National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
An experiment was carried out in the net house of department of Nematology, Assam Agricultural University, Jorhat during rabi season 2017 to study the pathogenicity of Meloidogyne incognita on Coccinia indica. For that local variety of Ivy gourd cuttings were planted in 1kg capacity pot filled with sterilized soil. One-month old cuttings were inoculated with second stage juvenile of M. incognita in a logarithmic series of check, associated check, 10, 100, 1000, 10,000 juveniles (J2) per pot. The plants were watered regularly. After 45 days of incubation it was observed that at highest inoculum level plants were very much stunted, chlorotic and with very few branches. Further, it was observed that at the highest inoculum level, root systems were very much reduced with the galls which were bigger in size and mostly coalescent in the roots. The treatment with no nematode (Check and associated check) was free from galls and eggmasses. The observations on the plant growth parameters like plant height, shoot and root weight (fresh and dry) were decreased progressively from initial inoculum level of 100 to highest inoculum level of 10,000 J2per pot but the nematode multiplications like number of galls per root, eggmasses per root and final nematode population in soil were increased gradually with increase in inoculum level from 10 to 1000J2 per pot, but it declined at 10,000J2 inoculum level per pot. Further, it was found that there was no significant difference in plant growth parameters like plant height, shoot and root weight (fresh and dry) and nematode multiplications like number of galls per root, eggmasses per root and final nematode population in soil among the treatments with no nematode i.e Check and associated Check. Moreover, it was observed that there was no significant difference for galls per root, eggmasses per root and final nematode population in soil in between the treatments with 10 and 10,000J2 per pot.
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