Fine grain medium duration rice variety, Ratnagiri-6 for Konkan region, Maharashtra state, India

Abstract

The rice variety Ratnagiri 6 (RTN 65-1-2-2-2 ) was evolved from the cross between IR64 and Paras Sona using former parent as female through pedigree method of selection. The above variety is midlate in duration (118-125 days in Kharif), Semi-dwarf (100-110 cm plant height), medium slender and translucent kernel type. The variety showed 36.57, 19.96, 9.11, 23.53 and 26.38 per cent higher yield over the respective checks in station, state, national, agronomical and adaptive trials, respectively. It showed excellent milling (70.30 %), head rice recovery (66.19 %) and good cooking qualities (Amylose content 25.43 %). Ratnagiri 6 rice variety showed moderately resistant to leaf blast and bacterial leaf blight diseases and moderately resistant to stem borer, leaf folder and gall midge at endemic sites. It recorded an average yield of 4.0 to 4.5 t/ha. Therefore the rice variety Ratnagiri 6 recommended for release for commercial cultivation in Konkan region of Maharashtra in the year 2017.