Search Result of "Mohammed, F."

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ผลงานตีพิมพ์ในวารสารวิชาการ

Seed Transmission and Epidemics of Colletotrichum lindemuthianum in the Major Common Bean

ผู้แต่ง:ImgDr.Somsiri Sangchote, Associate Professor, ImgMohammed Yesuf,

วารสาร:

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Occurrence and Distribution of Major Seedborne Fungi Associated with Phaseolus Bean Seeds in Ethiopia)

ผู้เขียน:ImgMohammed YESUF, Imgดร.สมศิริ แสงโชติ, รองศาสตราจารย์

สื่อสิ่งพิมพ์:pdf

Abstract

A total of 245 seed samples of Phaseolus bean; 172 common beans, 51 climbing beans and 22 green beans were collected from various bean growing areas during 2003 crop season. The incidence and severity of seed infection by the major fungal diseases of bean varied between localities, bean types and cropping practices. Thirteen seed-borne fungal pathogens of different genus were identified from seed samples collected from the major bean growing regions of Ethiopia. The incidence of different seedborne fungi ranging between 0.2 to 14.5% was found to vary from location to location and growing conditions. Among them, Colletotrichum lindemuthianum, Phaeoisariopsis griseola, and Ascochyta phaseolorum were the most widespread and damaging seedborne fungal pathogens associated with Phaseolus bean seeds in Ethiopia. From the total seed samples collected, 26.2%, 19.6% and 13.6% of common bean, climbing bean and green bean respectively were infected by C. lindemuthianum, whereas infection by P. griseola was 18.6% and 15.7% on common bean and climbing beans seeds respectively. Green bean seeds were not infected by the latter two fungi. Seeds collected from south, southwest, and western part of Ethiopia showed heavy seed infection by these major fungal pathogens, whereas seeds produced in dry areas with minimum rainfall or under irrigation showed very low seed infection. Phytophthora rot of beans caused by Phytophthora sp. was also detected from green bean pods and immature seeds produced under irrigation in the central rift valley of the country. The geographic distribution of major seed-borne fungi of Phaseolus beans was mapped.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 039, Issue 2, Apr 05 - Jun 05, Page 216 - 225 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Seed Transmission and Epidemics of Colletotrichum lindemuthianum in the Major Common Bean Growing Areas of Ethiopia)

ผู้เขียน:ImgMohammed YESUF, Imgดร.สมศิริ แสงโชติ, รองศาสตราจารย์

สื่อสิ่งพิมพ์:pdf

Abstract

The seed-borne nature, mechanism of transmission and disease development of Colletotrichum lindemuthianum in the field was studied in three major common bean growing areas including Arssinegelle, Ambo and Bako in Ethiopia. The relationship between level of seed infection by Colletotrichum lindemuthianum, and its transmission to the seedlings in the field and greenhouse was studied. Multiple regression analysis showed positive and linear relationship with high coefficient of determination (R2 =0. 98, 0.91, 0.86) between seed infection and early seedling infection at Bako, Ambo and Arssinegelle respectively. During germination of the infected seeds, the pathogen was transferred from seed coat, by colonizing the cotyledons, radicle and plumule of the emerging seeds. Pre- and postemergence seedling mortalities were very common both in the field and greenhouse. Sporulation of C. lindemuthianum from acervuli was observed on the cotyledons of un-germinated seed. Moreover, sporulation of C. lindemuthianum on the growing seedling was common at Bako and Ambo where there was frequent rainfall during the crop season. Anthracnose inoculum in the field transferred to the young pods, consequently enabled the pathogen to grow through the entire pod surface, showing sunken anthracnose lesions, and infected the seed coats of the newly formed seed. Seedling infection and disease epidemic in the field varied between different bean growing locations. Seed infection by C. lindemuthianum played the major role as the main source of primary inoculum of bean anthracnose and further disease epidemic in the field.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 039, Issue 1, Jan 05 - Mar 05, Page 34 - 45 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Estimation of Direct Genetic Effects on Milk Yield and Lactation Length in the Aownoi Dairy Cooperative)

ผู้เขียน:ImgMohammed Endris, Imgดร.ศรเทพ ธัมวาสร, ศาสตราจารย์, ImgChaiwat Wongwan, Imgดร.พรรณวดี โสพรรณรัตน์, รองศาสตราจารย์, Imgดร.สมเกียรติ ประสานพานิช, รองศาสตราจารย์

สื่อสิ่งพิมพ์:pdf

Abstract

This study aimed to estimate the direct genetic effects on actual milk yield and lactation length of Holstein crossbred dairy cows in the Aownoi Dairy Cooperative. The data comprised 869 lactation records from 850 cows that had calved during 2009–2010. The data were analyzed by the Restricted Maximum Likelihood Method and applying the Average Information Algorithm (AIREML) using univariate analysis. The factors having a direct effect on actual milk yield and lactation length were the year-season of calving (YS), the breed group of the cows and the lactation number. The investigated traits were lactation length and actual milk yield. The results showed that the overall mean (? SE) for milk yield and lactation length was 4,484.84 ? 13.60 kg.cow-1.lactation-1 and 376.94 ? 0.34 d, respectively. The lactation number had a signifi cant effect on the actual milk yield but there was no signifi cant effect of breed group, lactation number and year-season of calving on the lactation length. Estimates of heritability for the actual milk yield and lactation length were 0.22 ? 0.08 and 0.26 ? 0.09, respectively.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 046, Issue 4, Jul 12 - Aug 12, Page 546 - 553 |  PDF |  Page 

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ที่มา:วิทยานิพนธ์ ปริญญาเอก (จาก: บัณฑิตวิทยาลัย มก. และสำนักหอสมุด มก.)

