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Detection, Diagnosis and Pathogenic Potential of Meloidogyne incognita on Passion Fruit from Mizoram, India

Detection, Diagnosis and Pathogenic Potential of Meloidogyne incognita on Passion Fruit from Mizoram, India

Matiyar Rahaman Khan1,*, Sabyasachi Pal2, Ghule Tushar Manohar2, Somnath Bhattacharyya3, Amit Singh4, Prahlad Sarkar5 and Samuel Lalliansanga6

1Division of Nematology, ICAR-Indian Agricultural Research Institute, New Delhi-110 012, India
2Department of Agricultural Entomology, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia-741252, West Bengal, India
3Department of Genetics, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia-741252, West Bengal, India
4Indian Statistical Institute, Giridih-815 301, Jharkhand, India
5Uttar Banga Krishi Viswavidyalaya, Pundibari-736 165, Cooch Behar, West Bengal, India
6Department of Agriculture, Mizoram, Lengpui-796 510, India

*        Corresponding author: drmrkhanbckv@gmail.com

ABSTRACT

Root knot nematode (Meloidogyne incognita) infects passion fruit (Passiflora edulis) in Mizoram, India and infected plants showed declined symptoms and poor fruit yield. Infested plants displayed stunting and yellowing and thick-root symptoms. The association of the root knot nematode species was identified based on observations on morphology of different life stages, beta-esterase phenotype and amplification of rDNA and partial sequence homology of ITS-1and ITS-2. Host differential tests confirmed the race 2 of M. incognita infecting passion fruit. Pathogenic relationship with the passion fruit was proved through inoculation studies and inoculated plants also produced almost similar above-ground symptoms and profuse root galling. The pathogenic potential of M. incognita on passion fruit was determined; the minimum 10 second stage juvenile (J2)/200 cc soil can cause reduction of plant growth parameters and highest reproduction (R=87.27). 
 

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Pakistan Journal of Zoology (Associated Journals)

October

Vol. 49, Iss. 5, Pages 1547-1936

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