ABSTRACT
An experiment was conducted to evaluate the overall performance of popular short duration inbred T. aman rice varieties (Binadhan-16, Binadhan-17, BRRI dhan71, BRRI dhan75, BRRI dhan103, BRRI dhan87, Binadhan-7 and Binadhan-22) at three different locations (Research farm of Bangladesh Institute of Nuclear Agriculture (BINA) and Bangladesh Rice Research Institute (BRRI), Rangpur and Bangladesh Wheat and Maize Research Institute (BWMRI), Dinajpur) during T. aman season 2022-23. Results revealed that the variety BRRI dhan103 had the best significant performance regarding all traits evaluated (plant height, days to maturity, culm length, effective tillers hill-1, panicle length, filled grains panicle-1, and grain yield) (125.90 cm, 119.70 days, 116.40 cm, 17.87, 29.13 cm, 165.0, and 6.69 t ha-1, respectively) as compared to that of other varieties. Locations revealed that the research field of BINA and BRRI, Rangpur required numerically similar highest days for maturity (113.3 and 113.80 cm). Interaction effect also showed that the BRRI dhan103 grown at research field of BRRI Rangpur required the highest days for maturity (122.0 days) which also recorded the longest culm (117.20 cm) and panicle (29.80 cm), more effective tillers hill-1 (18.20) and filled grains panicle-1 (167.60) which confirm the highest grain yield (6.74 t ha-1). However, BRRI dhan103 grown at research field of BINA, Rangpur and BWMRI, Dinajpur also obtained the identical longest culm (115.80 and 116.20 cm, respectively) and grain yield (6.67 and 6.67 t ha-1, respectively) in this study. Among the tested varieties, BRRI dhan103 had the higher yield potential short durable inbred Aman variety along with wider adaptation in respect to location capacity for northern part of Bangladesh.
Key words: Short duration, inbred T. aman, location, growth and yield
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