Population Genetic Diversity and Species Distribution Evaluation of Bletilla striata (Orchidaceae) in Southwest China Using SSR Markers.

ABSTRACT: We assessed the genetic diversity and population structure of the protected orchid Bletilla striata across 18 wild populations in southwestern China. Eight pairs of simple sequence repeat (SSR) molecular markers were employed for its genetic diversity and population structure analyses, while the optimized Maxent model was utilized to predict changes in the habitat distribution under historical conditions and three future climate scenarios (SSP126, SSP245, and SSP585) with 141 natural distribution data and 19 climatic factors. The results revealed an average number of alleles (Na) of 3.549 and an effective number of alleles (Ne) of 2.636, with a mean polymorphic information content (PIC) of 0.748 across the B. striata populations. Moderate genetic diversity was observed (observed heterozygo

SUBMITTER: Luo L 

PROVIDER: S-EPMC12362183 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature