Ecogeographic and genetic diversity based on morphological characters of indigenous rice (Oryza sativa L.) in Yunnan, China

被引：54

作者：

Zeng Yawen

Shen Shiquan

Li Zichao

Yang Zhongyi

Wang Xiangkun

Zhang Hongliang

Wen Guosong

机构：

[1] Yunnan Acad. of Agric. Sciences, Crop Germplasm Resources Institute, Kunming

[2] College of Crop Science, China Agricultural University

来源：

Genetic Resources and Crop Evolution | 2003年 / 50卷 / 6期

基金：

中国国家自然科学基金;

关键词：

Ecological diversity; Genetic diversity; Indigenous rice; Varietal classification; Yunnan;

D O I：

10.1023/A:1024436501289

中图分类号：

学科分类号：

摘要：

Yunnan is one of the largest centres of genetic ecological diversity and the richest area for elite germplasm of rice (O. sativa L.) resources in the world. Its indigenous rice average diversity index of six ecological groups are, in turn, javanica (1.2319) > aman (1.1738) > communis (1.1726) > nuda (1.1618) > aus (1.1371) > boro (0.9889), and there are great differences between indica (1.1454) and japonica (1.2081). The indigenous rice in Yunnan can be divided into 58 varieties, almost the total number found in China, and the cultivars account for 8.6% of the total cultivars in China. A great difference in ecological diversity index of rice resources between prefectures or counties in Yunnan province also exists, with the southwest part (Lincang, Xishuangbanna, Dehong, Simao) and southeast part (Wenshan) having been found to be the largest centre of genetic diversity, as their average genetic diversity index ranges from 1.2735 to 1.2036, especially. The average diversity index of the Cangyuan, Gengma, Zhenkang, Yongde, Yingjiang, Jinghong, Menghai, Shuangjiang, Ruili, Longchuan, Mojiang, Wenshan and Guangnan counties, in particular, have an average diversity index ranging from 0.8 to 1.0. On the contrary, in Diqing, Dongchuan, Kunming, Lijiang, Qujing, Chuxiong, it is comparatively low, i.e., 0.7843-1.1075. Differences in the ecological diversity index of rice resources between rice regions are small, only 1.1322 to 1.2849.

引用

页码：567 / 577

页数：10

共 22 条

[1]

Chang T.T., The origin, evolution, cultivation, dissemination and diversification of Asian and African rices, Euphytica, 5, pp. 425-441, (1976)

[2]

Cheng K., Wang X., Study on the indigenous rice in Yunnan and their utilization, Acta Agron. Sin., 10, pp. 271-280, (1984)

[3]

Li Z., Studies on Sampling Strategy for Core Collection of Chinese Landrace and Genetic Diversity of Phenotypes and Isozymes, (2001)

[4]

Li Z., Zhang H., Zeng Y., Yang Z., Shen S., Sun C., Et al., Study on sampling schemes of core collection in local varieties of rice in Yunnan, China. Gent. Resour. Crop Evalut., 49, pp. 297-306, (2002)

[5]

Liu K., Zhang Q., Zhang D., Genetic variation and indica-japonica differentiation in Yunnan indigenous rice, Acta Bot. Sin., 37, pp. 718-724, (1995)

[6]

Sun C., Wang X., Yoshimura A., RFLP analysis on mitochondrial DNA in common wild rice (O. rufipogon Griff.) and cultivated rice(O. sativa L.), Acta Genet. Sin., 25, pp. 40-45, (1998)

[7]

Wang X., Sun C., Origin and Differentiation of Chinese Cultivated Rice, pp. 85-91, (1996)

[8]

Yu L.Q., Classfication of Oryza Sativa L. in China (In Chinese), (1996)

[9]

Yuan L., Breeding of super hybrid rice, Rice Research for Food Security and Poverty Alleviation, pp. 143-149, (2001)

[10]

Yuan P., Lu Y., Huang N., Et al., Studies on differentiation of common wild rice in Yuanjiang Yunnan, J. of Beijing Agri. Univ., 21, pp. 133-137, (1995)

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