Genetic Diversity Analysis of Caragana stenophylla Pojark in Inner Mongolia Plateau
The genetic diversity and genetic structure of Caragana stenophylla Pojark populations distributed naturally in Inner Mongolia Plateau were analyzed by SSR markers.The results showed that 14 SSR primers amplified 156 polymorphisms bands among the 8 C.stenophylla populations.Nei's genetic and Shannon diversity index were 0.2100 and 0.3436.Genetic diversity among 8 Caragana stenophylla Pojark populations was 0.2100,while within 8 populations was 0.1454,Nei's genetic differentiation(Gst) was 0.3074.Gene flow among populations was 1.1264,30.88％ genetic differentiation occurred among populations,while 69.12％ occurred within populations.the 8 populations were clustered into four main groups with UPGMA methods,in which genetic similarity coefficient was 0.93.The genetic distance had no relationship with geographic distance according to Mantel test.In stepwise regression analysis,the average temperature was significantly correlated with effective allele and its interpretation extent was 86.40％.Nei's gene diversity index was significantly correlated with average temperature,0～20cm soil total phosphorus and 20～30cm soil total carbon,with explanation of 90.20％,96.60％,95.50％ respectively.Shannon diversity index was significantly correlated with average temperature,0～20cm soil total phosphorus and 20～30cm soil total carbon,with explanation of 90.00％,96.60％,99.7％ respectively.Percentage of polymorphic loci was significantly correlated with average temperature,0 ～ 20cm soil total phosphorus with explanation of 96.60％,90.80％ respectively.
NETL
NSTL
万方数据
维普
