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Resistance to rice root-knot nematode Meloidogyne graminicola in Oryza longistaminata and Oryza glaberrima  [1998]

Soriano, I.R. Espiritu, M.J. Schmit, V. Brar, D. et al.

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Accessions of Oryza longistaminata, O. glaberrima, and O. sativa were screened to identify sources or resistance to Meloidogyne graminicola. Cuttings of these African rice species and 5-d-old seedlings of O. sativa cultivars were inoculated with 6,000 M. graminicola J2/plant in three splits at 2-d intervals a week after planting. Root nematode populations were estimated 60 days after the last inoculation. O. sativa entries were all susceptible to the rice root-knot nematode. One accession of O. longistaminata represented by two individuals (WL02-2 and WL02-15) and the three accessions of O. glaberrima (TOG 7235, TOG 5674, and TOG 5675) were found resistant to M. graminicola. Crosses between these accessions and elite O. sativa cultivars have been performed and evaluation of hybrid progenies for resistance to the rice root-knot nematode is on-going

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Philippine Journal of Crop Science (Philippines)

ISSN : 0115-463X

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