Journal of the Asiatic Society of Bangladesh, Science, 2013
A survey on the incidence and severity of common scab (Streptomyces sp.) of potato was made in th... more A survey on the incidence and severity of common scab (Streptomyces sp.) of potato was made in the major potato growing districts of Bangladesh during the cropping season of 2007-2008. A total of 150 fields was surveyed for collection of potato common scab infected samples. It was observed that there was a lot of variation in disease severity and its incidence in different districts of Bangladesh. Highest per cent scab incidence (71.41 %) was recorded in Kahalo Upazila (Bogra) and lowest (13.79 %) in Pirgacha Upazila (Rangpur). Disease incidence also varied among the tested varieties namely, Cardinal, Diamant, Granola, Binella and Raja. Highest incidence was observed in Cardinal (54.08 %) followed by Binella (50.71 %) and it was lowest in Raja (3.07 %). Cardinal and Binella were found to be highly susceptible and Raja was resistant to common scab disease. Diamant, the commercial variety showed medium susceptible reaction to the disease. J. Asiat. Soc. Bangladesh, Sci. 39(1): 35-41, ...
The biological control of plant diseases has recently been gaining appreciable importance to plan... more The biological control of plant diseases has recently been gaining appreciable importance to plant pathologists. Intensive research has been done in this field to avoid the hazardous impact of pesticides and agro-chemicals on ecosystem. The biological agents, the mycoparasites have also attained a significant position. It has been suggested that efforts should be made to investigate the biological control of plant diseases through parasitism and predation. Tuberculina spp. are well-known mycoparasite and lot of research has been done on mycoparasitism of this fungus. Tuberculina persicina is contact parasite forming neither haustoria nor other intercelluler structures. However, at contact areas between T. persicina and its hosts, distinct interfungal interactions are observed. The host cells are dissolved at the point of contact. Present study was made to evaluate the antagonistic efficiency and mycoparasitic activity of Tuberculina persicina (Ditm. ex Fr.) Sacc. against rust fungi ...
A total of six species of fungi were isolated from Citrus lemon. The isolated fungi were Aspergil... more A total of six species of fungi were isolated from Citrus lemon. The isolated fungi were Aspergillus niger, Candida krusei, Fusarium sp., Rhizopus stolonifer, Penicillium digitatum and Trichoderma sp. during the period of April 2013 to December 2013. Ethanol leaf extracts of five plants viz. Azadirachta indica L., Citrus limon L., Mangifera indica L., Polyalthia longifolia L. and Tagetes erecta L. were evaluated against the pathogenic fungi at 5, 10 and 20% concentrations. In vitro treatment showed that A. indica completely inhibited growth of the fungi at all the concentrations used. Similarly efficacy of four fungicides namely Bavistin DF, Green gel, Ridomil MZ Gold and Tall 25 EC were evaluated against the isolated fungi at 100 ppm, 200 ppm and 400 ppm concentrations. Tall 25 EC inhibited growth of the test fungi at all the concentrations used.
A total of six species of fungi were isolated from Citrus lemon. The isolated fungi were Aspergil... more A total of six species of fungi were isolated from Citrus lemon. The isolated fungi were Aspergillus niger, Candida krusei, Fusarium sp., Rhizopus stolonifer, Penicillium digitatum and Trichoderma sp. during the period of April 2013 to December 2013. Ethanol leaf extracts of five plants viz. Azadirachta indica L., Citrus limon L., Mangifera indica L., Polyalthia longifolia L. and Tagetes erecta L. were evaluated against the pathogenic fungi at 5, 10 and 20% concentrations. In vitro treatment showed that A. indica completely inhibited growth of the fungi at all the concentrations used. Similarly efficacy of four fungicides namely Bavistin DF, Green gel, Ridomil MZ Gold and Tall 25 EC were evaluated against the isolated fungi at 100 ppm, 200 ppm and 400 ppm concentrations. Tall 25 EC inhibited growth of the test fungi at all the concentrations used.
