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| Analysis of Genetic Diversity on Different Ecological Watermelon〔Citrullus lanatus （Thunb.）Matsum. et Nakai〕Germplasm Using SSR Markers |
| ZHANG Fa-xing1, LUAN Fei-shi1*, SHENG Yun-yan2 |
| 1Horticulture College, Northeast Agricultural University, Harbin 150030, Heilongjiang, China; 2Agronomy College, Heilongjiang August First Reclamation University, Daqing 163319, Heilongjiang, China |
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Abstract Genetic diversity of 96 accessions watermelon〔Citrullus lanatus（Thunb.）
Matsum. et Nakai〕germplasm resources with different ecological types were evaluated by SSR molecular marker. Thirty-eight pairs out of 398 SSR primers generated a total of 7 043 bands, 826（11.7 %）of which were polymorphic with 21.74 polymorphic bands per primer on average. The genetic similarity coefficient of the 96 accessions ranged from 0.42 to 0.99. The result of cluster analysis showed that the relationship was far between wild germplasm and cultivars. There exist close relationship among the accessions from North China ecotype, South China ecotype and Northwest China ecotype. Considering the high homology of watermelon germplasm resources and narrow genetic background in China, it is necessary to induce more germplasm resources so as to broaden watermelon breeding background.
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Received: 28 March 2010
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Corresponding Authors:
LUAN Fei-shi
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