IRRI develops rice varieties that are resistant to major insect pests and diseases such as blast, bacterial blight, sheath blight, and tungro virus. Developing and using blast-resistant varieties is the most practical and economical approach to control blast. However, its use has not been completely successful due to the presence of lineages that may consist of different physiologic races overcoming host resistance. For the rice plant to effectively combat blast, scientists at IRRI are combining into the same rice type different race-specific genes and genes conferring quantitative resistance.

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Guest over a year ago. SPom2481194 over a year ago. I have the same issue. I know its kind of rare, too.