Dhaka University Journal of Biological Sciences, Jan 25, 2018
In the present investigation Brassica germplasm were screened in vitro against Sclerotinia sclero... more In the present investigation Brassica germplasm were screened in vitro against Sclerotinia sclerotiorum, the causal organism of stem rot disease of mustard (Brassica spp.) using cotyledon assay. The germplasm belong to Brassica rapa, B. juncea, B napus and Brassica sp. Among the 81 germplasm and seven cultivated varieties seven genotypes, namely BD 10113, BD 6948, BD 6954, BD 7108, BD7121, BD 7788 and BD7799 exhibited resistant reaction and eight germplasm viz. JBC 05117, BD 10456, BD6974, BD7116, BD7802, BD7804, BD7806, and BD7807 expressed moderately resistant reaction against S. sclerotiorum. The rest 66 germplasm and showed susceptibility at varied degree. Moderately susceptible reaction was observed in 29, susceptible in 26 and highly susceptible reaction was found in 11 germplasm. Out of seven cultivated varieties three were found highly susceptible, two were susceptible and two showed moderately susceptible.
A total of nine fungi were isolated from two ornamental angiosperms, namely Hemerocallis fulva L.... more A total of nine fungi were isolated from two ornamental angiosperms, namely Hemerocallis fulva L. and Pancratium verecundum Ant. belong to Liliaceae. Three species of fungi were found to be associated with the leaf of Hemerocallis fulva. The fungi were Colletotrichum capsici, (Syd.) Bull. & Bisby, Colletotrichum dematium (Pers. Ex Fr.) and Glomerella montana (Sacc.)v Arx & E. Muller. Six species of fungi, namely Alternaria alternata (Fries) Keissler, Colletotrichum orbiculare (Berk & Mont.) Arex., Curvularia clavata Jain, Fusarium solani (Mort.) Sacc., Lasiodiplodia theobromae (Pat.) Griffon and Maubol and Macrophomina phaseolina (Tassi) Goid were found to be associated with P. verecundum. Among the fungal species Glomerella montana is new record for Bangladesh. Dhaka Univ. J. Biol. Sci. 22(1): 39-46, 2013 (January)
Ten pathogenic fungi of Deuteromycetes were isolated from seven angiospermic hosts such as pointe... more Ten pathogenic fungi of Deuteromycetes were isolated from seven angiospermic hosts such as pointed gourd, tomato, rice, wheat, maize, chickpea and jute. Morphological characterization and molecular analyses were performed for accurate identification of the isolated pathogenic fungi. The sequence results obtained using the ITS1 and ITS4 primers were compared with NCBI GenBank and BOL database using BLAST analysis. Fusarium chlamydosporum and Penicillium pinophilum are recorded first time from Bangladesh.
Severe anthracnose symptom was recorded on the leaves of five angiosperms during September to Nov... more Severe anthracnose symptom was recorded on the leaves of five angiosperms during September to November, 2010. In total nine species of fungi belonging to four genera of the class deuteromycetes and a sterile fungus were found to be associated with the infected leaves of Abelmoschus esculentus (L.) Moench, Cucurbita maxima Duchesne, Datura metel L., Gossypium hirsutum L. and Vigna sinensis L. The associated fungi were Aspergillus flvaus Link, A. fumigatus Fresenius, A. nidulans (Eidam) G. Winter, A. niger van Tiegh, Cercospora sp., Colletotrichum capsici (Syd.) Butler & Bisby, Colletotrichum dematium (Pers.) Grove, Colletotricum gloeosporioides (Penz.) Penz. and Sacc., Curvularia clavata Jain, and a sterile fungus.
Fungal diseases of cotton plant (Gossypium hirsutum L.) were studied during July, 2011 to June, 2... more Fungal diseases of cotton plant (Gossypium hirsutum L.) were studied during July, 2011 to June, 2012. Eleven cotton varieties were selected for the experiment. Alternaria alternata (Fr.) Keissler, Aspergillus niger van Tiegh, Colletotrichum gossypii Sowthworth, Colletotrichum dematium (Pers.) Grove, Curvularia clavata Jain, Fusarium sp., Gleotrichum sp., Hyalopycnis sp., Pestalotiopsis guepinii (Desm.) Stay, and a sterile fungus were isolated from infected leaves of cotton varieties CB6 and CB11. Colletotrichum gossypii was isolated from both the varieties and C. dematium was exclusively isolated from CB6. Varieties CB6 and CB11 were more susceptible than other varieties. Cotton varieties CB1, CB2, and CB3 showed negligible infection on leaves and bolls. Colletotrichum gossypii and Hyalopycnis sp. are new record for Bangladesh. Moreover, association of C. dematium, Gleotrichum sp., P. guepinii and Hyalopycnis sp. with cotton is being reported first time. The three fungi Colletotrichum. gossypii, C. dematium and Hyalopycnis sp. are described and illustrated in this account as new Deuteromycetous records for Bangladesh.
