Chinese Rice Planting Technique Ensures Optimum Wheat Yield in Bangladesh     

Md.NazimUddinMondal 《农业科学与技术》2002,3(3):18-20

Spring wheat is the second option of cereal crop to feed the growing population in Bangladesh. This crop can yield more than 5.0 ton ha-1 with optimum management on 6.1 million ha of land - 2.6 million ha with irrigation and 3.5 million ha without irrigation. However, the present average wheat yield is near 1.5 ton ha-1, and only 10% of the potential area are under wheat cultivation for various reasons.  相似文献   

Preservation of Disease-free Shoot Tips of Potato Germplasm through in vitro System     

M K Biswas　M Hossain　R Islam 《中国马铃薯》2005,19(6):321-325

In vegetatively propagated crops,once system ati-cally infected w ith a viral disease,the pathogen canpassed from one generation to the next[1].Especially inpotato,contam ination by a pathogen can severely re-duce the total yield of the crop[2].Traditionally,potatovarieties have been and still m aintained in a fieldgene bank.M aintenance of potato germ plasm in thefield is a m ajor consum er of tim e,m anpower andspace aside from diseases and environm ental stresses.The m ajor disadvantage of …  相似文献   

Increased Frequency of Double Ovulations after Induction of Luteolysis with Exogenous Prostaglandin F2α     

O.J. Ginther  Md. Al-Mamun  DVM 《Journal of Equine Veterinary Science》2009

The effect of induction of luteolysis by intramuscular treatment with prostaglandin F2α (PGF) on the frequency of double ovulations and formation of hemorrhagic anovulatory follicles (HAFs) was studied. The PGF (5 mg) was given 10 days after ovulation (n = 47 estrous cycles). No treatment or sham injection was used for control estrous cycles (n = 39). After treatment, the mares were scanned by transrectal ultrasonic imaging every 2 days until the largest follicle reached 25 mm and every day thereafter until the outcome of all follicles of at least 25 mm was determined. The frequency of two ovulations during the posttreatment ovulatory period was greater (P < .03) in the treated group (17%) than in the controls (3%). The combined frequency of two ovulations or one ovulation and one HAF also was greater (P < .002) in the treated group (30% vs. 5%). Equine veterinarians should be aware that PGF induction of luteolysis may increase the frequency of double ovulations or HAFs.  相似文献   

Isolation and inhibitory effect of anti-<Emphasis Type="Italic">Vibrio</Emphasis> substances from <Emphasis Type="Italic">Pseudoalteromonas</Emphasis> sp. A1-J11 isolated from the coastal sea water of Kagoshima Bay     

Carmelo S del Castillo  Md Iftekharul Wahid  Takeshi Yoshikawa  Taizo Sakaia 《Fisheries Science》2008,74(1):174-179

ABSTRACT:   Among several marine antagonistic bacteria isolated from the sea water of Kagoshima Bay, Pseudoalteromonas sp. A1-J11 was found to produce anti- Vibrio substances. The anti- Vibrio substances were extracted from the culture supernatant of the strain with chloroform and isolated using reverse-phase (Cosmosil 75C₁₈-OPN) column chromatography followed by high-pressure liquid chromatography (Mightysil RP-18 GP Aqua). Purified substances, designated as AVS-03 a , c and d showed similar ultraviolet absorption spectra with λ_max at 215, 235, 315 and 327 nm in methanol. AVS-03 d , the major anti- Vibrio substance, was thermostable up to 100°C and pH stable over a pH range higher than 4.0, and also showed strong inhibitory activities, specifically against Vibrio harveyi strains.  相似文献   

Effects of Animal Proteins in Practical Diets on Growth and Economic Performance of Climbing Perch,Anabas testudineus (Bloch)     

M. A. Kader  M. Bulbul  G. U. Ahmed  M. S. Hossain  S. Koshio 《Journal Of Applied Aquaculture》2013,25(2):166-176

A ten-week feeding trial was carried out to evaluate animal proteins, either alone or in combination (1:1:1), on the growth performances and economic benefit of climbing perch, Anabas testudineus. Four iso-proteinous (40%) diets were prepared, using fishmeal, protein concentrate, and meat and bone meal as major protein source in diets 1, 2 and 3, respectively, while diet 4 consisted of an equal proportion (1:1:1) of the above protein sources. Triplicate groups of fish (0.53 ± 0.02 g) were randomly stocked in 12 earthen ponds at a stocking density of 40,000 ha^?1. Fish fed diet 4 had significantly (P < 0.05) higher percent weight gain and SGR % per day^?1 compared to the fish fed diets 1, 2, or 3. Significantly higher apparent protein efficiency ratio (1.25) and lower apparent feed conversion ratio (2.00) were also observed in fish fed diet 4. Total yield (1,123 kg ha^?1) and net profit (Tk. 116,569 ha^?1) were also higher in fish fed diet 4. It can be concluded that the combination of fishmeal, protein concentrate, and meat and bone meal is more effective for climbing perch than any of the three protein sources alone.  相似文献   

