tailieunhanh - Screening and interactive effects of soil microbial enzymes activities of diazotrophic PGPR

Diverse communities of beneficial plant growth promoting diazotrophs harbour in Rice rhizosphere which mostly plays a significant role in supplementing Biofertilizer, bioprotectant and bio stimulator and improves the crop productivity directly or indirectly. 53 rhizobacterial were isolated from lowland rice rhizosphere of Jorhat district of Assam in non-selective TSA media. 30 pure culture isolates were grown in selective media to and selected five phosphate solubilizers, three Azospirillum, one Azotobacter and one Pseudomonas for screening multiple PGP traits both qualitative and quantitatively. All the selected cultures produced ammonia but Proteolytic activity was limited to few cultures. The test cultures enhanced seed germination ranging from 60-100%, IAA production from to mg l-1 and P-solubilization from percent. The results also indicated direct relationship of drop in pH ( to ) to extent of P-solubilized with days of incubation. A Pot culture experiment was conducted during November, 2016 to evaluate 7 screened cultures of PGP on growth characters of brinjal (Solanum melongena) and post-harvest parameters. Among the test PGPR, culture P 20 (Azospirillium) recorded significantly highest percent increase in root length (), plant height (), root dry weight (), shoot dry weight (), total biomass (), root shoot ratio (), number of leaves () and number of branches (200%) over uninoculated control. On post-harvest parameters, the microbial population was evaluated ranged from to cfu 106ml-1 , dehydrogenase activity ranged from to µg TPF g-1 , hydrolysis of Fluorescein diacetate ranged from to µg FDA g-1 hr -1 and phosphomonoesterase activity ranged from to µg p-nitrophenol g -1 h -1 . Azospirillium (P 20) and Phosphate Solubilizing Bacteria (P 49) suggest to be the most efficient biofertilizers, biopesticide and biostimulator properties. | Screening and interactive effects of soil microbial enzymes activities of diazotrophic PGPR

• Sinh học
• Brinjal (Solanum melongena)
• Soil microbial enzymes activities
• Interactive effects
• Screening and interactive effects
• Diazotrophic PGPR
• Genetic divergence
• Genetic divergence in brinjal
• Solanum melongena L
• Solanum melongena
• D2 statistics
• Clustering pattern
• Principal component analysis
• Brinjal (Solanum melongena L )
• Foot hills of Himalaya
• D2 clustering
• Genetic diversity
• Intra and inter cluster distance
• Genetic variability
• Genetic advance
• Percent of mean and PCV
• Yield attributing traits in Brinjal
• Brinjal genotypes representing
• Genetic variability in Brinjal
• Brinjal (Solanum melongena L
• Konkanagro climatic conditions
• Fruit and yield characters under
• Heterosis for morpho biochemical traits
• Morpho biochemical traits
• Morpho biochemical traits in brinjal
• Superior hybrids
• Correlation coefficients
• Correlation coefficients on quality
• Quality of Brinjal
• Comparative evaluation of heritability
• Phomopsis blight
• Phomopsis blight in Brinjal
• Screening against phomopsis blight
• Genetically diverse
• Cluster mean
• Breeding potential of Brinjal
• Genotypes using D2 analysis
• Hill Zones of Karnataka
• Time of pollination
• Period of pollen storage
• Seed yield
• Quality of Brinjal Hybrid
• Brinjal Hybrid (Solanum melongena L )
• Phomopsis vexans
• Efficacy of various fungicides against phomopsis vexans
• Various fungicides against phomopsis vexans
• Fruit rot of brinjal
• Quantitative traits
• Additive X dominance
• Quantitative traits in Brinjal
• Genetics of quantitative traits
• Growth and Brinjal
• Performance of NPK
• Vermicompost and boron
• Growth and quality attributes
• Iron on growth
• Phenological characters of Brinjal
• Phenological characters
• Eight treatments micronutrients
• Mahalanobis D2
• Cluster analysis
• Brinjal (Solanum melongena L ) genotypes
• Assessment of genetic divergence
• Evaluation of Brinjal
• Genotypes for flowering
• Yield parameters
• Yield per plant
• Genotypes for growth
• Higher pericarp thickness
• Quality and yield
• Yield attributing traits
• Diverse genotypes of Brinjal
• Component characters
• Genotypic coefficient of variation
• Phenotypic coefficient of variation
• Fruit borer infestation
• Soil fertility
• Organic mulch
• Nutritional quality
• Mulching in brinjal
• Path analysis
• Direct effect
• Indirect effect
• Brinjal [Solanum melongena L ]
• Character association
• Quality parameters
• Path coefficient analysis in Brinjal
• Augmented design
• Residual effect
• Attributing characters
• Correlation studies
• Path analysis for yield
• Hybrid vigour
• Mid parent heterosis
• Betterparent heterosis
• Standard parent heterosis
• Principle component
• Different genotype
• Morphological characterization