Screening of rice hybrids for resistance to rice gall midge, Orseoli oryzae (Wood-mason) under rainfed ecosystem

摘要

Field screening of 49 rice hybrids was carried out against gall midge during kharif season of 2009-10 at the Agricultural Research Station, Sirsi (Uttar Kannada) under rainfed ecosystem. Hybrids were evaluated based on the standard evaluation scale of0-9. Among 49 rice hybrids screened, 42 rice hybrids showed susceptible reaction [11-25% silver shoots (SS)]; two hybrids showed highly susceptible (>25% SS) and remaining five hybrids showed highly resistant (0% SS). None of the hybrids was found to beresistant, moderately resistant and moderately susceptible.