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| Effects of Grafting on Rhizosphere Microorganisms Quantity and Community Structure of Watermelon |
| LEI Juan-li1, SHOU Wei-song1, DONG Wen-qi1, ZHANG Cheng-hao1, XU Zhi-hao1, ZHOU Yan-hong2, YU Jing-quan2 |
| 1Vegetable Institute of Zhejiang Academy of Agricultural Sciences，Hangzhou 310021, Zhejiang, China; 2Horticulture Department of Zhejiang University, Hangzhou 310029, Zhejiang, China |
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Abstract The changes of microorganisms population, bacterial community structure and 2, 4-DAPG producers community structure in rhizosphere soil of grafted watermelon〔Citrullus lanatus（Thunb.）Matsum. et Nakai〕plants were studied using the methods of microorganism culture, 16S rDNA PCR-RFLP and phl D gene PCR-RFLP, respectively. The results showed that the bacterial and fungal population in rhizosphere soil of grafted watermelon was increased and that of the actinomyces population was decreased; the grafted watermelon had one similar main 16S rDNA genotype in rhizosphere soil with the non-grafted watermelon, although the grafted watermelon with different stock had their unique 16S rDNA genotypes different from non-grafted watermelon; the grafted watermelon had different main 2, 4-DAPG producers phl D genotypes from non-grafted watermelon.
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Received: 06 August 2010
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