The present investigation was conducted to find out the effect of varying levels of fly ash and growth hormones on the determination of chlorophylls. The experiments were conducted in pots during 2009-2010 with Arachi...The present investigation was conducted to find out the effect of varying levels of fly ash and growth hormones on the determination of chlorophylls. The experiments were conducted in pots during 2009-2010 with Arachis hypogaea L. (groundnut) grown with different levels of fly ash concentration, and soil was used (various combinations) at Guru ghasidas University, Bilaspur (CG.) India. In fresh leaf, chlorophylls content varies in the plain soil from 0.29 to 0.64 mg g-1, which is less for photosynthetic activities. Arachis hypogaea L. showed maximum germination percentage, increasing leaf area, enhancement of root & shoot length, whereas Fly ash, bio fertilizers with growth hormone showed minimum values in all parameters. Results showed that, for combination of A to E, the value of chlorophyll ranged from 0.270 mg g-1 to 0.395 mg g-1, and chlorophyll b ranged from 0.400 mg g-1 to 0.489 mg g-1, whereas fro total chloro- phyll ranged from 0.67 to 0.85 mg g-1. In the present work, chlorophyll a, chlorophyll b & total chlorophyll content in fresh leaf, after 45 days, were recorded as 0.395 mg g-1, 0.489 mg g-1 and 0.851 mg g-1 while in 90 days were recorded as 10.38 mg g-1, 0.48 mg g-1 and 0.86 mg g-1 respectively, in less amount combination of fly ash, soil content with application of growth hormone.展开更多
Several mechanisms are developed by the microorganisms to tolerate few high concentrations of heavy metals. One of these mechanisms dependent upon anabolic and catabolic energy of microorganisms is the bioaccumulation...Several mechanisms are developed by the microorganisms to tolerate few high concentrations of heavy metals. One of these mechanisms dependent upon anabolic and catabolic energy of microorganisms is the bioaccumulation of heavy metals. In present work, approximately four varieties of bacteria have been isolated from the ash dyke sample of four thermal power plants of Chhattisgarh, i.e., Bharat Aluminium Company (BALCO), Chhattisgarh State Electricity Board (CSEB), Korba, Thermal Power Cooperation (NTPC), Bilaspur and KSK Akaltara, Chattisgarh. Out of one hundred fifty isolates, three were capable to grow in varying concentration of heavy metals. The strains were tested for their tolerance against six different types of heavy metals dominant in the ash samples viz. Pb, Hg, Ni, Co, Cu, Mn. Their maximum resistance existed up to 0.6mM/ml of the above mentioned different metals under lab standard conditions. Three isolates are found suitable for the multiple metal resistance ability viz SM2, SM3, and SM12. These are categorized as Bacillus cereus (SM2, SM3), and Bacillus subtilis (SM12) after performing 16S rDNA sequencing.展开更多
文摘The present investigation was conducted to find out the effect of varying levels of fly ash and growth hormones on the determination of chlorophylls. The experiments were conducted in pots during 2009-2010 with Arachis hypogaea L. (groundnut) grown with different levels of fly ash concentration, and soil was used (various combinations) at Guru ghasidas University, Bilaspur (CG.) India. In fresh leaf, chlorophylls content varies in the plain soil from 0.29 to 0.64 mg g-1, which is less for photosynthetic activities. Arachis hypogaea L. showed maximum germination percentage, increasing leaf area, enhancement of root & shoot length, whereas Fly ash, bio fertilizers with growth hormone showed minimum values in all parameters. Results showed that, for combination of A to E, the value of chlorophyll ranged from 0.270 mg g-1 to 0.395 mg g-1, and chlorophyll b ranged from 0.400 mg g-1 to 0.489 mg g-1, whereas fro total chloro- phyll ranged from 0.67 to 0.85 mg g-1. In the present work, chlorophyll a, chlorophyll b & total chlorophyll content in fresh leaf, after 45 days, were recorded as 0.395 mg g-1, 0.489 mg g-1 and 0.851 mg g-1 while in 90 days were recorded as 10.38 mg g-1, 0.48 mg g-1 and 0.86 mg g-1 respectively, in less amount combination of fly ash, soil content with application of growth hormone.
文摘Several mechanisms are developed by the microorganisms to tolerate few high concentrations of heavy metals. One of these mechanisms dependent upon anabolic and catabolic energy of microorganisms is the bioaccumulation of heavy metals. In present work, approximately four varieties of bacteria have been isolated from the ash dyke sample of four thermal power plants of Chhattisgarh, i.e., Bharat Aluminium Company (BALCO), Chhattisgarh State Electricity Board (CSEB), Korba, Thermal Power Cooperation (NTPC), Bilaspur and KSK Akaltara, Chattisgarh. Out of one hundred fifty isolates, three were capable to grow in varying concentration of heavy metals. The strains were tested for their tolerance against six different types of heavy metals dominant in the ash samples viz. Pb, Hg, Ni, Co, Cu, Mn. Their maximum resistance existed up to 0.6mM/ml of the above mentioned different metals under lab standard conditions. Three isolates are found suitable for the multiple metal resistance ability viz SM2, SM3, and SM12. These are categorized as Bacillus cereus (SM2, SM3), and Bacillus subtilis (SM12) after performing 16S rDNA sequencing.