Effect of dietary glucosylceramide from sea cucumber on plasma and liver lipids in cholesterol-fed mice     

Zakir Hossain  Tatsuya Sugawara  Kazuhiko Aida  Takashi Hirata 《Fisheries Science》2011,77(6):1081-1085

Various physiological functions of dietary glucosylceramides (GlcCer) have been reported, such as preventing colon cancer and improving skin barrier function. One potential GlcCer source used as a foodstuff is sea cucumber. In this study, our objective was to determine the effect of dietary GlcCer prepared from sea cucumber on plasma and liver lipids in cholesterol-fed mice. ICR mice were fed four different diets (control diet, sea cucumber GlcCer supplemented diet, high cholesterol supplemented diet, and high cholesterol + sea cucumber GlcCer supplemented diet). Dietary GlcCer decreased total cholesterol significantly in ICR mice. The mRNA expression of LDL receptor was increased significantly, while the expression of the gene CYP7A1, which is involved in bile acid formation, was decreased significantly compared with the control (diet without cholesterol). These results suggest that the expression of the cholesterol homeostasis gene in liver is modulated due to the cholesterol lowering effect of dietary GlcCer.  相似文献   

Evolution of river course and morphometric features of the River Ganga: A case study of up and downstream of Farakka Barrage     

Md Nawaj Sarif  Lubna Siddiqui  Md Safikul Islam  Neha Parveen  Monojit Saha 《国际水土保持研究(英文)》2021,9(4):578-590

River channel shifting in the deltaic regime is an unabated occurrence. Channel shifting has become one of the concerns as it influences land use/land cover along the riverbank in various ways. For the management of the river, it is indispensable to study the pattern of river course change both in qualitative and quantitative methods. This study is an attempt to understand the pattern of shifting and to quantify erosion and deposition of the river Ganga at upstream and downstream of Farakka Barrage during 1794–2017. The study has been carried out by using various historical maps, aerial photographs, satellite imagery, and remote sensing and GIS technique to understand the dynamic of the river. Over 223 years period shifting of the river accentuates the remarkable oscillation of the river. Perimeter of the river is determined to understand the area covered by the river course in the study area. To evaluate the meandering of the river sinuosity of the river has been computed in this study. The amount of erosion and deposition was calculated in this study by using ArcGIS 10.6. The study found a higher amount of erosion at the east bank where Manikchak, Kaliachak II and Kaliachak III blocks are situated between 1965 and 2017. At the west bank of the river, especially the Rajmahal block, the occurrence of deposition was remarkable during the same period.  相似文献   

污泥对苗圃生长的银合欢幼苗发芽和初期长势的影响   总被引：1，自引：1，他引：0  

G.M.A.Iqbal  S.M.S.Huda  M.Sujauddin  M.K.Hossain 《林业研究》2007,18(3)

研究了不同类型的污泥(城市的、工业的和住宅污泥)对苗圃生长的银合欢幼苗田间萌发、生长和分枝的影响.播种前先将不同类型污泥的混合物与养分匮乏的自然林土壤混合.播种的3和6月后,记录幼苗大田发芽、分枝状况和其他物理生长参数(枝条或根长、活力指数、茎直径、叶片数、分枝或根鲜重和干重、总的生物量干重增长)等.与对照幼苗相比,混合污泥的土壤中生长的幼苗田间发芽、分枝状况及其他生长参数均发生了显著变化.与其它条件生长的幼苗相比,住宅污泥与土壤混合(1:1)条件生长的3月龄和6月龄幼苗分枝数和分枝鲜或干重均最高.就生长参数而言,住宅污泥与自然林土壤混合(1:1)生长的幼苗长势最好.研究表明:退化的土壤补偿以住宅污泥可促进银合欢的田间发芽、生长以及分枝的形成.图1表3参29.  相似文献