not available DOI: http://dx.doi.org/10.3329/bjar.v39i3.21996 Bangladesh J. Agril. Res. 39(3): 54... more not available DOI: http://dx.doi.org/10.3329/bjar.v39i3.21996 Bangladesh J. Agril. Res. 39(3): 547-551, September 2014
Journal of the Asiatic Society of Bangladesh, Science, 2013
A survey on the incidence and severity of common scab (Streptomyces sp.) of potato was made in th... more A survey on the incidence and severity of common scab (Streptomyces sp.) of potato was made in the major potato growing districts of Bangladesh during the cropping season of 2007-2008. A total of 150 fields was surveyed for collection of potato common scab infected samples. It was observed that there was a lot of variation in disease severity and its incidence in different districts of Bangladesh. Highest per cent scab incidence (71.41 %) was recorded in Kahalo Upazila (Bogra) and lowest (13.79 %) in Pirgacha Upazila (Rangpur). Disease incidence also varied among the tested varieties namely, Cardinal, Diamant, Granola, Binella and Raja. Highest incidence was observed in Cardinal (54.08 %) followed by Binella (50.71 %) and it was lowest in Raja (3.07 %). Cardinal and Binella were found to be highly susceptible and Raja was resistant to common scab disease. Diamant, the commercial variety showed medium susceptible reaction to the disease. J. Asiat. Soc. Bangladesh, Sci. 39(1): 35-41, ...
Bangladesh J. Agril. Res. 37(3): 537-541, September 2012 DOI: http://dx.doi.org/10.3329/bjar.v37i... more Bangladesh J. Agril. Res. 37(3): 537-541, September 2012 DOI: http://dx.doi.org/10.3329/bjar.v37i3.12130
Journal of the Asiatic Society of Bangladesh, Science, 2013
A survey on the incidence and severity of common scab (Streptomyces sp.) of potato was made in th... more A survey on the incidence and severity of common scab (Streptomyces sp.) of potato was made in the major potato growing districts of Bangladesh during the cropping season of 2007-2008. A total of 150 fields was surveyed for collection of potato common scab infected samples. It was observed that there was a lot of variation in disease severity and its incidence in different districts of Bangladesh. Highest per cent scab incidence (71.41 %) was recorded in Kahalo Upazila (Bogra) and lowest (13.79 %) in Pirgacha Upazila (Rangpur). Disease incidence also varied among the tested varieties namely, Cardinal, Diamant, Granola, Binella and Raja. Highest incidence was observed in Cardinal (54.08 %) followed by Binella (50.71 %) and it was lowest in Raja (3.07 %). Cardinal and Binella were found to be highly susceptible and Raja was resistant to common scab disease. Diamant, the commercial variety showed medium susceptible reaction to the disease. J. Asiat. Soc. Bangladesh, Sci. 39(1): 35-41, ...
The biological control of plant diseases has recently been gaining appreciable importance to plan... more The biological control of plant diseases has recently been gaining appreciable importance to plant pathologists. Intensive research has been done in this field to avoid the hazardous impact of pesticides and agro-chemicals on ecosystem. The biological agents, the mycoparasites have also attained a significant position. It has been suggested that efforts should be made to investigate the biological control of plant diseases through parasitism and predation. Tuberculina spp. are well-known mycoparasite and lot of research has been done on mycoparasitism of this fungus. Tuberculina persicina is contact parasite forming neither haustoria nor other intercelluler structures. However, at contact areas between T. persicina and its hosts, distinct interfungal interactions are observed. The host cells are dissolved at the point of contact. Present study was made to evaluate the antagonistic efficiency and mycoparasitic activity of Tuberculina persicina (Ditm. ex Fr.) Sacc. against rust fungi ...
