STUDIES ON THE INFLUENCE OF ARBUSCULAR MYCORRHIZAL FUNGI AND PLANT GROWTH PROMOTING RHIZOBACTERIA ON NUTRIENT UPTAKE AND BIOMASS PRODUCTION IN CHERRY (PRUNUS AVIUM L.)
KrishiKosh
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Title |
STUDIES ON THE INFLUENCE OF ARBUSCULAR MYCORRHIZAL FUNGI AND PLANT GROWTH PROMOTING RHIZOBACTERIA ON NUTRIENT UPTAKE AND BIOMASS PRODUCTION IN CHERRY (PRUNUS AVIUM L.)
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Creator |
SHARMA, RUCHI
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Contributor |
KAUSHAL, RAJESH
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Subject |
planting, bacteria, fungi, vegetative propagation, biological development, productivity, fertilizers, nutrients, biological phenomena, inorganic acid salts
microorganisms (PGPR’s/AM fungal inoculum’s) |
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Description |
ABSTRACT Our whole system of agriculture depends on microbial activities and there appears to be tremendous potential for making use of these microorganisms (PGPR’s/AM fungal inoculum’s) in increasing crop production. The sustainable exploitation of these PGPR/AM fungi, which acts as bio-stimulants, bioregulators, biofertilizers and bioprotectants to produce healthy plants and high quality fruits with minimal usages of chemical inputs. Therefore, the present investigation was carried out to select and characterize the efficient indigenous AM fungi and PGPR isolates for multifarious PGP traits and to study their conjoint effect along with chemical fertilizers on nutrient uptake and biomass production of cherry plant under net house conditions. A total of ten efficient bacterial isolates were screened for multifarious PGP traits like P-solubilization, siderophore, IAA, HCN production, nitrogen fixation and antagonistic activity against Rhizoctonia solani, Fusarium oxysporum, Pythium aphanidermatum and Sclerotinia sclerotiorum. On the basis of screening test two bacterial isolates P1 and P7 were selected, which can solubilized 299.54 and 255.95 μg/ml of insoluble phosphorous, produce 30.77 and 31.59 % SU of siderophore, 70.84 and 68.23 μg/ml of IAA, respectively after incubation for 72 hours at ± 30°C. The isolate P1 showed antagonism against all the selected fungi i.e. Rhizoctonia solani (48.92%), Fusarium oxysporum (53.55%), Pythium aphanidermatum (33.05%) and Sclerotinia sclerotiorum (68.99%). On the basis of morphological, biochemical and 16s rRNA characterization, P1 isolate was identified as Bacillus subtilis and P7 was identified as Bacillus amyloliquefaciens. The AMF spore population varied from 120.0 to 275.0 spores/50 g of soil and the per cent root colonization ranged from 37.96 to 52.00 % under natural conditions. Isolated ten species of AM fungi belong to four genera viz., Glomus, Acaulospora, Gigaspora, Scutellospora with maximum frequency (> 75%) of occurrence for Glomus genus. Multiplication of AM fungal spores were carried out in sterilized Sand: Soil: FYM (1:1:1) mixture with Panicum maximum. The root colonization of guinea grass was varied from 21.11 to 28.89 per cent with spore count of 205.6 to 300.0 spores/50 g of soil after six months of multiplication. The conjoint application of these selected indigenous PGPR isolate (Bacillus amyloliquefaciens) and AMF-II isolate (Glomus fasciculatum) at 75 per cent dose of N and P chemical fertilizers brought a significant increase in plant growth parameters i.e root length (39.10 cm), shoot length (83.40 cm), number of leaves (45.25), leaf area (128.88) and R:S ratio (1.23), N, P and K uptake i.e. 179.54, 14.83 and 114.44 mg/plant, respectively and biomass (62.45 g/plant) production of sweet cherry under nursery conditions over uninoculated control. |
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Date |
2016-06-23T14:04:45Z
2016-06-23T14:04:45Z 2016 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/67853
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Language |
en
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Format |
application/pdf
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