Selection of Rice Promising Lines Having Ciherang’s Idiotype for Improved Resistance of Main Pest and Diseases

Abstract

Ciherang is the most extensively planted rice variety in the Indonesia. Ciherang was released as a rice variety in 2000 and successfully replaced IR 64 as the most dominant variety. The wide adoption of Ciherang is because of its acceptable to farmers’ preferences including high yield, resistance to major diseases and good grain quality. Recently, Ciherang become vulnerable to pest and diseases and get low yield due to more occurrence the abiotic stress. The Rice breeding program to develop the Ciherang reborn has been conducted in Indonesian Center for Rice Research. The research aimed to select lines based on yield, morphological performance, and resistant to main pest and diseases for next evaluation of a multilocation yield trial for releasing variety. The materials used were 56 rice genotypes that evaluated yield, agronomic characters, and evaluated to brown planthopper and bacterial left blight. Ten promising lines was selected, derivative from Ciherang or similar ideotype with Ciherang, high yielding, more resistant to main pest and diseases than Ciherang. These promising lines was evaluated in multilocation yield trials for releasing variety.