Question

The disease root-knot of brinjal is caused by

• A. Fusarium udum
• B. Phytophthora infestans
• C. Meloidogyne incognita
• D. Pseudomonas rubrilineans
• E. Xanthomonas citri

Answer 1

The correct option is C Meloidogyne incognita

Root-knot of brinjal is caused by parasitic nematodes from the genus Meloidogyne. They exist in soil in areas with hot climates or short winters. Four major species of Meloidogyne are major pests worldwide as M. javanica, M. arenaria, M.congnita and M. hapla. The root-knot nematode larvae infect plant roots, causing the development of the root-knot galls that drain the plant's photosynthate and nutrients. Thus, the correct answer is option C.