Genetic Structure and Eco-Geographical Differentiation of Cultivated Keng Rice (Oryza sativa L. subsp. japonica) in China Revealed by Microsatellites
| Autor: | Junli Sun, Dongling Zhang, Li ZiChao, Hongliang Zhang, Jin-jie Li, Meixing Wang, Yong-wen Qi, Fengmei Wang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Germplasm
eco-geographical differentiation China Agriculture (General) Plant Science Biology Subspecies Biochemistry Japonica microsatellites S1-972 Food Animals Botany parasitic diseases japonica rice Genetic diversity Oryza sativa Ecology Ecotype food and beverages population structure biology.organism_classification Genetic structure Microsatellite Animal Science and Zoology Agronomy and Crop Science human activities Food Science |
| Zdroj: | Journal of Integrative Agriculture, Vol 11, Iss 11, Pp 1755-1766 (2012) |
| ISSN: | 2095-3119 |
| Popis: | China is one of the largest centers of genetic diversity of Oryza sativa L. and is the original centers of Oryza sativa L. subspecies japonica. Using a genetically representative core collection of 1 442 rice landraces of japonica in China, the genetic structure, differentiation, and geographic diversity were analyzed. The model-based structure analysis on varieties within three ecotypes revealed 16 eco-geographical types, which are partially accorded with some of the ecological zones in China. The differentiation of eco-geographical types contributed to the local ecological adaption and physical isolation, and maybe could be used to develop the heterotic groups of japonica. To facilitate the identification of different ecotypes and eco-geographical types, we provided the SSR character alleles of each ecotype or geographical eco-group and a rapid discriminated method based on these character alleles. Lastly, investigation on genetic diversity, genetic differentiation indicated that southwest region of China, including south of Yunnan Province, northwest of Guangxi Zhuang Autonomous Region, and southwest of Guizhou Province, possessed the highest genetic diversity and all the necessary conditions as a center of genetic diversity and should be the center of genetic diversity of rice landraces of japonica in China. |
| Databáze: | OpenAIRE |
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