期刊论文

Fine-scale genetic structure of Medicago ruthenica Trautv

中文

植物科学学报

2095-0837

2020

38

5

663-670

10.11913/PSJ.2095-0837.2020.50663

31000147:国家自然科学基金 55Y755271G02:中国科学院武汉植物园人才部署专项

本校为其他机构

以花苜蓿(Medicago ruthenica Trautv.)为材料,在内蒙古克什克腾旗建立两个25 m × 50 m的样方(山谷YF1和山坡YF2),采集该范围内的所有个体,利用8对SSR分子标记对其遗传变异特性进行分析。结果显示,克什克腾旗花苜蓿居群遗传多样性较高。两个居群个体的空间自相关分析结果表明,9 m内的个体间为非随机邻近交配,且在同距离范围内,山谷居群的个体间遗传相似性更低,推测此区域可能是历史和地理因素塑造了花苜蓿丰富的遗传多样性,两个小尺度空间格局的个体间基因流模式主要受地形影响。

We established two quadrats (25 m × 50 m)in a valley (YF1)and on a hillside (YF2)in Keshiketeng Banner,Inner Mongolia.We sampled all Medicago ruthenica Trautv.individuals in the quadrats by fine-scale methods and characterized their genetic variation using eight pairs of simple sequence repeat (SSR)primers.We found that M.ruthenica had a high level of genetic diversity.Based on spatial autocorrelation,the individuals showed non-random adjacent mating at an interval of 9 m.At the same interval,we found lower genetic similarity in the YF1 popula...