D2 analysis in anthurium (Anthurium andreanum Lind.)
Genetic diversity is a pre-requisite for any plant breeding programme for selection of superior genotypes. The Government of India has identified Kerala as the product specific intensive floriculture zone for anthuriums. Hence a study was conducted on ten genotypes of anthurium at Coconut Research Station, Balaramapuram, Kerala to assess the genetic diversity based on a 14 vegetative and floral traits by using D2 statistics. On the basis of D2 values, the ten genotypes were grouped in to two clusters following Tochers method. The magnitude of D2 values indicated that there was a considerable diversity in the materials studied. Cluster I consisted of 9 genotypes such as 'Liver Red', 'Dragon's tongue', 'Chikas', 'Hawai' 'Orange Tropical red', 'Honduras red', 'Gold spark', 'Esmeralda', 'Chocos' whereas cultivar 'Boroque' alone was included in cluster II. Higher difference of the genotype within cluster (intra cluster) was shown by cluster II to cluster I from 0.00 to 92.06. Intercluster distance between cluster I and II was 749.30. The maximum contribution to the genetic diversity is from leaf area (53%) followed by shelf life (20%), spathe size (11.11%) and angle of inclination (8.89%). This contribution is important for the purpose of further selection and choice of parents for hybridisation.
Reshma, G., Beena, T. and Sathish kumar, S 2017. D2 analysis in anthurium (Anthurium andreanum Lind.). Acta Hort. (ISHS) 1165:79-82
genetic diversity, cluster, hybridisation