Manual on Biotic Stress Resistance Evaluation (First Edition)
2025
Telebanco-Yanoria, Mary Jeanie | Atienza-Grande, Genelou | Jonson, Gilda | Almazan, Maria Liberty | Bernal, Carmencita | Pangesti, Nurmi | Pacia, Jocelyn | Castilla, Nancy | Carvajal, Raphael | Ortega, Kendrix | Natulan, Rafael Luis | Valenzuela, Ma Michelle | Vera Cruz, Casiana | Schepler-Luu, Van
Overview Biotic stresses due to pests and diseases are dynamic, and their occurrence is influenced by several factors, such as host genotype, cropping practices, and extreme weather events brought about by climate change. Major diseases caused by pathogens, and nematodes and insect pests, such as brown planthoppers, green leafhoppers, and stemborers, reduce rice yields in different ecosystems, if these are not properly assessed and managed. The use of host plant resistance is generally considered as the most economical, practical, and environment-friendly strategy for pest management. It enables farmers to reduce yield losses and improve productivity and profitability without reliance on pesticides, which becomes increasingly important in the face of climate change. However, robust screening protocols are often lacking or not standardized. Hence, capacity development on the protocols used at IRRI for the evaluation of resistance to biotic stresses will facilitate the identification and selection of resistant genotypes. A standard protocol will facilitate collaboration among different institutes. Acquiring skills in evaluating rice genotypes to biotic stresses is crucial for developing pest management strategies.
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