MULTIVARIATE ANALYSIS FOR GENETIC DIVERSITY ESTIMATION AMONG TOMATO (SOLANUM LYCOPERSICUM L.) GENOTYPESAnkita Debnath, Rajesh Kumar, Sita Kumari Prasad, Nisha Sharma and Jitendra Kumar Kushwah
A field experiment was conducted during the year 2017-18 at Department of Horticulture, Sikkim University to study the genetic diversity amongst thirteen genotypes for twelve polygenic traits in tomato (Solanum lycopersicum L.) in randomized block design with three replications. Considerable amount of variability was found for the twelve characters and D2 analysis revealed total 4 clusters, maximum diversity was recorded between cluster II and cluster VI (2859.01), whereas maximum diversity within the cluster was obtained in cluster II (284.27) followed by cluster-I (216.91). The occurrence of divergence amongst genotypes was also assessed in cluster means by the appreciable amount of variability for different traits. Cluster- I had highest mean value for polar diameter (5.03). In cluster II the highest mean values are found in primary branches/plant (7.00), equatorial diameter (5.22), fruit weight (44.01), fruit yield/plant (669.59), ascorbic acid (30.73), protein content (0.29) and total phenol content (285.53). Total phenol content (69.23%) was reported to put maximum contribution towards total diversity.