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RISS 인기검색어
- 검색키워드
- 저자 : Md. Aminul Haque (검색결과 5 건)
- 무료
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Md. Anisuzzaman Chowdhury,고해주,이환,Md. Aminul Haque,박일선,이동성,우은란 대한약학회 2017 Archives of Pharmacal Research Vol.40 No.3
Previous phytochemical investigations of Akebiae compound 1 and the inhibitory effects of components fromAkebiae Caulis on Ab42 fibrillogenesis. Caulis resulted in the isolation of triterpenes, triterpeneglycosides, phenylethanoid glycosides and megastigmaneglycoside. Amyloid beta (Ab), the main component of thesenile plaques detected in Alzheimer’s disease, induces celldeath. However, only a limited number of studies haveaddressed the biological and pharmacological effects ofAkebiae Caulis. In particular, the inhibitory activity ofAkebiae Caulis against Ab42 fibrillogenesis remainsunclear. Herein, a new triterpene glycoside, akequintoside F(1), along with nine known compounds pulsatilla saponin A(2), collinsonidin (3), akebonic acid (4), hederagenin (5),1-(30,40-dihydroxycinnamoyl) cyclopentane-2,3-diol (6),asperosaponin C (7), leontoside A (8), quinatic acid (9), andquinatoside A (10) were isolated from Akebiae Caulis usingrepeated column chromatography with silica gel, LiChroprepRP-18, and MCI gel. The chemical structures ofcompounds 1–10 were illustrated based on 1D and 2D NMRspectroscopy, including 1H-1H COSY, HSQC, HMBC andNOESY spectroscopic analyses. Compound 1 a novelcompound and known compounds 6 and 7 were isolated forthe first time from this plant. Among these compounds, 1, 3,4, 5 and 7 displayed significant inhibitory effects on Ab42induced fibrillogenesis. We present the first report of new
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Effect of Crop Establishment and Weed Control Method on Productivity of Transplanted aman Rice
Ali, Mohammad,Haque Bir, Md. Shahidul,Rahman, Md. Habibur,Ayesha, Sultana Kaniz,Hoque, Aminul,Harun-Ar-Rashid, Md.,Islam, Md. Rashidul,Park, Kee Woong The Korean Society of Weed ScienceThe Turfgrass So 2018 Weed & Turfgrass Science Vol.7 No.2
This experiment was conducted to find the most suitable crop establishment method and weed management practices for transplanted aman rice in Bangladesh. Rice variety Bangladesh Rice Research Institute (BRRI) dhan44 was used as planting materials where three crop establishment methods ($T_1$: direct wet seeding by drum seeder; $T_2$: hand broadcasting; $T_3$: transplanting) and four weeding options ($W_1$: Hand weeding (HW); $W_2$: BRRI weeder+HW; $W_3$: Herbicide+HW; and $W_4$: no weeding) were tested. Among the crop establishment methods, the highest grain yield ($5.12t\;ha^{-1}$) was obtained with the $T_3$, while the highest benefit cost ratio (BCR) of 2.08 was found in $T_2$. In case of the weed management method, $W_1$ showed superior results on the plant $density/m^2$ (139.66) at 60 days after transplanting (DAT), grain yield ($4.97t\;ha^{-1}$), and BCR (2.03). On the other hand, the highest plant dry matter (36.20 g) at 60 DAT and the highest yield ($6.10t\;ha^{-1}$) were obtained in a $T_3W_1$ combination. The results of this study show that the productivity of rice during aman season could be most significantly increased with the use of transplanting ($T_3$) alone, hand weeding ($W_1$) alone, or a combination of the two methods ($T_3W_1$).
