ArticlePlants (Basel, Switzerland)2025
Genetic Diversity and Population Structure of Shanlan Upland Rice Germplasm Based on SSR Markers.
Article in Plants (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Shanlan upland rice is a unique rice resource of the Li and Miao ethnic group in China and serves as a valuable gene pool adapted to tropical mountainous environments. To explore the genetic relationships of Shanlan upland rice from different geographical origins, 21 SSR markers were used to conduct genetic diversity and population structure analyses on 288 Shanlan upland rice accessions from 10 provinces (regions) in southern China. Results: The study revealed that the mean values of effective allele number (Ne), Shannon's information index (I), polymorphic information content (PIC), observed heterozygosity (Ho), and expected heterozygosity (He) for Shanlan upland rice were 1.616, 0.491, 0.74, 0.129, and 0.306, respectively. Genetic diversity analysis and molecular variance analysis (AMOVA) showed that the main source of variation between materials was the individual Shanlan upland rice plants. Genetic distance and differentiation results revealed the phylogenetic relationships among Shanlan upland rice populations. Both clustering and population structure analyses divided the materials into five subgroups, suggesting that the Shanlan upland rice from Qiongzhong, Hainan, might be the center of genetic diversity for the Hainan Shanlan upland rice, while rice from Dongfang, Hainan, and the inland populations exhibit genetic isolation. This study provides foundational data for the prioritized conservation and innovative utilization of Shanlan upland rice germplasm resources.
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