Record Details

MITIGATING EFFECT OF NITRIC OXIDE AND BRASSINOSTEROID IN TOMATO (Lycopersicon esculentum Mill.) UNDER DROUGHT STRESS

KrishiKosh

View Archive Info
 
 
Field Value
 
Title MITIGATING EFFECT OF NITRIC OXIDE AND BRASSINOSTEROID IN TOMATO (Lycopersicon esculentum Mill.) UNDER DROUGHT STRESS
 
Creator Krishna Kumar Jangid
 
Contributor Prof. Padmanabh Dwivedi
 
Subject Tomato, mitigating effect, nitric oxide, brassinosteroid under drought stress
 
Description Ph. D. Thesis, Plant Physiology
The present investigation entitled ‘‘Mitigating Effect Of Nitric Oxide And Brassinosteroid in Tomato (Lycopersicon Esculentum Mill.) under Drought Stress’’ was carried out to study the mitigating effect of sodium nitroprusside (SNP) and 24-epibrassinolide under drought condition induced by withholding water in tomato, during the years 2013 to 2014 in the net house, Department of Plant Physiology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, India. This experiment was divided in two parts, first is the study of the effect of drought stress in tomato plant as compared to control or normal irrigated plant. Secondly, the study of the effect of Nitric Oxide (sodium nitroprusside, SNP) and brassinosteroid (24-epibrassinoloid, EBL) in drought induced plant in both susceptible and resistant genotypes of tomato. On the basis of present investigation, it is concluded that drought stress significantly reduced the plant height, number of shoot, length of shoot (cm), number of leaves, leaf area plant-1, number of branches and stem girth. Leaf turgor presser and cell membrane was affected during drought treatment by reduction in relative water content of leaf (RWCL) and membrane stability index (MSI) but application of SNP and EBL improved the same. Chlorophyll a, b, total chlorophyll, and lycopene content improved under drought stress with the application of SNP and EBL thereby having positive impact on production and quality parameters. Reduction in the MDA and H2O2 content, and PAL activity showed that the SNP and EBL mitigated the drought impact in tomato plants. Increased proline (compatible osmolyte) level and antioxidant enzymes such as catalase and SOD showed improved antioxidant defense capacity of plant with the exogenous application of SNP and EBL. All the yield and yield attributes improved with the treatments of SNP and EBL, in single and combined application, using foliar spray. Overall, treatment with SNP and EBL, alone or in combination, alleviated the negative impacts of drought stress up to a great extent by significantly improving overall morpho-physiological and biochemical parameters. Single use of EBL showed better performance than single SNP to combat drought stress; however, their combined treatment produced the best response.
 
Date 2017-01-19T17:19:40Z
2017-01-19T17:19:40Z
2017
 
Type Thesis
 
Identifier Jangid, K. K. 2017. Mitigating effect of nitric oxide and brassinosteroid in tomato (lycopersicon esculentum mill.) under drought stress. Ph. D. Thesis, Department of Plant Physiology, Institute of Agricultural Sciences, BHU, Varanasi.
http://krishikosh.egranth.ac.in/handle/1/97203
 
Language en
 
Relation P0153;
 
Format application/pdf
 
Publisher Institute of Agricultural Sciences, Banaras Hindu University, Varanasi