ISHS Acta Horticulturae 821: International Symposium on Tomato in the Tropics
STUDIES AND SELECTION OF FOUR TOMATO CULTIVARS ON THE RESISTANCE TO RACE 3 MELOIDOGYNE INCOGNITA NEMATODES |
| Authors: | Wang Shao-Hui, Kong Yun, Yang Rui, Cheng Ji-Hong, Zhao Jin-Fang, Si Li-Shan |
| Keywords: | Solanum lycopersicum L., root galling, root tissue structure |
| Abstract:
Nowadays it has become popular to grow tomato in solar greenhouses in the north China for all the year consumption without rotation for the purpose to earn more money, which induced the break out of root-knot nematodes. The goal of this paper was to select the cultivars (‘Caihong 101’ (CK), ‘Weinasi’, ‘Xinxing’ and ‘Beijixing’) with the resistance to root-knot nematodes (race 3 Meloidogyne incognita). The inoculated larva were put into the sterilized soil after the tomato seeding emerged 50 days later, the resistance to the root-knot nematode was investigated and the resistance mechanism was discussed. The significance of differences within treatments was tested using Duncan test. The results were as followed: The nematode population of ‘Beijixing’ was more than the others; meanwhile, ‘Xinxing’ had the least nematode population among all the cultivars. There are two kinds of responds of the root tissue after the root-knot nematodes invaded the root: one stimulated the swell of the root cell and formed the root-knot (CK), another would not swell and the nematodes were screened out of the root, later the nematode would penetrate the root (‘Xinxing’). | |
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