Genotypic response of different potato cultivars against Meloidogyne incognita
2013
Hayat, A. (University of Agriculture, Faisalabad (Pakistan). Dept. of Plant Pathology) | Javed, N. (University of Agriculture, Faisalabad (Pakistan). Dept. of Plant Pathology) | Khan, S.A. (University of Agriculture, Faisalabad (Pakistan). Dept. of Plant Pathology) | Gondal, A.S. (University of Agriculture, Faisalabad (Pakistan). Dept. of Plant Pathology) | Kamran, M. (Plant Protection and Quality Control of Pesticides, Sargodha (Pakistan)) | Aasi, M.S. (Plant Protection and Quality Control of Pesticides, Sargodha (Pakistan))
The use of resistant genotypes is an attractive alternative for managing yield losses caused by plant parasitic nematodes. Experiments were designed to identify resistant potato germplasm against root-knot nematode, Meloidogyne incognita, at Faisalabad, Pakistan. Ten potato cultivars, replicated five times in RCBD layout, were sown in a sick plot infested with M. incognita. Root-knot nematode reproduction and host damage were assessed by recording root galls, egg-mass indices, root weight, shoot weight, number of leaves, fruit weight, rate of reproduction and final population of nematodes. The data revealed considerable variation in response against M. incognita among the genotypes tested but none of the cultivars was immune. The cultivar FD-8-1 was highly susceptible. Other nine cultivars had lesser galling index, with low fecundity =indicating their ability to restrain the adult female reproduction. The cultivar FD-61-3 scored least number of root galls and egg-mass indices.
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