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International Journal of Plant Pathology

Year: 2012 | Volume: 3 | Issue: 2 | Page No.: 66-73
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Authors

Ambreen Akhtar

Hisamuddin

Abbasi

Keywords

Research Article

Interaction Between Meloidogyne incognita, Pseudomonas fluorescens and Bacillus subtilis and its Effect on Plant Growth of Black Gram (Vigna mungo L.)

Ambreen Akhtar, Hisamuddin and Abbasi
Meloidogyne incognita infection produced adverse effects on the growth of black gram (Vigna mungo L.). Inoculation of the plants with the second-stage juveniles of M. incognita, prior to bacterial inoculation, resulted in reduction of plant growth, when compared with the plants in which bacterial application was followed by nematode inoculation. Plant length, fresh and dry weights, nodules weight, leghaemoglobin content and the number of nodules per plant were found decreased in nematode infected than in infected plants. Application of bacteria Pseudomonas fluorescens and Bacillus subtilis increased the growth parameters and the number of nodules. Highest number of galls per plant were recorded on the plants infected with the nematode and not treated with bacteria. Gall number was found decreased on the plants inoculated with the nematode and treated with the bacteria than the plants not treated with bacteria. Meloidogyne incognita on infecting black gram (Vigna mungo L.) in absence of bacteria caused the formation of a number of galls on the roots, decreased plant length, plant weight, number of nodules per plant and amount of leghaemoglobin. Incorporation of bacteria into the soil after 10 days of nematode inoculation resulting in an increase in all the growth parameters considered and decreased root-knot number.
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