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Allometric equations for estimating leaf area index(LAI) of two important tropical species(Tectona grandis and Dendrocalamus strictus)

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Journal of Forestry Research 2010年第2期21卷 197-200,I0006页

作者： dhaval vyas Nirav mehta J.Dina-karan N.S.R.Krishnayya Ecology Laboratory Deprtment of BotanyFaculty of ScienceM.S.University of Baroda

Leaf area index（LAI） of Teak（Tectona grandis） and Bamboo（Dendrocalamus strictus） grown in Shoolpaneshwar Wildlife Sanctuary of Narmada District,Gujarat,India was obtained by destructive sampling,photo-grid method and by litter trap *** allometric equation（between leaf area by litter trap method and canopy spread area） was developed for the determination of *** show that LAI value calculated by the developed allometric equation was similar to that estimated by destructive sampling and photo-grid method,with Root Mean Square Error（RMSE） of 0.90 and 1.15 for Teak,and 0.38 and 0.46 for Bamboo,*** was a perfect match in both the LAI values（estimated and calculated）,indicating the accuracy of the developed equations for both the *** conclusion,canopy spread is a better and sensitive parameter to estimate leaf area of *** developed equations can be used for estimating LAI of Teak and Bamboo in tropics.

关键词： bamboo canopy spread area leaf area index specific leaf area teak tropical forest

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Dynamism of Antimicrobial Activity of Actinomycetes—A Case Study from Undisturbed Microbial Niche

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Advances in Microbiology 2014年第6期4卷 324-334页

作者： Jayshree D. Patel Mahesh Parmar Purshottam Patel Pravin Rohit Ramesh Taviyad Parveen Ansari Bipasha Bhattacharya dhaval vyas Vipin Kumar Nirmal S. Sahay Pawan K. Singh National Innovation Foundation India Satellite Complex Nr. Mansi Circle Ahmedabad Gujarat India Sadbhav SRISTI Sanshodhan Laboratory AES Boys Hostel Campus Nr. Gujarat University Library & SBI Bank Navrangpura Ahmedabad Gujarat India

Escalation of drug resistant microbes (bacteria) had forced researchers to search new and improved therapeutic compounds from different possible sources, including metabolites secreted by the actinomycetes. The aim of this study was to evaluate the pattern of antimicrobial actinomycetes from physiologically distinct soil of different geographical locations. Forty five soil samples were collected from 5 districts of Gujarat including two sanctuaries as source of survey for bioactive actinomycetes. Crowded plate technique was used for isolation and Agar cylinder method was employed for the antimicrobial screening. A total of 171 actinomycetes were isolated and screened against eighteen pathogens responsible for causing diseases in plants and humans. Results indicate that 79% of the isolates were active against at least one of the eighteen tested pathogens. Some of the actinomycetes strain had shown strong antibacterial and antifungal activity which may be a good source of obtaining novel antimicrobials.

关键词： Actinomycetes Screening Antimicrobial Drug Resistance Soil Microflora

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