种质创新重点实验室,甘肃兰州 730070

甘肃农业大学农学院,甘肃兰州 730070

甘肃农业大学生命科学技术学院,甘肃兰州 730070

甘南藏族自治州农业科学研究所,甘肃合作 747000

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青稞 SSR 农艺性状 遗传多样性 关联分析

国家现代农业产业技术体系项目甘肃省科技厅科技计划-科技特派团专项甘肃省科技厅科技计划-科技特派团专项甘肃省高等学校产业支撑计划项目甘肃农业大学伏羲青年英才计划甘肃农业大学伏羲青年英才计划甘南州科技计划项目甘肃省科技重大专项甘肃农业大学大学生创新创业训练计划

CARS-05-04B-222CX8NA04722CX8NP2482021CYZC-12Gaufx-03Y06Gaufx-04Y0112022JY1NC00117ZD2NA016202401042

2024

10.3969/j.issn.1004-1524.20231050

浙江农业学报
浙江省农业科学院 浙江省农学会

浙江农业学报

CSTPCD北大核心
影响因子：0.765
ISSN：1004-1524
年,卷(期)：2024.36(9)