Abstract
Thirty-seven bitter gourd genotypes belonging to Momordica charantia (30 accessions) and Momordica balsamina (5 accessions) species were evaluated against root knot nematode, Meloidogyne incognita under artificial conditions to identify the resistant source(s). Results demonstrated that all the five M. balsamina accessions (MB-3, MB-5, MB-6, MB-7 and Local-1) showed resistant reaction to root knot nematode in terms of low root galls, soil nematode population and reproduction factor. On the other hand, most of M. charantia accessions were found moderately susceptible or susceptible to root knot nematode except two lines (PAUBG-1 and PAUBG-13) which gave moderate resistant reaction. Further, cluster analysis was used to investigate the resistance among 37 bitter gourd genotypes based on their growth and resistance indexes after inoculation with M. incognita. The bitter gourd accessions/genotypes under the present study could be divided into five groups based upon their resistance levels viz., resistant, moderately resistant, moderately susceptible, and highly susceptible to M. incognita. All the M. balsamina accessions exhibited resistance while M. charantia accessions exhibited moderate resistant, susceptible and highly susceptible reaction to root knot nematode.
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Sharma, R., Kaur, S., Dhillon, N.K. et al. Identification of resistance in cultivated and wild bitter gourd against root knot nematode, Meloidogyne incognita. Indian Phytopathology 72, 203–208 (2019). https://doi.org/10.1007/s42360-019-00122-z
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DOI: https://doi.org/10.1007/s42360-019-00122-z