Morphological Characterization, Variability and Traits Association among Accessions of Three Species of Crassocephalum (Moench.) S. Moore from Nigeria
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Date
2022-09
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Publisher
Agricultural Society of Nigeria
Abstract
Crassocephalum species have served as vegetables for decades, yet they remain undomesticated and
uncultivated. The knowledge of the variability and traits association of these species could enhance the
improvement and thus facilitate their domestication and cultivation. Twenty-one accessions of Crassocephalum
species were characterized in a Randomized Complete Block Design to determine intra and inter-specifies
variability and traits association for their improvement with a view to facilitate their domestication and
cultivation. One way Analysis of Variance (ANOVA), Principal Component Analysis (PCA), and correlation
coefficients were used to analyze the data. The results revealed significant intra and inter-specifies variability
among the accessions characterized. The first three axes of PCA accounted for over 60% of total variation with
leaf length, leaf width, days to 50% flowering, days to maturity, number of achenes/head and number of filled
achenes/head as discriminants. Positive and significant phenotypic correlations were observed between leaf
length and leaf width with petiole length, internode length, peduncle length, and number of days to maturity. High
positive correlation was observed for number of capitula/plant with capitulum diameter and number of filled
achenes per head. Hence, the principal contributors to total variation which are leaf length, leaf width, days to
50% flowering, days to maturity, number of achenes/head and number of filled achenes/head are hereby
suggested to breeders in developing a suitable breeding programme for Crassocephalum crepidioides, C. rubens
and C. togoense
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Citation
Oyelakin et al. (2022)