| Comparative Analysis of Genetic Diversity in Landraces of Waxy Maize from Yunnan and Guizhou Using SSR Markers |
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| 作者姓名： | LIU Yong-jian HUANG Yu-bi RONG Ting-zhao TIAN Meng-liang YANG Jun-pin |
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| 作者单位： | [1]College of Agriculture, Sichuan Agricultural University, Ya＇an 625014, P.R. China [2]Maize Research Institute, Sichuan Agrieultural University, Ya＇an 625014, P.R.China [3]Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610017, P.R.China |
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| 摘 要： | Waxy maize landraces are abundant inYunnan and Guizhou of China. Genetic diversity of waxy maize landraces from Yunnan and Guizhou were analyzed using SSR markers. We screened 38 landraces with 50 primers that generated 3 to 6 polymorphic bands, with an average of 4.13 bands. Shannon＇s information indices for genetic diversity of the 14 waxy maize landraces from Yunnan varied from 4.9571 to 42.1138 and averaged 26.5252; Shannon＇s information indices for genetic diversity of the 24 waxy maize landraces from Guizhou varied from 22.0066 to 40.6320 and averaged 32.3156. For the 14 waxy maize landraces from Yunnan, the within-landrace genetic diversity accounted for 45.40% and the among-landrace genetic diversity accounted for 54.60% of the total genetic diversity observed. For the 24 waxy maize landraces from Guizhou, the within-landrace genetic diversity accounted for 50.76% and the among-landrace genetic diversity accounted for 49.24% of the total observed. Some individual landraces possessed as much as 96.86% of the total genetic diversity occurring among landraces within origins. Differentiation between geographic origins accounted for only 3.14% of the total genetic diversity. Both Yunnan and Guizhou would be the diversity centers and the original centers of waxy maize.
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| 关 键 词： | 贵州 云南 玉米 基因 多样性 |
Comparative Analysis of Genetic Diversity in Landraces of Waxy Maize from Yunnan and Guizhou Using SSR Markers |
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| LIU Yong-jian HUANG Yu-bi RONG Ting-zhao TIAN Meng-liang YANG Jun-pin.Comparative Analysis of Genetic Diversity in Landraces of Waxy Maize from Yunnan and Guizhou Using SSR Markers[J].Agricultural Sciences in China,2005,4(9):648-653. |
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| Authors: | LIU Yong-jian HUANG Yu-bi RONG Ting-zhao TIAN Meng-liang YANG Jun-pin |
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| Abstract: | Waxy maize landraces are abundant in Yunnan and Guizhou of China. Genetic diversity of waxy maize landraces from Yunnan and Guizhou were analyzed using SSR markers. We screened 38 landraces with 50 primers that generated 3 to 6 polymorphic bands, with an average of 4.13 bands. Shannon's information indices for genetic diversity of the 14 waxy maize landraces from Yunnan varied from 4.9571 to 42.1138 and averaged 26.5252; Shannon's information indices for genetic diversity of the 24 waxy maize landraces from Guizhou varied from 22.0066 to 40.6320 and averaged 32.3156. For the 14 waxy maize landraces from Yunnan, the within-landrace genetic diversity accounted for 45.40% and the among-landrace genetic diversity accounted for 54.60% of the total genetic diversity observed. For the 24 waxy maize landraces from Guizhou, the within-landrace genetic diversity accounted for 50.76% and the among-landrace genetic diversity accounted for 49.24% of the total observed. Some individual landraces possessed as much as 96.86% of the total genetic diversity occurring among landraces within origins. Differentiation between geographic origins accounted for only 3.14% of the total genetic diversity. Both Yunnan and Guizhou would be the diversity centers and the original centers of waxy maize. |
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| Keywords: | Genetic diversity Simple sequence repeat Landrace Waxy maize |
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