A total of six species of fungi were isolated from Citrus lemon. The isolated fungi were Aspergil... more A total of six species of fungi were isolated from Citrus lemon. The isolated fungi were Aspergillus niger, Candida krusei, Fusarium sp., Rhizopus stolonifer, Penicillium digitatum and Trichoderma sp. during the period of April 2013 to December 2013. Ethanol leaf extracts of five plants viz. Azadirachta indica L., Citrus limon L., Mangifera indica L., Polyalthia longifolia L. and Tagetes erecta L. were evaluated against the pathogenic fungi at 5, 10 and 20% concentrations. In vitro treatment showed that A. indica completely inhibited growth of the fungi at all the concentrations used. Similarly efficacy of four fungicides namely Bavistin DF, Green gel, Ridomil MZ Gold and Tall 25 EC were evaluated against the isolated fungi at 100 ppm, 200 ppm and 400 ppm concentrations. Tall 25 EC inhibited growth of the test fungi at all the concentrations used.
A total of six species of fungi were isolated from Citrus lemon. The isolated fungi were Aspergil... more A total of six species of fungi were isolated from Citrus lemon. The isolated fungi were Aspergillus niger, Candida krusei, Fusarium sp., Rhizopus stolonifer, Penicillium digitatum and Trichoderma sp. during the period of April 2013 to December 2013. Ethanol leaf extracts of five plants viz. Azadirachta indica L., Citrus limon L., Mangifera indica L., Polyalthia longifolia L. and Tagetes erecta L. were evaluated against the pathogenic fungi at 5, 10 and 20% concentrations. In vitro treatment showed that A. indica completely inhibited growth of the fungi at all the concentrations used. Similarly efficacy of four fungicides namely Bavistin DF, Green gel, Ridomil MZ Gold and Tall 25 EC were evaluated against the isolated fungi at 100 ppm, 200 ppm and 400 ppm concentrations. Tall 25 EC inhibited growth of the test fungi at all the concentrations used.
Dhaka University Journal of Biological Sciences, Jan 25, 2018
In the present investigation Brassica germplasm were screened in vitro against Sclerotinia sclero... more In the present investigation Brassica germplasm were screened in vitro against Sclerotinia sclerotiorum, the causal organism of stem rot disease of mustard (Brassica spp.) using cotyledon assay. The germplasm belong to Brassica rapa, B. juncea, B napus and Brassica sp. Among the 81 germplasm and seven cultivated varieties seven genotypes, namely BD 10113, BD 6948, BD 6954, BD 7108, BD7121, BD 7788 and BD7799 exhibited resistant reaction and eight germplasm viz. JBC 05117, BD 10456, BD6974, BD7116, BD7802, BD7804, BD7806, and BD7807 expressed moderately resistant reaction against S. sclerotiorum. The rest 66 germplasm and showed susceptibility at varied degree. Moderately susceptible reaction was observed in 29, susceptible in 26 and highly susceptible reaction was found in 11 germplasm. Out of seven cultivated varieties three were found highly susceptible, two were susceptible and two showed moderately susceptible.
A total of nine fungi were isolated from two ornamental angiosperms, namely Hemerocallis fulva L.... more A total of nine fungi were isolated from two ornamental angiosperms, namely Hemerocallis fulva L. and Pancratium verecundum Ant. belong to Liliaceae. Three species of fungi were found to be associated with the leaf of Hemerocallis fulva. The fungi were Colletotrichum capsici, (Syd.) Bull. & Bisby, Colletotrichum dematium (Pers. Ex Fr.) and Glomerella montana (Sacc.)v Arx & E. Muller. Six species of fungi, namely Alternaria alternata (Fries) Keissler, Colletotrichum orbiculare (Berk & Mont.) Arex., Curvularia clavata Jain, Fusarium solani (Mort.) Sacc., Lasiodiplodia theobromae (Pat.) Griffon and Maubol and Macrophomina phaseolina (Tassi) Goid were found to be associated with P. verecundum. Among the fungal species Glomerella montana is new record for Bangladesh. Dhaka Univ. J. Biol. Sci. 22(1): 39-46, 2013 (January)
Ten pathogenic fungi of Deuteromycetes were isolated from seven angiospermic hosts such as pointe... more Ten pathogenic fungi of Deuteromycetes were isolated from seven angiospermic hosts such as pointed gourd, tomato, rice, wheat, maize, chickpea and jute. Morphological characterization and molecular analyses were performed for accurate identification of the isolated pathogenic fungi. The sequence results obtained using the ITS1 and ITS4 primers were compared with NCBI GenBank and BOL database using BLAST analysis. Fusarium chlamydosporum and Penicillium pinophilum are recorded first time from Bangladesh.
