Vol. 7, Issue 1 (2019)
Genetic diversity and principal component analysis based on vegetative, floral and bulbous traits in narcissus (Narcissus pseudonarcissus L.)
Author(s): Mast Ram Dhiman, Sandeep Kumar, Chander Parkash, Nidhish Gautam and Rajender Singh
Abstract: The present investigation was carried out with the objective to the assess the nature and magnitude of variability and extent of genetic divergence among different genotypes of narcissus on the basis of vegetative, floral and bulbous traits. Experimental results revealed significant differences among nine genotypes for different traits under study. Earliest scape emergence (64.43 days) and flowering (80.57 days) and highest bulb size (4.22 cm), weight of bulb (67.86 g) and bulblets (14.27 g) was recorded in the genotype Cumlaude, while largest flower size (8.37 cm) was observed in the cultivar Carlton. Further, significant positive correlations of scape length (0.825), weight of bulb (0.914) and root length (0.876) was recorded with bulb size. The principal component analysis (PCA) revealed that 90.97 % of total variations were explained by first four components. Further, loading of different traits based on first two principal components indicated that days to goose neck stage, bulb size, weight of bulb and root length are the main components of divergence among nine genotypes, whereas other traits had comparatively lesser contributions in the divergence. Based on the hierarchical cluster analysis, nine genotypes were grouped into two major clusters. Hence, crossing between the genotypes of these groups is expected to yield heterotic hybrids in future breeding programs.
Fig. 1: Daffodil cultivars used for present study
Fig. 2: Loading of different traits based on first two principle components
Fig. 3: Dendrogram showing clustering pattern of 9 daffodil cultivars based on 14 morphological and bulbous traits constructed using complete linkage Euclidean distance method
Pages: 724-729 | 503 Views 62 Downloads
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How to cite this article:
Mast Ram Dhiman, Sandeep Kumar, Chander Parkash, Nidhish Gautam, Rajender Singh. Genetic diversity and principal component analysis based on vegetative, floral and bulbous traits in narcissus (Narcissus pseudonarcissus L.). Int J Chem Stud 2019;7(1):724-729.
