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RISS 인기검색어
- 검색키워드
- 저자 : Abdul Mannan Akanda (검색결과 6 건)
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Ananya Prova,Abdul Mannan Akanda,Shaikhul Islam,Md. Motaher Hossain 한국식물병리학회 2018 Plant Pathology Journal Vol.34 No.5
Stems and pods of hyacinth bean cultivated in a farmer’s field in Gazipur District, Bangladesh, were found rotted in nearly 5% hyacinth bean plants. A fungus having fluffy mycelium and large sclerotia was isolated from affected tissues. Combined results of morphological, molecular and pathological analyses identified the fungus as Sclerotinia sclerotiorum (Lib) de Bary. Inoculating the fungus on healthy hyacinth bean plants and pods reproduced the symptoms previously observed in the field. The three isolates obtained from naturally infected plants were cross inoculated in hyacinth bean, okra and African-American marigold and they were pathogenic to these hosts. The optimum temperature and pH for its growth were 20°C and pH 5.0, respectively. Sclerotial development was favored at pH 5.0. Sucrose and mannitol were the best carbon sources to support hyphal growth, while glucose was the most favourable for sclerotial development. The hyacinth bean genotypes, HB-82 (Rupban Sheem) and HB-102 were found highly resistant, while HB-94 (Ashina) was moderate resistant to the fungus. Finally, S. sclerotiorum was sensitive to Bavistin, Dithane M-45 and Rovral fungicides and Ca in the form of CaCl2. This observation could possibly aid in eliminating field loss in hyacinth bean caused by an emerging pathogenic fungus S. sclerotiorum.
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Prova, Ananya,Akanda, Abdul Mannan,Islam, Shaikhul,Hossain, Md. Motaher The Korean Society of Plant Pathology 2018 Plant Pathology Journal Vol.34 No.5
Stems and pods of hyacinth bean cultivated in a farmer's field in Gazipur District, Bangladesh, were found rotted in nearly 5% hyacinth bean plants. A fungus having fluffy mycelium and large sclerotia was isolated from affected tissues. Combined results of morphological, molecular and pathological analyses identified the fungus as Sclerotinia sclerotiorum (Lib) de Bary. Inoculating the fungus on healthy hyacinth bean plants and pods reproduced the symptoms previously observed in the field. The three isolates obtained from naturally infected plants were cross inoculated in hyacinth bean, okra and African-American marigold and they were pathogenic to these hosts. The optimum temperature and pH for its growth were $20^{\circ}C$ and pH 5.0, respectively. Sclerotial development was favored at pH 5.0. Sucrose and mannitol were the best carbon sources to support hyphal growth, while glucose was the most favourable for sclerotial development. The hyacinth bean genotypes, HB-82 (Rupban Sheem) and HB-102 were found highly resistant, while HB-94 (Ashina) was moderate resistant to the fungus. Finally, S. sclerotiorum was sensitive to Bavistin, Dithane M-45 and Rovral fungicides and Ca in the form of $CaCl_2$. This observation could possibly aid in eliminating field loss in hyacinth bean caused by an emerging pathogenic fungus S. sclerotiorum.
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New Sources of Resistance to Cucumber mosaic virus in Capsicum annuum
Md. Siddiqur Rahman,Abdul Mannan Akanda,Ismail Hossain Mian,Md. Khurshed Alam Bhuiyan,Md. Motaher Hossain 한국작물학회 2016 Journal of crop science and biotechnology Vol.19 No.3
Cucumber mosaic virus (CMV) is the most serious virus disease affecting chilli (Capsicum annuum L.) worldwide and the absence of natural resistance makes management of CMV outbreaks difficult. The characterization of improved sources of resistance to CMV in chilli would facilitate the development of commercially acceptable chilli varieties with adequate levels of CMV resistance. A total of 30 chilli genotypes were evaluated for their reaction to CMV in field and artificial inoculated conditions during 2010-2011 and 2011-2012. Large differences were observed among genotypes for disease incidence, severity indexes, and yield losses. Based on observed data, genotype CA23 (Noakhali) was identified as resistant, while CA12 (Comilla-2) was categorized as moderately resistant to CMV both in natural and inoculated conditions. Enzyme-linked immunosorbent assay absorbance values of samples taken from CMV-infected leaves corresponded well with visible viral symptoms for these genotypes. The identified C. annuum CA23 and CA12 genotypes represent previously undescribed and potentially useful sources of CMV resistance.
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Mahbuba NASRIN,Md Ruhul Amin,Md. Ramiz Uddin MIAH,Abdul Mannan Akanda,Md Giashuddin MIAH,Ohseok KWON,Sang Jae Suh 한국곤충학회 2021 Entomological Research Vol.51 No.6
The abundance, infestation, and severity of the mite Polyphagotarsonemus latus were studied on the chili (Capsicum frutescens L., Solanaceae) varieties BARI Morich 1, BARI Morich 2, BARI Morich 3, BINA Morich 1, and Bogura Morich from November 2017 to June 2018. The abundance of mites was found from 05 February to 28 May, and the peak abundance on the chili varieties occurred on 09 April. Mite population showed the highest and the lowest occurrences on BINA Morich 1 and BARI Morich 2, respectively. The abundance of P. latus on the chili varieties showed significant positive correlation with temperature, and the relationship with relative humidity and rainfall was negative. Mite population was negatively correlated with leaf trichomes of all the chili varieties, and depicted significant negative correlation with the leaf area of BARI Morich 1, BARI Morich 3 and BINA Morich 1. The number of flower of the chili varieties BARI Morich 3 and BINA Morich 1, and number of fruit of the varieties BARI Morich 1, BARI Morich 3, BINA Morich 1 and Bogura Morich showed significant negative correlation with mite population. The chili varieties demonstrated significant differences within their leaf curl indices (LCI), and infestation levels of flower and fruit. The BARI Morich 2 revealed the lowest level of mite infestation on flowers and fruits. The varieties BARI Morich 1, BARI Morich 2, and Bogura Morich contained <50% LCI, which were categorized as moderately resistant, and the rest varieties were categorized as susceptible due to >50% LCI.
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Aphid population abundance and pestiferous effect on various bean plant species
Amin Md Ruhul,Sharmin Mohsen Ara,Miah Md Ramiz Uddin,Akanda Abdul Mannan,Suh Sang Jae,Kwon Yong Jung,Kwon Ohseok 한국곤충학회 2020 Entomological Research Vol.50 No.6
The population abundance, infestation, and harmful effects of the aphid Aphis craccivora Koch (Hemiptera: Aphididae) were studied on four bean plant species, namely the country bean (Lablab purpureus var. BARI Seem 1), the yard-long bean (Vigna sesquipedalis var. BARI Borboti 1), the hyacinth bean (Dolichos lablab var. BARI Seem 6), and the bush bean (Phaseolus vulgaris var. BARI Jar Seem 3). Aphid abundance and infestation on the leaves, inflorescences, flowers, and pods differed significantly among the bean plant species, with P. vulgaris and V. sesquipedalis having the lowest and highest results, respectively. Aphid severity grade and the number of trichomes of the bean plant species were negatively correlated. The duration of the growth stages among the bean plant species were significantly different, with V. sesquipedalis having the shortest durations. Aphid abundance and infestation significantly affected the physical and phytochemical characteristics of the bean plant species. The highest reduction of number of leaves, flower inflorescences, and pod inflorescences per plant, and moisture and chlorophyll content in the leaves was found in L. purpureus. The results for V. sesquipedalis revealed the highest reduction in plant height, seed weight, and pH, while those of D. lablab showed the highest reduction in leaf area.
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