Rice CO 53: A high yielding drought tolerant rice variety for drought prone districts of Tamil Nadu

Early duration drought tolerant rice culture CB 06803, a derivative of the cross PMK (R ) 3 x Norungan was released as Rice CO 53 during year 2020 an alternate variety for Anna(R)4, with 115 -120 days duration. It possesses desirable features like high yield, tolerance and better physiological efficiency. This semi dwarf stature has efficient tillering capacity, long droopy panicles highly acceptable plant characters is replacement Anna (R) 4 due to its grain yield pest disease resistance. In overall analysis, CB06803 recorded mean 3718 kg/ha which 12.19 per cent increase over TKM 12 14.08 under dry condition. Under condition, it 3866 18.40 8.67 4. moderately resistant WBPH, leaf blast, neck sheath rot, brown spot RTD artificial white short bold milling percentage (69.6), head recovery (59.6%) suitable idly making. The culture, 06803 had  agronomic efficiency than (R)12 by recording more number productive tillers control drought. 4  having higher RWC, total chlorophyll content, stability index, photosynthetic rate, stomatal conductance photo chemical proline content on par catalase activity showing partial closure stomata that Sahbagidhan. drought, resistance grains cultivation in prone districts Tamil Nadu direct seeded rainfed or ecosystem. Keywords: 53, rice, duration,