Comparison of structural diversity of tree-crop associations in Peripheral and Buffer zones of Gachabari Sal forest area, Bangladesh     

M. M. Rahman  H. Vacik  F. Begum  A. Nishad  K. K. Islam 《林业研究》2007,18(1):23-26

The structural diversity of different tree-crop associations were studied at Gachabari Sal forest area of Madhupur Garh on Buffer and Peripheral Zone during 2006. The total density, basal area of trees in the Buffer and Peripheral Zone were 155.5 trees·hm^-2, 795.4 trees·hm^-2 and 3.9 m^2·hm^-2, 5.8 m^2·hm^-2, respectively. No regeneration and natural trees were found in Peripheral Zone and the Zone is totally occupied by exotic species where the Buffer Zone comprised of both natural and exotic trees. The Peripheral Zone belonged to younger and smaller trees whereas the Buffer Zone belonged to mixture of smaller, taller, younger and mature trees simultaneously. For the practicing of different agroforestry systems both Zones have lost their original characters of Sal forest.  相似文献   

Antibacterial compounds from the flowers of Alangium salviifolium   总被引：2，自引：0，他引：2  

Anjum A  Ekramul Haque M  Mukhlesur Rahman M  Sarker SD 《Fitoterapia》2002,73(6):526-528

1-Methyl-1H-pyrimidine-2,4-dione and 3-O-beta-D-glucopyranosyl-(24beta)-ethylcholesta-5,22,25-triene, isolated from the flowers of Alangium salviifolium, showed remarkable antibacterial activities against a number of Gram-positive and Gram-negative bacterial species.  相似文献   

Antidiarrhoeal activity of the bark extract of Careya arborea Roxb     

Rahman MT  Khan OF  Saha S  Alimuzzaman M 《Fitoterapia》2003,74(1-2):116-118

The methanol extract of the Careya arborea Roxb. bark significantly reduced castor oil-induced diarrhoea in mice. This effect supports the local traditional use of the plant against diarrhoea.  相似文献   

Alkaloids of Zanthoxylum budrunga     

Ahmad MU  Rahman MA  Huq E  Chowdhury R 《Fitoterapia》2003,74(1-2):191-193

Pseudophrynamine, lunacridine and the new compound 2-(2',4',6'-trimethyl-heptenyl)-4-quinozolone were isolated from the leaves of Zanthoxylum budrunga.  相似文献   

Antimicrobial and cytotoxic constituents from the seeds of Annona squamosa   总被引：1，自引：0，他引：1  

Mukhlesur Rahman M  Parvin S  Ekramul Haque M  Ekramul Islam M  Mosaddik MA 《Fitoterapia》2005,76(5):484-489

Annotemoyin-1, Annotemoyin-2, squamocin and cholesteryl glucopyranoside were isolated from the seeds of Annona squamosa. These compounds and plant extracts showed remarkable antimicrobial and cytotoxic activities.  相似文献   

People’s attitude and use of forestland: Co-evolution of forest administration in Bangladesh     

Mohammad Ali  M. Alamgir Kabir  A. T. M. Rafiqul Hoque 《Small-Scale Forestry》2006,5(2):271-286

This paper explores the influence over time of past policies on people’s attitudes towards the use of forestland in Bangladesh. The discourses of the attitudes of people were captured from the observed social tradition towards forest resources. Forests were reserved systematically and solely through the Forest Department. The conservation processes were not participatory, and rights and tenure were strictly controlled. People were socially excluded and alienated from the forest, and the socio-political factors stimulated negative attitudes among people. Forests were considered to be government property, and therefore managing forests was the responsibility of the government. People only used forest resources to meet their own requirements, either with formal permission or illegally. This situation continued even after the independence of Bangladesh in 1971. As a result, the forests of Bangladesh have been degraded heavily in recent decades.  相似文献   

水黄皮叶斑病的成因、严重性及杀菌剂防止     

M.A.U. Mridha  F.Jabbar  M. K. Bhuiyan  M. Rahman  F. Akter  S. Dewan 《林业研究》2007,18(3)

对孟加拉国4个苗圃(IFES、IFESCU、BFRI和ANC)内水黄皮叶斑病症状和严重性进行了调查,结果表明:IFESCU苗圃内叶斑病侵染率及致病指标最高、BFRI次之、ANC最低.与叶斑病相关联的组织从发病植株分离出来,被分离的真菌形成致病性.结果证实胶孢炭疽菌即为致病菌.观察了杧果炭疽病菌丝体生长抑制性并对杀菌剂(Bavistin, Cupravite and Dithane M-45) 有效性和浓度(0.05, 0.10, 0.50, 1.00, 1.50 和 2.00%)进行了鉴定.0.05% Bavistin和Cupravite潜伏8天后,菌丝体生长分别处于最低和最高水平.结果表明:Bavistin杀菌效果最好、Diathane M-45次之,Cupravite对菌丝体生长的抑制作用最低.图1表4参27.  相似文献   

The effect of Armillatox on the mycelial growth and rhizomorph production by Armillariella mellea in culture     

A. Rahman 《Forest Pathology》1978,8(2):75-83

Cultural studies have shown that unautoclaved Armillatox, a proprietary fungicide, when incorporated in an agar medium killed inocula of A. mellea mycelia at 550 ppm concentration and rhizomorphs at 50 000 ppm. Evidence on detoxification of Armillatox in agar culture and its probable role on new rhizomorph production is reported. Although Armillatox at 10000 ppm appeared to cause profuse production of new rhizomorphs in liquid culture, the difference in the dry weight between the treated and the control Samples has been found to be statistically insignificant.  相似文献   

The severity and cause of leaf spot disease of Pongamia pinnata L. and fungicidal control of the pathogen     

M.A.U. Mridha　F. Jabbar　M. K. Bhuiyan　M. Rahman　F. Akter　S. Dewan 《林业研究》2007,18(3):236-240

A survey on the symptom and severity of the leaf spot disease of Pongamia pinnata L. was conducted in the nurseries of the Institute of Forestry and Environmental Sciences, University of Chittagong （IFESCU）, Bangladesh Forest Research Institute （BFRI） and Aronnak Nursery in Chittagong. The highest infection percentage and disease index were found in IFESCU nursery, followed by BFRI and the lowest was recorded in Aronnak nursery. The associated organism of leaf spot disease of P. pinnata was isolated from the diseased plant parts and the pathogenicity was established with the isolated fungus. Colletorichum gloeosprioides Penz was proved to be pathogenic. The inhibition of mycelial growth of C. gloeosporioides was observed and identified as suitable fungicides （Bavistin, Cupravite and Dithane M-45） and doses （0.05, 0.10, 0.50, 1.00, 1.50 and 2.00）. The lowest and highest mycelial growth were respectively found on Bavistin and on Cupravite at the concentration of 0.05 after 8th day of incubation. It indicates that out of the three tested fungicides, Bavistin showed most effective, followed by Diathane M-45, and Cupravite was ineffective for its very little inhibition on mycelial growth.  相似文献   

Analgesic sesquiterpene dilactone from Mikania cordata.     

M Ahmed  M T Rahman  M Alimuzzaman  J A Shilpi 《Fitoterapia》2001,72(8):919-921

The crude extract of Mikania cordata (1 and 3 g/kg, p.o.) and deoxymikanolide (1) (10 mg/kg, p.o.) significantly inhibited acetic acid-induced writhing in mice. Three other sesquiterpene dilactones isolated from the same plant, namely mikanolide, dihydromikanolide and scandenolide, did not show significant analgesic activity.  相似文献