Original Research Article
Year: 2016 | Month: June | Volume: 3 | Issue: 6 | Pages: 1-5
Screening and Evaluation of Green Gram Varieties /Cultivars against Root-Knot Nematode, Meloidogyne Incognita
Ritu Kumari Pandey, Dhirendra Kumar Nayak
Department of Nematology, College of Agriculture, Orissa University of Agriculture and Technology, Bhubaneswar, 751003, Orissa.
Corresponding Author: Dhirendra Kumar Nayak
Out of thirty-eight green gram varieties/cultivars screened against root-knot nematode, only thirty-four varieties have shown resistant reaction with 3-6 numbers of galls per plants, while four varieties/cultivars showed moderately resistant reaction with 10-11 numbers of galls per plants. Due to infection of root-knot nematode, the maximum average shoot length of green gram cultivars/varieties was 40.66 cm in variety 20 MH-175. The decrease in shoot length was more pronounced with 22.03 cm in 5 DGG-5 varieties, which was statistically different from other resistant varieties. The decrease is possibly due to improper uptake and transport of elements, nutrients and water resulted from nematode infection. The decrease in shoot weight (22.70 g) and dry root weight (0.3 g) of the green gram variety, 9 GM 11-02 and 15 IPM 2K 15-4 was significantly different from the rest varieties showing resistant and moderately resistant reaction to the test nematode. Possible reason for reduction of shoot weight and root weight in infected plant may be due to improper supply of nutrients resulting from nematode infection for which it is compensated to some extent in resistant varieties.
Key words: Green gram, Meloidogyne incognita,V. radiata (L.)