Vol. 12, Issue 5 (2023)

Author(s):
Pathogenicity studies on root-knot nematode, meloidogyne incognita race-II chitwood, infesting pomegranate in glasshouse

Abstract:
In Pathogenicity studies on root-knot nematode, Meloidogyne incognita race-II Chitwood, infesting Pomegranate in glasshouse, two months old rooted grafts of pomegranate (cv. Bhagwa) were inoculated with 0, 10, 50, 100, 500, 1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000, 9000 and 10,000 nematodes per plant containing 2^nd stage juveniles of root- knot nematodes. The experiment was terminated 45 days after inoculation. It was observed from the results that with increase in the inoculation level of root-knot nematode, there was progressive decrease in plant growth with significant reduction in all the plant growth characters and increase in nematode multiplication factor at higher inoculation levels. The significant reduction in length, fresh and dry weights of shoot and root and significant increase in nematode multiplication factors was observed at 1000 and above inoculation levels. However, the number of times nematode multiplication decreased with increase in inoculum level.