Response of contrasting bread wheat genotypes for heat and drought stress tolerance for rhizospheric soil properties

Aim: The study aimed at investigating differential response of contrasting bread wheat genotypes for heat and drought stress towards changes in chemical and microbial components of rhizospheric soil for developing climate resilient wheat varieties. Methodology: Rhizospheric soils were studied for ch...

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Published in:Journal of environmental biology 2021-09, Vol.42 (5), p.1298-1306
Main Authors: Ahlawat, O.P., Chugh, T., Venkatesh, K., Tiwari, R., Sharma, P., Sheoran, S., Singh, R., Mamrutha, H.M., Arora, N.K., Singh, G., Singh, G.P.
Format: Article
Language:English
Subjects:
Abiotic stress
Abundance
Analytical chemistry
Anions
Bacteria
Bread
Calcium ions
Carbon
Cations
Chemical properties
Drought
Drought resistance
Electrical conductivity
Electrical resistivity
Environmental science
Fixing
Genotype & phenotype
Genotypes
Glucose
Heat tolerance
Laboratories
Magnesium
Manganese
Microorganisms
Nitrogen
Nitrogen fixation
Nutrients
Organic carbon
Organic matter
Plant growth
Potassium
Soil properties
Soil stresses
Soils
Wheat
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container_end_page 1306
container_issue 5
container_start_page 1298
container_title Journal of environmental biology
container_volume 42
creator Ahlawat, O.P.
Chugh, T.
Venkatesh, K.
Tiwari, R.
Sharma, P.
Sheoran, S.
Singh, R.
Mamrutha, H.M.
Arora, N.K.
Singh, G.
Singh, G.P.
description Aim: The study aimed at investigating differential response of contrasting bread wheat genotypes for heat and drought stress towards changes in chemical and microbial components of rhizospheric soil for developing climate resilient wheat varieties. Methodology: Rhizospheric soils were studied for changes in pH, electrical conductivity, cations, anions, micro-elements, major-elements, organic carbon and organic matter, and plant growth promoting rhizobacteria(PGPRs) abundance at booting and anthesis stages of growth in four contrasting genotypes during 2017-18 and 2018-19 crop seasons Results: The contrasting genotypes (HD2967 and WH730) for heat tolerance exhibited significant interaction between genotype and stage of growth for Na+, K+ and nitrogen, while genotypes (HUW468 and C306) for drought tolerance exhibited it for available nitrogen only. Significant difference for Ca2+, Mg2+, iron, manganese, nitrogen and potassium levels were recorded in drought stress related genotypes at two stages of growth. The heat tolerant genotype showed 2.54 and 10.67 folds enhancement in population of N2 fixing and spore forming bacteria at anthesis compared to sensitive genotypes, while drought tolerant genotype showed 1.51, 1.07 and 6.26 folds in P-solubilizing, N2 fixing and general bacterial abundance. Interpretation: Contrasting genotypes for heat and drought stresses responded differently for chemical properties and abundance of PGPRs in rhizospheric soils.
doi_str_mv 10.22438/jeb/42/5/MRN-1777
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Methodology: Rhizospheric soils were studied for changes in pH, electrical conductivity, cations, anions, micro-elements, major-elements, organic carbon and organic matter, and plant growth promoting rhizobacteria(PGPRs) abundance at booting and anthesis stages of growth in four contrasting genotypes during 2017-18 and 2018-19 crop seasons Results: The contrasting genotypes (HD2967 and WH730) for heat tolerance exhibited significant interaction between genotype and stage of growth for Na+, K+ and nitrogen, while genotypes (HUW468 and C306) for drought tolerance exhibited it for available nitrogen only. Significant difference for Ca2+, Mg2+, iron, manganese, nitrogen and potassium levels were recorded in drought stress related genotypes at two stages of growth. The heat tolerant genotype showed 2.54 and 10.67 folds enhancement in population of N2 fixing and spore forming bacteria at anthesis compared to sensitive genotypes, while drought tolerant genotype showed 1.51, 1.07 and 6.26 folds in P-solubilizing, N2 fixing and general bacterial abundance. 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subjects Abiotic stress
Abundance
Analytical chemistry
Anions
Bacteria
Bread
Calcium ions
Carbon
Cations
Chemical properties
Drought
Drought resistance
Electrical conductivity
Electrical resistivity
Environmental science
Fixing
Genotype & phenotype
Genotypes
Glucose
Heat tolerance
Laboratories
Magnesium
Manganese
Microorganisms
Nitrogen
Nitrogen fixation
Nutrients
Organic carbon
Organic matter
Plant growth
Potassium
Soil properties
Soil stresses
Soils
Wheat
title Response of contrasting bread wheat genotypes for heat and drought stress tolerance for rhizospheric soil properties
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