Cabasan M. T. N. auteur aut IRD Kumar A. auteur aut IRD Bellafiore Stéphane auteur aut IRD De Waele D. auteur aut IRD text journalArticle eng text/pdf born digital access Five populations of Meloidogyne graminicola isolated from different rice-growing areas in the Philippines were characterised. The populations showed little phenotypic variability of second-stage juveniles and female perineal pattern. Differences in reproduction among M. graminicola populations were not observed on mature resistant Oryza glaberrima varieties 'TOG5674', 'TOG5675', 'RAM131' and 'CG14', or on susceptible O. sativa varieties 'IR64' and 'UPLRi-5'. In all infected rice varieties, plant growth and yield-contributing traits showed no differences among the populations. A search on M. graminicola populations from the Philippines for single-nucleotide polymorphism on the sequences of Internal Transcribed Spacer ( ITS) of rDNA genes and mtDNA indicated only few points of heteroplasmy. Nematode reproduction and disease induction of the five M. graminicola populations in the Philippines exerted the same level of aggressiveness and virulence. The absence of resistance-breaking populations of M. graminicola is important for the maintenance of durability of resistance to this important rice pathogen. specialized aggressiveness heteroplasmy ITS morphology mtDNA Oryza glaberrima Oryza sativa root-knot nematode virulence PHILIPPINES 076 080 20 4 299-318 2018 1388-5545 https://www.documentation.ird.fr/hor/fdi:010072783 10.1163/15685411-00003142 1388-5545 [F B010072783] https://www.documentation.ird.fr/hor/fdi:010072783 https://www.documentation.ird.fr/intranet/publi/2018/05/010072783.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2018-06-01 2018-06-03 fdi:010072783 fre