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Effect of Crop Establishment and Weed Control Method on Productivity of Transplanted aman Rice
Mohammad Ali,Md. Shahidul Haque Bir,Md. Habibur Rahman,Sultana Kaniz Ayesha,Aminul Hoque,Md. Harun-Ar-Rashid,Md. Rashidul Islam,박기웅 한국잔디학회 2018 Weed & Turfgrass Science Vol.7 No.2
This experiment was conducted to find the most suitable crop establishment method and weed management practices for transplanted aman rice in Bangladesh. Rice variety Bangladesh Rice Research Institute (BRRI) dhan44 was used as planting materials where three crop establishment methods (T1: direct wet seeding by drum seeder; T2: hand broadcasting; T3: transplanting) and four weeding options (W1: Hand weeding (HW); W2: BRRI weeder+HW; W3: Herbicide+HW; and W4: no weeding) were tested. Among the crop establishment methods, the highest grain yield (5.12 t ha-1) was obtained with the T3, while the highest benefit cost ratio (BCR) of 2.08 was found in T2. In case of the weed management method, W1 showed superior results on the plant density/m2 (139.66) at 60 days after transplanting (DAT), grain yield (4.97 t ha-1), and BCR (2.03). On the other hand, the highest plant dry matter (36.20 g) at 60 DAT and the highest yield (6.10 t ha-1) were obtained in a T3W1 combination. The results of this study show that the productivity of rice during aman season could be most significantly increased with the use of transplanting (T3) alone, hand weeding (W1) alone, or a combination of the two methods (T3W1).
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Variety and Seedling Age Affects Fine Rice Yield
Amin, A.K.M. Khusrul,Haque, M. Aminul,Akhtaruzzaman, Md,Chowdhury, Nazmun Nahar The Korean Society of Crop Science 2007 Korean journal of crop science Vol.52 No.2
The research was conducted with the aim of determining effects of seedling age on the yield of four fine rice varieties viz., Kalizura, Tulshimala, BRRI (Bang-ladesh Rice Research Institute)-37 and BRRI-38. The seedling of different ages such as 15, 25, 35 and 45 days were transplanted on the same day maintaining $25cm{\times}15cm$ spacing. The experiment was laid out in a randomized complete block design with three replications. The yield and yield contributing characters were influenced by seedling age, variety and their interaction. BRRI-38 gave the highest number of effective tillers $hill^{-1}$, panicle length, total spikelets $panicle^{-1}$, grains $panicle^{-1}$, 1000-grains weight and grain yield. Likewise, yield and yield contributing characters were the highest in 35 days old seedling. On the other hand, the variety (BRRI-38) with the same age as of seedlings 35 days old seedlings was found superior to other interactions, but, in the production of grains $panicle^{-1}$ and 1000-grains weight there was no significant effect in this interaction. From the findings it may be inferred that BRRI-38 with 35 days old seedlings produced the highest grain yield.
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Variety and Seedling Age Affects Fine Rice Yield
A. K. M. Khusrul Amin,M. Aminul Haque,Md Akhtaruzzaman,Nazmun Nahar Chowdhury 韓國作物學會 2007 Korean journal of crop science Vol.52 No.2
The research was conducted with the aim of determining effects of seedling age on the yield of four fine rice varieties viz., Kalizura, Tulshimala, BRRI (Bang-ladesh Rice Research Institute)-37 and BRRI-38. The seedling of different ages such as 15, 25, 35 and 45 days were transplanted on the same day maintaining 25cm~times15cm spacing. The experiment was laid out in a randomized complete block design with three replications. The yield and yield contributing characters were influenced by seedling age, variety and their interaction. BRRI-38 gave the highest number of effective tillers hill-1 , panicle length, total spikelets panicle-1 , grains panicle-1 , 1000-grains weight and grain yield. Likewise, yield and yield contributing characters were the highest in 35 days old seedling. On the other hand, the variety (BRRI-38) with the same age as of seedlings 35 days old seedlings was found superior to other interactions, but, in the production of grains panicle-1 and 1000-grains weight there was no significant effect in this interaction. From the findings it may be inferred that BRRI-38 with 35 days old seedlings produced the highest grain yield.
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