The Biobrio 12(1 & 2), 2025

Screening of plant parasitic Nematodes associated with Tomato crops in Madhepura district

Pritam Kumari & Arun Kumar

ABSTRACT:

A survey was conducted in 14 plots of five villages under Madhepura district to examine PPN infection in tomato crops. Out of 14 plots, 10 plots were positive for PPN. Meloidegyne dominated among all six genera of PPN. The six genera isolated from tomato plants were Meloidegyne, Helicotylenchus, Aphelenchus, Pratylenchus, Tylenchus and Longidorus. The average frequency of occurrence was recorded as 0.642 for Meloidegyne and Helicotylenchus, 0.571 for Aphelenchus, 0.357 for Pratylenchus and Tylenchus, 0.428 for Longidorus. Average absolute frequency was observed as 0.409% for Meloidegyne, 0.204% for Helicotylenchus, 0.227% for Aphelenchus, 0.200 for Pratylenchus, 0.190 for Tylenchus and 0.068% for Longidorus. Population density of each PPN genera was examined in soil and root of Tomato plants. Maximum population density was recorded both in soil and root for Meloidegyne in all plots where it occurred.

Keywords:    

Plant parasitic nematodes, Tomato, Population density, Frequency, Absolute frequency

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