STUDIES ON POPULATION VARIATION OF MELOIDOGYNE GRAMINICOLA USING SOME WEEDS, FORAGE AND VEGETABLE CROPS
POOJA DEVI, R. S. KANWAR* AND ANIL KUMAR
Department of Nematology
CCS Haryana Agricultural University,
Hisar-125 004 (Haryana), India
*(e-mail : kanwarrambir@gmail.com)
(Received : 10 August 2016; Accepted : 15 September 2016)

SUMMARY

On the basis of host reactions, variations in populations of Meloidogyne graminicola from Assam, Bihar, Delhi, Haryana and Punjab were studied. Experiment was conducted under screen house conditions, in half kg earthen pots, using autoclaved soil. Five hundred fresh eggs and second stage juveniles of each population were inoculated on 10-day-old plants. Forty-five days after inoculation, data were recorded on number of galls seedling, life cycle stages inside the galls, number of eggs per root system and soil population from each pot. All the plants, (pearl millet, sorghum, barnyard grass, chotti savank, badi savank, brinjal and rice), except tomato, were found susceptible to all the five populations of M. graminicola, although variation occurred in respect of number of galls as well as root and soil population. Developmental stages of nematode were also recorded in the roots of all the plants, except tomato. Thus, all the populations showed similar reactions on the tested plant species.

Key words: Rice root-knot nematode, Meloidogyne graminicola, population variation, host range, weeds, sorghum, pearl millet

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