Ethnobotanical studies on rice landraces under on-farm conservation in Xishuangbanna of Yunnan Province, China

作者：Wang Fei, Tao Sun, Shuai Yu, Chunhui Liu, Zhuo Cheng, Jianxin Xia, Longzhi Han · 发表于：Journal of Ethnobiology and Ethnomedicine · 年份：2024 · DOI：10.1186/s13002-024-00683-y · 被引用次数：10 · 研究领域：GABA and Rice Research、Genetic diversity and population structure、Genetic Mapping and Diversity in Plants and Animals

BACKGROUND: A complex interaction and mutual influence exists among landscapes, cultures, and landraces, with rice culture being a typical embodiment of this relationship. The conservation of landraces operates alongside preserving traditional practices. The Xishuangbanna region stands out as a hub for the genetic diversity of landraces, boasting rich genetic resources. Despite the diverse rice resources in this region, a comprehensive and systematic study has not been undertaken. METHODS: From October to November 2023, we collected rice landraces under the on-farm conservation in 18 townships including Menghai, Mengla and Jinghong in Xishuangbanna. Employing semi-structured interviews and various methods, we investigated factors influencing the preservation and loss of rice landraces in the region. Statistical analysis was applied to the agronomic traits of collected local rice, encompassing indica or japonica, glutinous or non-glutinous, grain shape, and hull color as second category traits. The second category included quantitative traits like thousand grain weight and grain length. Rice diversity among different regions, traits, and ethnic groups was assessed using the Shannon-Wiener index. Additionally, clustering analysis via the UPGMA method depicted the distribution characteristics of the resources. RESULTS: A total of 70 rice landraces were collected in the Xishuangbanna region, each exhibiting distinct characteristics. Differences were observed across regions, trait...