Parasitism and pathogenicity of Radopholus similis to Nicotiana tabacum and Mangifera indica.
Han YuChun, Xie Hui, Qin Dan, Huang ChunXiao
Author Affiliation: Laboratory of Plant Nematology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China.
Scientia Agricultura Sinica 42 : 130-135
Abstract : A study was conducted on the parasitism and pathogenicity of 10 populations of Radopholus similis intercepted from different imported host plants and reproduced on carrot callus to Nicotiana tabacum and Mangifera indica. Research on the parasitism and pathogenicity of the R. similis populations was performed by a pot trial in greenhouse. A lot of R. similis were recovered from the roots and media of N. tabacum and M. indica indicating that the reproductive factor of R. similis were over one on these plants. The N. tabacum and M. indica inoculated with R. similis grew slowly and smaller than the plant without inoculation of R. similis. Obvious symptoms were observed on the roots that became faint chlorotic and rotten. The N. tabacum and M. indica are new good hosts for R. similis. The R. similis have obvious pathogenicity to the two plants, and there are differences in pathogenicity among populations.