ArticleProceedings of the National Academy of Sciences of the United States of America2009
Genetic structure and isolation by distance in a landrace of Thai rice.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.
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39 citing papers in PubMed.
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- Screening of Ginkgo Individuals with Superior Growth Structural Characteristics in Different Genetic Groups Using Terrestrial Laser Scanning (TLS) Data.Plant phenomics (Washington, D.C.) · 2023Article
- Harnessing intra-varietal variation for agro-morphological and nutritional traits in a popular rice landrace for sustainable food security in tropical islands.Frontiers in nutrition · 2023Article
- Genetic Diversity and Environmental Influence on Yield and Yield-Related Traits of Adzuki Bean (Plants (Basel, Switzerland) · 2022Article
- Traditional agricultural management of Kam Sweet Rice (Oryza sativa L.) in southeast Guizhou Province, China.Journal of ethnobiology and ethnomedicine · 2022Article
- Kam Sweet Rice (Frontiers in plant science · 2022Article
- Whole Genome Resequencing of 20 Accessions of Rice Landraces Reveals Javanica Genomic Structure Variation and Allelic Genotypes of a Grain Weight Gene TGW2.Frontiers in plant science · 2022Article
- Characterization and exploring genetic potential of landraces from Odisha with special emphasis on grain micronutrient content for benefaction of biofortification in rice.Physiology and molecular biology of plants : an international journal of functional plant biology · 2022Article
- Genetic Structure and Geographical Differentiation of Traditional Rice (Plants (Basel, Switzerland) · 2021Article
- Genetic differentiation and restricted gene flow in rice landraces from Yunnan, China: effects of isolation-by-distance and isolation-by-environment.Rice (New York, N.Y.) · 2021Article
- NILs of Cold TolerantFrontiers in genetics · 2021Article
- Genetic Diversity of Landraces and Improved Varieties of Rice (Oryza sativa L.) in Taiwan.Rice (New York, N.Y.) · 2020Article
- Genomic analyses reveal selection footprints in rice landraces grown under on-farm conservation conditions during a short-term period of domestication.Evolutionary applications · 2020Article
- The maintenance of stable yield and high genetic diversity in the agricultural heritage torreya tree system.BMC ecology · 2019Article
- Modeling Epidemics in Seed Systems and Landscapes To Guide Management Strategies: The Case of Sweet Potato in Northern Uganda.Phytopathology · 2019Article
- Article
- Preservation of the genetic diversity of a local common carp in the agricultural heritage rice-fish system.Proceedings of the National Academy of Sciences of the United States of America · 2018Article
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5 authors.
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Abstract
Rice is among the 3 most important crops worldwide. While much of the world's rice harvest is based on modern high-yield varieties, traditional varieties of rice grown by indigenous groups have great importance as a resource for future crop improvement. These local landraces represent an intermediate stage of domestication between a wild ancestor and modern varieties and they serve as reservoirs of genetic variation. Such genetic variation is influenced both by natural processes such as selection and drift, and by the agriculture practices of local farmers. How these processes interact to shape and change the population genetics of landrace rice is unknown. Here, we determine the population genetic structure of a single variety of landrace rice, Bue Chomee, cultivated by Karen people of Thailand. Microsatellite markers reveal high level of genetic variation despite predominant inbreeding in the crop. Bue Chomee rice shows slight but significant genetic differentiation among Karen villages. Moreover, genetically determined traits such as flowering time can vary significantly among villages. An unanticipated result was the overall pattern of genetic differentiation across villages which conforms to an isolation by distance model of differentiation. Isolation by distance is observed in natural plant species where the likelihood of gene flow is inversely related to distance. In Karen rice, gene flow is the result of farmers' seed sharing networks. Taken together, these data suggest that landrace rice is a dynamic genetic system that responds to evolutionary forces, both natural and those imposed by humans.
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