Mapping of quantitative trait loci (QTLs) associated with biological nitrogen fixation in an interspecific cross of chickpea

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dc.contributor.advisorSharma, Poonam
dc.contributor.authorNagpal, Sharon
dc.date.accessioned2021-12-21T09:35:12Z
dc.date.available2021-12-21T09:35:12Z
dc.date.issued2021
dc.description.abstractThe current study was aimed at investigating the genetic variation responsible for nitrogen fixation efficiency, growth and yield attributing traits in Cicer. The phenotypic variation was studied at two different agroclimatic zones viz., Central plain zone (Ludhiana) and Sub mountain undulating zone (Gurdaspur) for 2 consecutive rabi seasons (2018-20). Both the experimental sites varied significantly for the climatic conditions and soil physicochemical and nutrient profiles over the years. Wild parent C. reticulatum ILWC292 showed significantly high performance in terms of biological nitrogen fixation (BNF) traits over the cultivated C. arietinum GPF-2. On pooled mean basis of 2 years across the zones, the nodulation (19.7nodules/plant), nodule dry weight (172.8 mg/plant) and leghaemoglobin content (4.06 mg/g fresh wt. of nodules) were higher in wild over cultivated Cicer species. The triple interaction of genotypes × locations × years was significant (P0.05) and were used for quantitative trait loci (QTL) analysis. Using QTL cartographer, markers- CAGM02697, CAGM09835, CAGM09777, CAGM09227, CAGM09021, CAGM08679 were found linked with QTLs for BNF. These markers can be validated further for identification of genes for BNF traits and marker assisted selection in chickpea. To the best of our knowledge this is the first report on identification of markers associated with key BNF traits in chickpea.en_US
dc.identifier.citationNagpal, Sharon (2021). Mapping of quantitative trait loci (QTLs) associated with biological nitrogen fixation in an interspecific cross of chickpea (Unpublished Ph.D. Dissertation). Punjab Agricultural University, Ludhiana, Punjab, India.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810179635
dc.keywordsBNF, Cicer reticulatum, Cicer arietinum, leghaemoglobin, PAGE, SSR, QTLen_US
dc.language.isoEnglishen_US
dc.pages113en_US
dc.publisherPunjab Agricultural University, Ludhianaen_US
dc.research.problemMapping of quantitative trait loci (QTLs) associated with biological nitrogen fixation in an interspecific cross of chickpeaen_US
dc.subMicrobiologyen_US
dc.themeMapping of quantitative trait loci (QTLs) associated with biological nitrogen fixation in an interspecific cross of chickpeaen_US
dc.these.typePh.Den_US
dc.titleMapping of quantitative trait loci (QTLs) associated with biological nitrogen fixation in an interspecific cross of chickpeaen_US
dc.typeThesisen_US
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