Untitled

Abstract

The seedling morphology of eleven taxa of Amaranthaceae has been investigated. Among the 31 seedling morphological characters, the characters like length, surface of hypocotyl; apex, shape, surface, petiole of paracotyledons; base, apex, surface, margin, petiole of first two leaves; phyllotaxy, apex, surface, base of subsequent leaves (eophylls); length, surface of epicotyl appeared to be useful. Following the methods of numerical taxonomy, i.e. Cluster Analysis, Principal Component Analysis, the seedling morphological characters have been assessed. Cluster analysis summarized the relationship among the investigated taxa into a phenogram where the investigated taxa were sorted into five distinct groups. Seedling morphological characters are useful to distinguish between the species that are presented as artificial key.

Morphological Variability and Taxonomic Relationship of Sorghum bicolor (L.) Moench Accessions Based on Qualitative Characters

“…In this case PCA has important role in identifying morphological variation patterns [23] and in determining the relative contribution of characters to the variations found in samples under study [3]. Due to its complementary role, PCA was commonly used in conjunction with cluster analysis in taxonomic studies at family, genus, and species level such as those reported on Amaranthaceae [33], Abelmoschus [34], and Mangifera indica [35]. Accordingly, combination of these two multivariate analysis methods, the cluster analysis and PCA, has also been applied widely in sorghum diversity studies [12,27,28,36,37].…”