A COMPARATIVE STUDY ON TRADITIONAL AND MODERN AROMATIC RICE VARIETIES IN AMAN SEASON

Abstract

A field experiment was conducted at the Research Farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, from July to December, 2018 (Aman season) with six traditional (Chinigura, Dulabhog, Chiniatop, Begun Bichi, Badshabhog and Kalizira) and four modern rice varieties (BRRIdhan34, BRRI dhan37, BRRI dhan38 and BRRIdhan50) with a view to assessing their performances. The experiment was laid out in Randomized Complete Block Design with three replications. Significant variation was found among the selected traditional and modern rice varieties in respect of their different growth and yield contributing characters. Among the ten rice varieties, traditional Begun Bichi was found inferior in case of grain yield. All the modern aromatic varieties contained higher amount of chlorophyll in their flag leaf at flowering to maturity compared to the traditional one. BRRI dhan50 exhibited superiority over the rest modern and traditional aromatic varieties in different growth parameters like leaf area index, tillers and leaves hill -1 at reproductive stages. BRRI dhan50 also showed superiority in case of yield parameters such as effective tillers hill panicle length (25 cm), filled grains panicle -1 (108), 1000-grain weight (23.57 g), biological yield (10.26 tha -1 ) and grain yield (5.99 tha -1 ). Rest of the modern varieties viz. BRRI dhan38 (3.85 tha 1 1 -1 -1 ), BRRI dhan37 and BRRI dhan34 (3.62 tha ) also provided higher grain yield compared to traditional Badshabhog (2.13 tha ), Dulabhog (1.75 tha -1 ), Chinigura (1.69 tha -1 ), Kalizira (1.56 tha ), Chiniatop (1.49 tha -1 ), and Begun Bichi (1.11 tha -1 ). Effective tillers hill , filled grains panicle -1 and 1000-grain weight mainly contributed to the higher grain yield of the modern aromatic rice varieties over the traditional varieties. -1 -1 (23.53), - -