หัวเรื่อง:Seedborne Nature of Colletotrichum lindemuthianum and Its Epidemic on Common Beans in the Major Bean Growing Areas of Ethiopia

ผู้เขียน:ImgMohammed YESUF

ประธานกรรมการ:Imgดร.สมศิริ แสงโชติ, รองศาสตราจารย์

กรรมการวิชาเอก:Imgนางสุเทวี ศุขปราการ, รองศาสตราจารย์, Imgดร.จิระเดช แจ่มสว่าง, รองศาสตราจารย์

สื่อสิ่งพิมพ์:pdf

Abstract


Dissertation/Thesis Info
Abstract  (cache) |  Full text  (cache)  | Page  (Info)

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ผลงานตีพิมพ์ในวารสารวิชาการ

Occurrence and distribution of major seedborne fungi associated with Phaseolus bean seeds in Ethiopia

ผู้แต่ง:ImgDr.Somsiri Sangchote, Associate Professor, ImgMohammed Yesuf,

วารสาร:

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา สังคมศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Optimal Rotation Interval of Akashmoni (Acacia auriculiformis) Plantations in Bangladesh)

ผู้เขียน:ImgSheikh Sirajul Islam, ImgMohammed Syedul Islam, ImgMd. Abu Taher Hossain, ImgZahirul Alam

สื่อสิ่งพิมพ์:pdf

Abstract

The rotation interval for akashmoni (Acacia auriculiformis) plantations in Bangladesh is discussed for fuel wood and timber under strip plantation, woodlot, and community forest management systems. The rotation interval was calculated on the basis of the market price, the market mechanism, and the costs and returns of akashmoni plantations during 2000–2001. Considering the present management system, the mode of marketing, the market mechanism, and all economic criteria, the rotation interval of akashmoni species may be fixed at 8 years for fuel wood and 13–15 years for timber. The average market price of round wood and fuel wood was US $147.24 per m3 and US $0.72 per md (1 md = 37.3261 kg), respectively. The elimination rate varied from 5 to 90 percent depending on the plantation, the year, and the location, with values of 5 percent in the areas of Dinajpur, Bogra, and Dhaka and more than 50 percent in Tangail and Jessore. If the Net Present Value is considered as the rotation criterion, the rotation interval may be prescribed at age 15 years for timber. If the Internal Rate of Return and the Land Expectation Value are considered, the rotation interval may be fixed at 13 years for timber. Considering available data from plantations aged between 5 and 17 years, the recommended optimum rotation interval for timber and fuel wood was 15 and 8 years, respectively. At 15 years, the plantation was mature for timber use while fuel wood was a priority at 8 years as it was not necessary to use mature plantation wood.

Article Info
Kasetsart Journal of Social Sciences -- formerly Kasetsart Journal (Social Sciences), Volume 034, Issue 1, Jan 13 - Apr 13, Page 181 - 190 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Genotype by Region Interaction on Milk Production Traits of Holstein Crossbred Dairy Cows in Thailand)

ผู้เขียน:ImgMohammed Endris, Imgดร.ศรเทพ ธัมวาสร, ศาสตราจารย์, Imgดร.พรรณวดี โสพรรณรัตน์, รองศาสตราจารย์, Imgดร.สมเกียรติ ประสานพานิช, รองศาสตราจารย์

สื่อสิ่งพิมพ์:pdf

Abstract

This study was designed to examine the existence of a genotype ? region interaction on milk production traits in Holstein crossbred dairy cows in Thailand. The data set for this study was provided by Department of Livestock Development of Thailand. The data were divided into five regions (Central, East, North, Northeast and West). The factors having genotype ? region interaction on milk production traits were region, year-season of calving, breed group and breed group ? region interaction. The investigated traits were actual total milk yield (ATMY), 305 d milk yield (MY305) and adjusted 305 d milk yield (AJ305), respectively. The breed group of cow had a significant (P < 0.05) effect on MY305 and a highly significant (P < 0.01) effect on ATMY and AJ305 while the effect of year-season of calving and region had very highly significant (P < 0.001) effects for all the studied traits. Breed group ? region had a highly significant interaction (P < 0.01) for the milk production traits. The estimated heritability for the milk production traits ranged between 0.17 to 0.24 for the Central region and 0.29 to 0.57 for the Eastern region. It was suggested that the performance of breed group of cows from different regions should differ significantly or there was a genotype ? region interaction in this particular study.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 047, Issue 2, Mar 13 - Apr 13, Page 228 - 237 |  PDF |  Page 

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ผลงานตีพิมพ์ในวารสารวิชาการ

Occurrence and Distribution of Major Seedborne Fungi Associated with Phaseolus Bean Seeds in Ethiopia

ผู้แต่ง:ImgMohammed Yesuf, ImgDr.Somsiri Sangchote, Associate Professor,

วารสาร:

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