Vol. 8 (5) : September-October 2017 issue
Green Farming Vol. 8 (5) : 1096-1098 ; September-October, 2017
Genetic divergence studies in sweet potato [Ipomoea batatas(L.) Lam]
VISHAL TRIPATHI1*, CHANDRA DEO2, NIDHI TYAGI3 and DEVRAJ SINGH4
Department of Vegetable Science, Narendra Dev University of Agriculture and Technology, Kumarganj, Faizabad - 224 229 (Uttar Pradesh)
Designation : 1,3,4P.G. Student *(vishal.ambro@gmail.com), 2Associate Professor
Subject : Vegetable Sciences
Paper No. : P-6876
Total Pages : 3
Received : 31 July 2017
Revised accepted : 26 August 2017
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Citation :
VISHAL TRIPATHI, CHANDRA DEO, NIDHI TYAGI and DEVRAJ SINGH. 2017. Genetic divergence studies in sweet potato [Ipomoea batatas (L.) Lam]. Green Farming Vol. 8 (5) : 1096-1098 ; September-October, 2017
ABSTRACT
An investigation was undertaken to study the genetic divergence of 30 sweet potato genotypes subjected to Mahalanobis D2 statistics for 13 characters. Based on D2 values 30 genotypes were grouped into 6 distinct non overlapping clusters. Cluster-I was the largest comprising 11 genotypes, followed by Clusters-III (7) and II (5). Clusters IV and V comprised three genotype each. The maximum intra-cluster distance was recorded for cluster V (67.22) followed by cluster III (53.20) and cluster II (32.70). The maximum inter cluster distance was found by cluster I with VI (312.22) followed by cluster III with VI (264.34) and cluster II with V (262.72). As regards cluster means, Clusters-III, V and VI performed better in most of the biometric characters studied. The high per cent contribution towards genetic divergence was exhibited by the leaf area (38.62%), followed by dry matter (31.49%), total soluble solid (14.48%).
Key words :
Cluster analysis, Genetic divergence, Germplasm, Sweet potato.
