长白山阔叶红松林稠李居群遗传结构的空间自相关分析  

Spatial autocorrelation of genetic structure of Prunus padus population in broadleaved Korean pine forest of Changbai Mountains

作　　者：牛小敏[1,2] 师帅[1,2] 王峥峰[3] 叶万辉[3] 郝占庆[1] 

机构地区：[1]中国科学院沈阳应用生态研究所森林与土壤生态国家重点实验室,沈阳110164 [2]中国科学院大学,北京100049 [3]中国科学院华南植物园,广州510650

出　　处：《应用生态学报》2014年第2期305-310,共6页Chinese Journal of Applied Ecology

基　　金：中国科学院知识创新工程重要方向性项目(KSCX2-EW-Z);国家自然科学基金项目(31300517;31100447)资助

摘　　要：以长白山阔叶红松林25 hm2样地为平台,选取样地中胸径≥1 cm的稠李个体共计396株,将其分为1～3、3～10和〉10 cm 3个径级,通过微卫星标记对这些个体进行了空间遗传结构的空间自相关分析.结果表明： 样地中的稠李种群总体上具有一定的空间特征,在70 m范围内呈显著正相关, 110 m外则呈负相关.不同年龄级的个体空间遗传结构相似, 且主要源于有限的花粉和种子扩散距离.该稠李居群未出现明显的自疏现象.All 396 Prunus padus individuals of the population with DBH （diameter at breast height） ≥1 cm were sampled in a 25 hm2 broadleaved Korean pine forest plot of Changbai Mountains and divided into three DBH classes： 1-3 cm, 3-10 cm, and 〉10 cm. They were then genotyped using microsatellite loci. The spatial autocorrelation of their genetic structure was analyzed at different distance classes and life stages. The results showed that positive autocorrelation mainly occurred at scales less than 70 m, while negative autocorrelation occurred at scales larger than 110 m. The spatial genetic structure （SGS） at different life stages was similar due to limited pollen/seed dispersal and asexual reproduction. No significant self-thinning occurred in the studied population.

关 键 词：稠李 微卫星标记 空间自相关分析 空间遗传结构 

分 类 号：S792.99[农业科学—林木遗传育种]