Diversity and Distribution Pattern of Rice Stem Periphyton in Water-Logged Rice Fields under Different Cropping Seasons in Barak Valley, Assam

2018 ◽  
Vol 6 (1) ◽  
pp. 3330-3340
Author(s):  
Malabika Bhattacharjee
Keyword(s):  
Distribution Pattern ◽  
Rice Fields ◽  
Barak Valley ◽  
Cropping Seasons

scholarly journals DIVERSITY AND DISTRIBUTION PATTERN OF THE GENUS OSCILLATORIA VAUCHER EX GOM. (OSCILLATORIALES, CYANOPROKARYOTE) IN TRIPURA, INDIA

2021 ◽  
Vol 21 (2) ◽  
Author(s):  
Rama Kant ◽  
Kuntal Sarma ◽  
Jyoti Singh ◽  
Nida Ziyaul ◽  
Doli, Amrish Saini ◽  
...  
Keyword(s):  
Distribution Pattern ◽  
Green Alga ◽  
Rice Fields ◽  
Blue Green Alga

Present paper deals with the diversity and distribution pattern of the genus Oscillatoria in Tripura, India. The genus Oscillatoria is a filamentous, unbranched, Non heterocystous and motile Blue-green Alga. In the present investigation we report sixteen species of the genus Oscillatoria from Tripura, India, out which, all the species are new addition to the flora of Tripura and seven species are new addition to Indian flora. Our study also revealed that out of total sixteen species of Oscillatoria, thirteen grow in rice fields and as well as in other habitats, but rest three taxa flourish only on specific habitats of Tripura, India.

scholarly journals Investigation on the Nitrogen Fixing Cyanobacteria (BGA) in Rice Fields of North-West Region of Bangladesh. III: Filamentous (Heterocystous)

2015 ◽  
Vol 6 (1) ◽  
pp. 253-259
Author(s):  
MA Hasan
Keyword(s):  
Distribution Pattern ◽  
Agricultural Land ◽  
Rice Fields ◽  
Atmospheric Nitrogen ◽  
Nitrogen Fixing ◽  
North West ◽  
Blue Green Algae ◽  
Green Algal ◽  
West Region ◽  
Growth Promoting

The experiment was conducted to carry out the nitrogen fixing cyanobacterial (BGA) resources and their distribution pattern in rice fields of North-West region of Bangladesh during the period of 2011. Considering the vast importance of Blue-green algae (BGA) in agricultural land especially in rice fields, their twelve months long systematic was undertaken. A total of 10 genera with 37 species of filamentous-heterocystous blue-green algal forms were identified and recorded from this region. Out of 37 species, 9 species belonging to the genus Anabaena, 8 to Nostoc, 5 to Cylindrospermum, 4 to Calothrix, 3 to Rivularia, 3 to Gloeotrichia and 2 to Aulosira; while 1 species belonging to each genus of Anabaenopsis, Microcheate and Aphanizomenon. The distribution pattern of filamentous-heterocystous BGA in rice fields over the study area has also been observed in this study. With few exceptions, the filamentous-heterocystous BGA are more or less uniformly distributed all over the study areas. All of the BGA members have a tremendous ability to contribute on enhancing agricultural production by fixing atmospheric nitrogen and adding organic matter, vitamins, growth promoting substances etc to the soil and crops.DOI: http://dx.doi.org/10.3329/jesnr.v6i1.22075 J. Environ. Sci. & Natusral Resources, 6(1): 253-259 2013

scholarly journals Investigation on the Nitrogen Fixing Cyanobacteria (BGA) in Rice Fields of North-West Region of Bangladesh. I: Nonfilamentous

2013 ◽  
Vol 5 (2) ◽  
pp. 185-192 ◽  
Author(s):  
MA Hasan
Keyword(s):  
Distribution Pattern ◽  
Agricultural Land ◽  
Rice Fields ◽  
Nitrogen Fixing ◽  
Systematic Observation ◽  
North West ◽  
Blue Green Algae ◽  
Green Algal ◽  
West Region ◽  
Growth Promoting

The experiment was conducted to carry out the nitrogen fixing cyanobaterial (BGA) resources and their distribution pattern in rice fields of North-West region of Bangladesh during the period of 2011. Considering the vast importance of Blue-green algae (BGA) in agricultural land especially in rice fields, twelve months long systematic observation was undertaken. A total of 15 genera with 42 species of non-filamentous (unicellular and colonial) blue-green algal forms were identified and recorded from this region. Out of 42 species, 9 species belonging to the genus Aphanocapsa, 8 to Chroococcus, 5 to Gloeocapsa, 4 to Aphanothece, 3 to Gloeothece, 3 to Merismopedia and 2 to Coelosphaerium; while 1 species belonging to each genus of Chroococcidiopsis, Synechococcus, Synechocystis, Dactylococcopsis, Microcystis, Myxosarcina, Hydrococcus and Xenococcus. The distribution pattern of non-filamentous BGA in rice fields over the study area has also been observed in this study. With few exceptions, the non-filamentous BGA are more or less uniformly distributed all over the study areas. All of the BGA members have a tremendous ability to contribute on enhancing agricultural production by fixing atmospheric nitrogen and adding organic matter, vitamins, growth promoting substances etc to the soil and crops.DOI: http://dx.doi.org/10.3329/jesnr.v5i2.14812 J. Environ. Sci. & Natural Resources, 5(2): 185-192 2012

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