Environmental Entomology (1985) 14, 404-407

E.A. Heinrichs, V.D. Viajante and A.M. Romena (1985)
Resistance of wild rices, Oryza spp., to the whorl maggot Hydrellia philippina Ferino (Diptera: Ephydridae)
Environmental Entomology 14 (4), 404-407
Abstract: Lack of varieties resistant to the rice whorl maggot Hydrellia philippina in cultivated rice, Oryza sativa, for use as donors in the breeding program, prompted the field screening of the International Rice Research Institute collection of wild rices. Of 307 accessions screened, 45, from 11 species, were selected as resistant. The species were: O. alta, O. australiensis, O. brachyantha, O. grandiglumis, O. latifolia, O. minuta, O. nivara, O. officinalis, O. perennis, O. punctata, and O. ridleyi. Greenhouse studies indicated that resistance was due to nonpreference for oviposition and to low larval survival. Wild rices have been crossed with O. sativa in the insect resistance breeding program using embryo culture techniques.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Elvis Arden Heinrichs

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Hydrellia philippina	Rice (Oryza)	Philippines