上饶师范学院生命科学学院,江西 上饶 334001;,上饶师范学院生命科学学院,江西 上饶 334001;,上饶师范学院生命科学学院,江西 上饶 334001;,上饶师范学院生命科学学院,江西 上饶 334001;,上饶师范学院生命科学学院,江西 上饶 334001;,上饶师范学院生命科学学院,江西 上饶 334001;,上饶市红日农业开发有限公司,江西 上饶 334700,上饶市红日农业开发有限公司,江西 上饶 334700
上饶师范学院2017年大学生创新创业训练计划项目(2017-CX-73)
College of Life Sciences, Shangrao Normal University, Shangrao 334001, Jiangxi ;,College of Life Sciences, Shangrao Normal University, Shangrao 334001, Jiangxi ;,College of Life Sciences, Shangrao Normal University, Shangrao 334001, Jiangxi ;,College of Life Sciences, Shangrao Normal University, Shangrao 334001, Jiangxi ;,College of Life Sciences, Shangrao Normal University, Shangrao 334001, Jiangxi ;,College of Life Sciences, Shangrao Normal University, Shangrao 334001, Jiangxi ;,Shangrao red sun Agricultural Development Co., Ltd., Shangrao 334700, Jiangxi,Shangrao red sun Agricultural Development Co., Ltd., Shangrao 334700, Jiangxi
本文对我国三叶青种质资源64个样本的遗传多样性进行SRAP分析。结果表明,从30条引物中筛选出10条条带清晰、重复性好的引物对64份供试材料的基因组DNA 进行扩增.扩增出了57个多态位点,多态百分数为66.67%-100%,平均多态百分数为90.38%,引物EM3ME3扩增得到的多态位点最多,为 10个;引物EM2ME2、EM6ME6和EM17ME17扩增得到的多态位点最少,为4个,10条引物扩增得到的多态位点平均为5.7个;遗传多样性分析显示,平均检测等位基因数(Na)为1.9038,平均有效等位基因数(Ne)为1.51501,64个样本的平均Nei’s 基因多样性指数(H)为0.3009,平均Shannon 多样性指数(I)为0.45259。64个样本遗传相似系数的变异范围为0.4603-0.9206。根据相似系数矩阵按 UPGMA 法进行聚类,在遗传相似性系数为0.7256处,64份供试材料可分为了9组;在江西三叶青种质中,既可与湖北、湖南、福建、广西等地三叶青种质聚为一类,也可与浙江三叶青种质聚为一类。这种现象说明,江西是三叶青遗传多样性起源中心或许是三叶青各类种源的过渡区;另外,根据 10 个SRAP引物的扩增结果,筛选出引物EM3ME3、EM13ME13和EM14ME14扩增的DNA 指纹图谱可用于供试 64个三叶青种质的鉴定。本实验结果可为我国三叶青种质资源的评价、鉴定和新品种选育提供参考。
In this study, the genetic diversity of 64 Chinese Tetrastigma hemsleyanum Diels et Gilg germplasm accessions was analyzed by SRAP markers. By screening for polymorphism, ten out of 30 primer combinations generated reproducible fragments and they were used for additional diversity analysis in 64 genotypes. Fifty-seven polymorphic loci were amplified, with a polymorphic percentage of 66.67%-100% (mean, 90.38%). Each primer combination could generate 4-10, with a mean of 5.7. The average alleles (Na), the average effective allele number (Ne), the average Nei ''s gene diversity index (H) and the average Shannon diversity index (I) of 64 samples were 1.9038, 1.51501, 0.3009 and 0.45259, respectively. The genetic similarity coefficient ranged from 0.4603 to 0.9206. By UPGMA clustering, 64 samples were divided to 9 groups when the genetic similarity coefficient was 0.7256. Notably, several accessions collected from Jiangxi were clustered into group of accessions in Hubei, Hunan, Fujian and Guangxi, and several accessions could be clarified into group in Zhejiang. That indicated that Jiangxi may be the center or the transition zone of genetic diversity of Tetrastigma hemsleyanum Diels et Gilg germplasm resources. In addition, we constructed the fingerprints of 64 genotypes by using primers EM3ME3, EM13ME13 and EM14ME14. The dataset might provide reference in evaluation and identification of Tetrastigma hemsleyanum Diels et Gilg germplasm resources, and also breeding for new varieties .
尹明华,石光禹,郁雪婷,等.三叶青种质资源遗传多样性的SRAP分析[J].植物遗传资源学报,2018,19(6):1222-1228.
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