Title: Effect of elevated CO2 on host-parasite relationship of Tomato and root-knot nematode, Meloidogyne incognita race 1
Abstract: Tomato plants of two genotypes Pusa Ruby (susceptible) and SL-120 (resistant) were exposed to elevated CO2 level of 550 ppm and root-knot nematode, (RKN) race 1 was inoculated on 15th days of exposure. Histopathological studies revealed earlier development of RKN by the presence of adult female in Pusa Ruby on 20th DAI and giant cells were observed in both resistant and susceptible genotypes. SL-120 succumbed to nematode attack and there was no any hypersensitive reaction noticed in infected cells. Significantly higher peroxidase (PO) and superoxide dismutase (SOD) activity was observed under elevated CO2 and higher enzyme activity was observed at 3rd DAI. Then, the enzyme activity started decreasing from 7th up to 14th DAI, irrespective of genotype and CO2 exposure. Though higher enzyme activity was observed in resistant SL-120, the nematode continued to develop and complete its life cycle.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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