{'fraction_non_alphanumeric': 0.017580144777662874, 'fraction_numerical': 0.002068252326783868, 'mean_word_length': 5.368421052631579, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Genetic diversity and structure of Sinopodophyllum hexandrum populations in the Tibetan region of Qinghai-Tibet plateau, China

Sinopodophyllum hexandrum is a perennial herb with medicinal value for local Tibetans living in the Qinghai-Tibet Plateau (QTP), China. The species has been classified as endangered in the Chinese Plant Red Book because of the decline of wild resources and lack of artificial cultivation. For the conservation of resources in the Tibetan region of QTP, the genetic diversity and structure of S. hexandrum distributed in this area were investigated based on nuclear microsatellite molecular markers. All populations showed low genetic diversity. Genetic differentiation occurred mainly among populations JCX, MTS, and 10 others on Tibetan region of the QTP. Such genetic differentiation pattern might have been due to geographic isolation and lack of pollination in QTP. The strategies for conservation based on these results are suggested.