Vol. 7 (5) : September-October 2016 issue
Green Farming Vol. 7 (5) : 1066-1069 ; September-October, 2016
Genetic divergence studies of indigenous mango cultivars of coastal Andhra Pradesh using Mahalanobis D2 analysis
A. HIMABINDU1*, D. SRIHARI2, M. RAJASEKHAR3, V. SUDHAVANI4, P. SUBBARAMMAMMA5 and K. UMA KRISHNA6
Horticultural Research Station, Dr. Y.S.R. Horticultural University, Venkataramannagudem – 534 101, Dist. - West Godavari (Andhra Pradesh)
Designation : 1Ph.D. Scholar *(himabindu291188@gmail.com), 2Controller of Examinations and Dean of Student Affairs,
3Principal Scientist & Head, 4,5Asstt. Professor, 6Associate Professor
Subject : Fruit Science and Pomology
Paper No. : P-4641
Total Pages : 4
Received : 05 January 2016
Revised accepted : 05 August 2016
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Citation :
A. HIMABINDU, D. SRIHARI, M. RAJASEKHAR, V. SUDHAVANI, P. SUBBARAMMAMMA and K. UMA KRISHNA. 2016. Genetic divergence studies of indigenous mango cultivars of coastal Andhra Pradesh using Mahalanobis D2 analysis. Green Farming Vol. 7 (5) : 1066-1069 ; September-October, 2016
ABSTRACT
An experiment was conducted at Horticultural Research Station, Venkataramannagudem, Andhra Pradesh to analyze the genetic diversity among thirty four cultivars using Mahalanobis D2 statistic for thirty quantitative characters in mango. Total phenols followed by fruit skin thickness, fruit weight and pulp weight contributed maximum towards genetic divergence. The thirty four mango cultivars were grouped into 6 clusters. Among all the clusters, clusters I was the largest containing 29 genotypes, the clusters II, III, IV, V and VI were mono genotypic. The mutual relationships between the clusters revealed that inter-cluster distance values were greater than intra-cluster values. The intra-cluster D2 values ranged from 0.00 (Cluster II, III, IV, V and VI) to 248.08 (Cluster I). The inter-cluster D2 values varied from 708.87 (between cluster IV and V) to 2972.61(between cluster III and VI). The high intra and inter cluster distances indicates the presence of wide genetic diversity among the genotypes present within cluster and between the clusters respectively.
Key words :
Biochemical characters, Cluster distances, Genetic divergence, Mahalanobis D2, Mango cultivars.
