Assessment of Salix clones for morphological and physiological traits under salt stress

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dc.contributor.advisorThakur, Sapna
dc.contributor.authorManpreet Kaur
dc.date.accessioned2023-06-29T08:58:45Z
dc.date.available2023-06-29T08:58:45Z
dc.date.issued2022
dc.description.abstractThe present investigation entitled “Assessment of Salix clones for morphological and physiological traits under salt stress” was carried out in the teaching area, Department of Forestry and Natural Resources, Punjab Agricultural University, Ludhiana, Punjab during the year, 2021. Stem cuttings of selected five Salix clones were established in a pot experiment in Feb, 2021 arranged in Factorial Completely Randomized Design (CRD) using four replications and were irrigated with 0, 20, 40, 60, 80mM NaCl treatments for the active growth period. The observations on growth and physiological characteristics of clones as well as chemical parameters of soil were recorded at an interval of two months after initiation of salinity treatments i.e., May, July and October. However, the biomass parameters were recorded at the end of experiment. All the growth and biomass traits showed significantly reduction with increase in salinity treatments. Among physiological traits, significant reduction were observed in total chlorophyll, carotenoids, total starch and relative water content, while salinity stress raised the content of proline, total soluble sugar, total soluble protein, total phenol, electrolyte leakage and Na+/K+ ratio in all the clones. The enzymatic activities of POD and SOD increased in all the clones when subjected to higher levels of salinity stress. On the basis of overall mean performance, clone UHF 03 showed better growth and biomass accumulation at 80 mM and was found to be the most tolerant to salinity stress among tested clones. SEM and EDS mapping confirmed anatomical changes and higher Na accumulations in the roots and leaves of Salix in response to salinity stress. Highest heritability and genetic gain were recorded for relative water content, POD, fresh root weight, dry root weight and proline content. Strong correlation was observed for total dry weight with various physiological traits i.e., total starch, relative water content, total chlorophyll, carotenoids, total phenol, electrolyte leakage, Na+/K+ ratio, SOD and POD and thus, these traits must be given due importance while making selection for salt tolerance in Salix species.en_US
dc.identifier.citationManpreet Kaur (2022). Assessment of Salix clones for morphological and physiological traits under salt stress (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810197861
dc.keywordsSalix, clones, salinity, tolerance, growth, biomass, physiology, heritability, correlationen_US
dc.language.isoEnglishen_US
dc.pages86en_US
dc.publisherPunjab Agricultural University, Ludhianaen_US
dc.research.problemAssessment of Salix clones for morphological and physiological traits under salt stressen_US
dc.subForestryen_US
dc.themeAssessment of Salix clones for morphological and physiological traits under salt stressen_US
dc.these.typeM.Scen_US
dc.titleAssessment of Salix clones for morphological and physiological traits under salt stressen_US
dc.typeThesisen_US
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