Morpho-physiological screening for salinity tolerant genotypes in wheat [Triticum aestivum (L.)]

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dc.contributor.advisorSandooja, J.K.
dc.contributor.authorSharma, Sonu Kumari
dc.date.accessioned2017-10-23T09:10:08Z
dc.date.available2017-10-23T09:10:08Z
dc.date.issued2017
dc.description.abstractThe present study was conducted with 14 wheat genotypes {P-9109, P-9110, P-9111, P-9112, P-9113, P-9114, P-9115, P-9116, P-9117, P-9118, P-9119, P-9120, Kh-65, KRL-210 (Check)}to evaluate physiological and biochemical for lab condition and physiological, biochemical and yield related attributes for salinity tolerance in field conditions. For lab condition Seedlings of uniform size were selected and planted on germination paper were supplied with half strength of Hoagland nutrient solution alongwith 5 dSm-1 and 7.5 dSm-1 saline water in the beaker and seedling were grown for 14 and 21 days. Root length and shoot length decreased with increasing level of salinity among all genotypes under lab condition (14 & 21 days after germination). Root biomass and shoot biomass also decreased with increasing level of salinity among all genotypes under lab condition (14 & 21 days after germination). Salinity had deleterious effect in all the genotypes of wheat plants and due to the adverse effect of salinity on membrane injury and MDA content of the leaves which increased significantly from their respective control treatment in field (10 & 20 days after anthesis) as well as in lab conditions (14 & 21 days after germination). Chlorophyll a, chlorophyll b, total chlorophyll content, carotenoid content and chlorophyll stability index decreased significantly with gradual increase in salinity levels in all the genotypes under field and lab conditions. Plant height and plant biomass also decreased with increasing level of salinity among all genotypes under field conditions. Grain weight/m2 and 1000 grain weight also decreased with increasing levels of salinity in all genotypes under field conditions. Minimum salt susceptibility index was observed in Kh-65 & KRL-210 and maximum salt susceptibility index was observed in genotype P-9118 & P-9119. Therefore, it is concluded that KRL-210 and Kh- 65(check) are the most resistant towards salinity followed by P-9117 whereas genotypes P-9118 and P- 9119 are the most susceptible genotypes.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810033575
dc.keywordsWheat genotypes, Salinity, Chlorophyll content, Carotenoid content, Membrane injury, Lipid peroxidationen_US
dc.language.isoenen_US
dc.publisherCCSHAUen_US
dc.subPlant Physiologyen_US
dc.subjectnullen_US
dc.themeMorpho-physiological screening for salinity tolerant genotypes in wheat [Triticum aestivum (L.)]en_US
dc.these.typeM.Scen_US
dc.titleMorpho-physiological screening for salinity tolerant genotypes in wheat [Triticum aestivum (L.)]en_US
dc.typeThesisen_US
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