Browsing by Author "KAMAGOUD, SUNIL"
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ThesisItem Open Access MORPHOLOGICAL AND MOLECULAR CHARACTERIZATION OF ORIENTAL PICKLING MELON (Cucumis melo var. conomon) GENOTYPES FOR PRODUCTIVITY TRAITS(K.R.C. COLLEGE OF HORTICULTURE, ARABHAVI (UNIVERSITY OF HORTICULTURAL SCIENCES, BAGALKOT), 2018-10-11) KAMAGOUD, SUNIL; SHET, RATNAKAR M.; NISHANI, SANDHYARANI; HANCHINAMANI, C.N.; HONGAL, SHIVANAND; A., PRASHANTA field experiment was conducted during Kharif 2017-18 to study the Morphological and molecular characterization of Oriental pickling melon (Cucumis melo var. conomon) genotypes for productivity traits with 40 genotypes in randomized block design with two replications. Analysis of variance had shown highly significant (P=0.01) difference among genotypes for all twenty one parameters related to growth, yield and quality traits except number of primary branches and 100 seed weight. The estimate of PCV is higher than GCV in all the characters studied indicating influence of environment of expression of characters. High GCV and PCV (>20%) were observed as for nodes at first female flower appearance, number of male flowers, number of female flowers, average fruit weight, number of fruits per vine, fruit yield per vine, Vitamin –C and seed weight per fruit. High heritability (>60%) coupled with high GAM (>20%) were observed for almost all the traits like number of nodes at 30 DAS, vine length at 30 and 60 DAS, number of male flowers, number of female flowers, sex ratio, fruit length, fruit width, average fruit weight, number of fruits per vine, fruit yield per vine, flesh thickness, seed cavity diameter, seed weight per fruit, Vitamin –C and TSS. The traits like number of nodes at 60 DAS, average fruit weight, fruit length, flesh thickness, seed cavity diameter and seed weight per fruit had significant and positive correlation with fruit yield per vine with positive direct effect revealed by correlation and path analysis studies. Direct selection of these traits is effective for increasing the fruit yield per plant. Mahalanobis D2 analysis indicated considerable diversity and 40 genotypes were grouped into 7 clusters. The cluster V showed maximum intra cluster diversity. Inter cluster distance revealed the maximum divergence between clusters IV and VI followed by cluster III and VI. Molecular characterization was carried out to know the genetic diversity using PCR based SRAP markers. The similarity matrix coefficient ranged from 0 to 100 per cent, suggesting a low to higher genetic variation within oriental pickling melon genotypes. Cluster analysis of oriental pickling melon genotypes by employing Jaccard’s Co-efficient method led to the grouping of the genotypes into two distinct major clusters. In the present study it can be concluded that genotypes Manabagi-1, SS- 14, Local-5, Siddapur-1 and SS-16 recorded higher yield and found superior over all other genotypes.