Year 2017

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    STUDY OF GROWTH CHARACTERISTICS AND YIELD ATTRIBUTES OF INDIGENOUS AND HIGH YIELDING VARIETIES OF RICE IN AMAN SEASON
    (DEPARTMENT OF AGRICULTURAL BOTANY, SHER-E-BANGLA AGRICULTURAL UNIVERSITY, DHAKA-1207, 2017-12) ISLAM, ARIFUL
    The experiment was conducted at the research field of Sher-e-Bangla Agricultural University, Dhaka,Bangladesh during the period from July to December 2017, to study the growth, development and yield of some local and high yielding rice varieties during aman season. Ten rice varieties were used as treatments; among them seven were local varieties (Kanchancni, Chinisagar, Sunashail, Ranjay, Lohadang, Haldijan, Kohabinni) and three were high yielding varieties (HYV) (BRRI dhan46, BR11 and BRRI dhan51).The experiment was laid out in a Randomized Complete Block Design (RCBD) with four replications. There were significant difference among the data obtained from different growth, developmental and yield characters. At 25 and at 50 days after transplanting the highest plant height (62.21cm and 105.57cm respectively) was observed in Kanchancni. Highest plant height at 75 DAT (134.15cm) and at harvest (139.03cm) was found in Lohadang. Highest number of leaves hill 1 at 25 days after transplanting (26.00) was found in BRRI dhan46, at 50 DAT (56.67) and at 75 DAT (60.67) was found in Kohabinni, at harvest (34.87) in Ranjay . Highest number of tillers hill -1 at 25 DAT (6.67) was found in Ranjay, Haldijan, BRRI dhan46 respectively, at 50 DAT (16.33) was found highest in BRRI dhan46, at 75 DAT (11.64) was found highest in Sunashail, at harvest (25.00) was found highest in Kanchancni. Highest number of effective tiller (15.33) was found in BRRI dhan51, number of ineffective tiller (5.67) was found in Kanchancni and highest (17.67) total tiller was found in BRRI dhan51. Highest crop growth rate (54.86 g cm -2 day -1 ) and absolute grain growth rate (1.85 mg grain -1 day ) was found in Sunashail. Highest flag leaf area (56.20 m 2 ) was found in Lohadang. Pancle length (30.33 cm) was found highest in Haldijan, filled grain panicle -1 (113.67) was found highest in BRRI dhan46, unfilled grain panicle -1 (23.00) was found highest in Chinisagar, seed size (28.02 mg) was found highest in Haldijan, grain yield (3.62 tha -1 ) was found highest in BRRI dhan46, straw yield (4.17 tha -1 ) was found highest in Chinisagar, total biological yield (6.23 tha ) was found highest in Chinisagar, harvest index (59.73) was found highest in BRRI dhan46. Panicles hill -1 and filled grains panicle -1 mainly contributed to the higher grain yield of the high yielding varieties over the inbred. -1 -1 -
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    EVALUATION OF MORPHO-PHYSIOLOGICAL ATTRIBUTES AND YIELD OF TRADITIONAL AROMATIC RICE CULTIVARS IN AMAN SEASON
    (DEPARTMENT OF AGRICULTURAL BOTANY, SHER-E-BANGLA AGRICULTURAL UNIVERSITY, DHAKA -1207, 2017-12) HASSAN, S. M. ANAMUL
    The experiment was conducted at the Agronomy field of Sher-e-Bangla Agricultural University, Dhaka during July to December, 2017 in Aman season to investigate the morpho-physiological attributes and yield performance of nine traditional aromatic rice cultivars. The experiment comprised of one factor viz. Kalizira, Begun Bichi, Chinigura, Chiniatop-1, Sada Sonne, Khoi Sonne, Kataribhog, Badshabhog and Dulabhog (BR 5). The experiment was laid out in Randomized Complete Block Design (RCBD) with four replications. Significant variation was found on morphological, physiological, yield and yield contributing parameters in the traditional aromatic rice cultivars. The lowest grain yield (1.29 t ha -1 ) was obtained from Chiniatop-1. The highest leaves hill -1 (56.23) was recorded from Khoi Sonne. The lowest leaves hill (38.3) was obtained from Kataribhog. Maximum leaf area index of 6.03 was recorded in cultivar Chinigura followed by, Badshabhog (5.33) and Sada Sonne (5.01) and minimum of 3.64 was recorded with Kalizira at 60 DAT. At 45 DAT maximum LAR (116.75 cm 2 g -1 ) was recorded in Begun Bichi and minimum LAR (72.35 cm 2 g -1 ) in Chiniatop-1. Highest CGR of 28.23 g m day -1 was recorded by Dulabhog and minimum CGR was recorded in the variety Kalizira (21.02 g m -2 day -1 ). Badshabhog produced the second highest grain panicle -1 (156.30). Sada Sonne produced the lowest number of grains panicle -1 (53.63). Significant influence of different varieties was observed on 1000-grain weight. The highest 1000 grain weight (17.66 g) was recorded in Khoi Sonne. The lowest 1000 seed weight (9.23 g) was observed in Kalizira. Among the tested nine varieties Chinigura showed the highest grain yield (2.80 t ha -1 ) and the second highest grain yield in Begun Bichi (2.43 t ha ). While the lowest grain yield (1.29 tha -1 ) was obtained from Chiniatop-1. The Kataribhog showed the highest harvest index (41.49%). On the other hand, the lowest harvest index (28.94%) was obtained from Khoi Sonne. -1 -1 -2
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    A COMPARATIVE STUDY ON TRADITIONAL AND MODERN AROMATIC RICE VARIETIES IN AMAN SEASON
    (DEPARTMENT OF AGRICULTURAL BOTANY, SHER-E-BANGLA AGRICULTURAL UNIVERSITY, DHAKA-1207, 2017-12) ISLAM, MD. RAZAUL
    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), - -