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ThesisItem Restricted Effect Of Varying Levels Of Nitrogen And Potaasium On Growth Yield,Storage And Processing Qualities Of Potato (Solanum Tuberosum L.)(Punjab Agricultural University ;Ludhiana, 2001) Chopra, Sandeep; Kanwar, J. S.ThesisItem Open Access Analysis of genetic diversity of Indian melon (Cucumis melo L.) land races and its comparison with global reference melon populations(PAU, 2012) Malik, Ajaz Ahmed; Vashisht, V. K.The present investigation entitled, “Analysis of genetic diversity of Indian melon (Cucumis melo L.) land races and its comparison with global reference melon populations” was conducted at Department of Vegetable Science and School of Agricultural Biotechnology, Punjab Agricultural university Ludhiana, during the years 2009 and 2010. Eighty-eight melon accessions collected from utrakhand and Uttar Pradesh states of India representing four agroecological regions (six sub-regions) and eight reference accessions from USA were characterized and evaluated for nineteen morphological traits of plant and fruit, biochemical traits such as T S S, ascorbic acid content, titrable acidity and dry matter content, SSR genotyping and reaction to diseases. Significant differences were noted among all the accessions for all the characters observed. Phenotypic and genotypic coefficients of variation were found to be high for fruit weight and node at which first hermaphrodite flower appears. High heritability alongwith high genetic advance was recorded for fruit weight, node at which first hermaphrodite flower appears, fruit length, seed cavity length, number of primary branches per vine and total soluble solids content. D 2 analysis grouped the accessions into ten clusters. The reference accessions obtained from USA and land races collected from different agro-ecological zones of India were found to be scattered in different clusters. No parallelism was found between genetic and geographic diversity. DNA polymorphism was utilized to cluster the genotypes into different clusters based on similarity as well as dissimilarity coefficients. On basis of SSR analysis, dendrogram clustered 96 accessions into three major groups. There was a significant correlation between botanical groups and the clustering pattern. Accessions elonging to cantalupensis cluster together in cluster I, accessions of reticulatus group cluster together in cluster II and momordica group cluster together in cluster III. However, some accessions of cantalupensis and reticulatus were intermixed in cluster I and II. Reference accessions cluster together forming a genetically unique assemblage in subgroup IIA and shared similarity coefficient of 0.65 with sub-group IIB. This suggested that reference accessions shared genetic affinities with Indian melon accessions that co uld not have been predicted based on their geographic origin. Four accessions were free from CMV and two accessions exhibited immune reaction to downy mildew. The results inferred that these melon accessions could be used to broaden the genetic base of melon.ThesisItem Open Access Characterization Of Melon Germplasm Using Sds-Page Of Seed Proteins(Punjab Agricultural University ;Ludhiana, 2003) Parmar, Ajigurt Manu; Tarsem LalThesisItem Restricted Genetic Analysis Of Economic Traits Over Environments In Okra (Abelmoschus Esculentus (L.) Moench)(Punjab Agricultural University; Ludhiana, 2005) Jindal, Salesh Kumar; Ghai, T RThesisItem Restricted Studies On Genetic Variability For Some Physico-Morphological And Biochemical Traits In Tomato ( Lycopersicon Esculentum Mill.)(Punjab Agricultural University ;Ludhiana, 2003) Ravinder Kaur; Cheema ,D. S.ThesisItem Open Access Studies On Heterosis And Combining Ability Involving Ripening Mutants In Tomato (Lycopersicon Esculentum Mill.)(Punjab Agricultural University; Ludhiana, 2006) Garg, Naveen; Cheema, D.S.ThesisItem Restricted Assessment Of Combining Ability And Gene Effects For Economic Traits In Garden Pea (Pisum Sativum L.)(Punjab Agricultural University ;Ludhiana, 2002) Tarsem Singh; Mohan SinghThesisItem Restricted Genetics Of Yield And Quality Traits In Chilli (Capsicum Annuum L.)(Punjab Agricultural University ;Ludhiana, 2002) Rajinder Kumar; Hundal, J. S.ThesisItem Restricted Studies On Tissue Culture And Genetic Transformation In Tomato ( Lycopersicon Esculentum Mill.)(Punjab Agricultural University; Ludhiana, 2005) Ruma Devi; Dhaliwal, M S