Severe anthracnose symptom was recorded on the leaves of five angiosperms during September to Nov... more Severe anthracnose symptom was recorded on the leaves of five angiosperms during September to November, 2010. In total nine species of fungi belonging to four genera of the class deuteromycetes and a sterile fungus were found to be associated with the infected leaves of Abelmoschus esculentus (L.) Moench, Cucurbita maxima Duchesne, Datura metel L., Gossypium hirsutum L. and Vigna sinensis L. The associated fungi were Aspergillus flvaus Link, A. fumigatus Fresenius, A. nidulans (Eidam) G. Winter, A. niger van Tiegh, Cercospora sp., Colletotrichum capsici (Syd.) Butler & Bisby, Colletotrichum dematium (Pers.) Grove, Colletotricum gloeosporioides (Penz.) Penz. and Sacc., Curvularia clavata Jain, and a sterile fungus.
Fungal diseases of cotton plant (Gossypium hirsutum L.) were studied during July, 2011 to June, 2... more Fungal diseases of cotton plant (Gossypium hirsutum L.) were studied during July, 2011 to June, 2012. Eleven cotton varieties were selected for the experiment. Alternaria alternata (Fr.) Keissler, Aspergillus niger van Tiegh, Colletotrichum gossypii Sowthworth, Colletotrichum dematium (Pers.) Grove, Curvularia clavata Jain, Fusarium sp., Gleotrichum sp., Hyalopycnis sp., Pestalotiopsis guepinii (Desm.) Stay, and a sterile fungus were isolated from infected leaves of cotton varieties CB6 and CB11. Colletotrichum gossypii was isolated from both the varieties and C. dematium was exclusively isolated from CB6. Varieties CB6 and CB11 were more susceptible than other varieties. Cotton varieties CB1, CB2, and CB3 showed negligible infection on leaves and bolls. Colletotrichum gossypii and Hyalopycnis sp. are new record for Bangladesh. Moreover, association of C. dematium, Gleotrichum sp., P. guepinii and Hyalopycnis sp. with cotton is being reported first time. The three fungi Colletotrichum. gossypii, C. dematium and Hyalopycnis sp. are described and illustrated in this account as new Deuteromycetous records for Bangladesh.
not available DOI: http://dx.doi.org/10.3329/bjar.v39i3.21996 Bangladesh J. Agril. Res. 39(3): 54... more not available DOI: http://dx.doi.org/10.3329/bjar.v39i3.21996 Bangladesh J. Agril. Res. 39(3): 547-551, September 2014
Journal of the Asiatic Society of Bangladesh, Science, 2013
A survey on the incidence and severity of common scab (Streptomyces sp.) of potato was made in th... more A survey on the incidence and severity of common scab (Streptomyces sp.) of potato was made in the major potato growing districts of Bangladesh during the cropping season of 2007-2008. A total of 150 fields was surveyed for collection of potato common scab infected samples. It was observed that there was a lot of variation in disease severity and its incidence in different districts of Bangladesh. Highest per cent scab incidence (71.41 %) was recorded in Kahalo Upazila (Bogra) and lowest (13.79 %) in Pirgacha Upazila (Rangpur). Disease incidence also varied among the tested varieties namely, Cardinal, Diamant, Granola, Binella and Raja. Highest incidence was observed in Cardinal (54.08 %) followed by Binella (50.71 %) and it was lowest in Raja (3.07 %). Cardinal and Binella were found to be highly susceptible and Raja was resistant to common scab disease. Diamant, the commercial variety showed medium susceptible reaction to the disease. J. Asiat. Soc. Bangladesh, Sci. 39(1): 35-41, ...
Bangladesh J. Agril. Res. 37(3): 537-541, September 2012 DOI: http://dx.doi.org/10.3329/bjar.v37i... more Bangladesh J. Agril. Res. 37(3): 537-541, September 2012 DOI: http://dx.doi.org/10.3329/bjar.v37i3.12130
Uploads
Papers by Najmun naher