Biology of Meloidogyne incognita Infecting Carnation Kavitha T.R.1, Ravichandra N.G.2, Sunitha T.R.3 1Department of Plant Pathology, Sericultural College, UAS (B), Chintamani-563 125, Chikkaballapura District, Karnataka State, India 2Department of Plant Pathology, College of Agriculture, UAS, GKVK, Bengaluru, Karnataka State, India 3Department of Agricultural Entomology, College of Agriculture, Karekere, Hassan, Karnataka state, India Corresponding author; E-mail:
Online published on 27 November, 2018. Abstract The biology and life cycle of Meloidogyne incognita was studied on carnation which revealed that most of the J2 invaded the roots of carnation 2 days after inoculation. A study on various stages of development and maturity of invaded larvae of M. incognita was undertaken in carnation. About 83.10 J2 had invaded on 5th day of inoculation, 75.36 in J3 stage, 69.00 in J4 stage, 64.66 in pre mature adult stage and 11.33 nematodes in adult stage were observed (on 10th, 15th, 20th and 30th days)respectively. In carnation, M. incognita took 25.66 days to produce galls and also egg masses (28.00 days) and produce about 398 eggs/egg mass. Totally the nematodes took 24–34 days to complete their life cycle. Major stages of M. incognita were also measured. Second stage juvenile and adult female were important stages which measures about 313–340 μm length, 21–26 μm width and 472–494 μm length, 206–223 μm body width respectively. Top Keywords Biology, Carnation, Meloidogyne incognita, Root-knot nematode, life cycle. Top |