2000•Indian Journal of Plant Genetic ResourcesOpen access

Analysis of genetic divergence of sunflower inbred lines (Helianthus annuus L.)

N. V. Durga Prasad Rao, A.R.G. Ranganatha, Yeshala Chandra Mohan, M. V. N. Kumar

Abstract

Genetic divergence of 77 inbred lines of sunflower for 11 characters were assessed by using Mahalanobis's D2 statistic. The genotypes were grouped into 10 clusters. No relationship between geographic origin and genetic diversity was observed. Based on inter cluster distance, maximum genetic diversity was observed between genotypes belonging to cluster II and VII. Hence, the genotypes belonging to above clusters will be very useful in the crossing programme and may result high amount of heterosis. Characters viz., plant height, number of filled seeds per head and head diameter contributed more towards genetic divergence.

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Key concepts: Sunflower, Genetic divergence, Mahalanobis distance, Genetic diversity, Heterosis, Inbred strain, Genetic distance, Veterinary medicine