Screening of Pinilisa derived Mutant Lines and selected pigmented rice for resistance against rice yellow stem borer, Scirphopaga incertulas (Walker) under screen house condition [manuscript]
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Date
2020
Authors
Merjorie C. Tablada
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Abstract
Rice Yellow stem borer (YSB) Scirpophaga incertulas (Walker) is one of the important internal pests causing serious damage to rice growing areas recently. Growing resistant variety is an excellent alternative to other management tactics. Identification of resistant or moderately resistant varieties for stem-borer damage is the prime step to forward direction. Nineteen genotypes were evaluated for resistance against rice stem borer under screen house condition. Inoculation was done at maximum tillering stage and reproductive stage of the rice plant. The stem with dead heart and white heads was checked for feeding symptoms of larva. The damage scale was calculated by comparing with the resistant check and susceptible variety. Among the three pigmented rice varieties, there are no genotypes that showed resistance. From the seventeen-mutant population, there are three genotypes (CSMP62a, CSMP87, CSMP114) that showed resistance both in dead hearts and white heads. These breeding materials can be used as a potential donor for the resistance against rice yellow stem borer.