Classification of Dacryodes edulis (G. Don) H.J. Lam by using morphological and physical characteristics of the fruits: A statistical approach

Safous (2270 fruits) picked on 227 safou trees from Franceville (southeast Gabon) were studied for their morphological and physical characteristics including fruit length, fruit width, fruit volume, fruit mass, pulp thickness, pulp mass, specific gravity and pulp mass/fruit mass ratio. All these cha...

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Bibliographic Details
Published in:Forests, trees and livelihoods trees and livelihoods, 2009, Vol.19 (2), p.99-109
Main Authors: Ondo-Azi, A.S, Missang, C. Ella, Silou, T
Format: Article
Language:English
Subjects:
Burseraceae
Classification
Dacryodes edulis
fruit pulp
fruits (plant anatomy)
length
mass
measurement
morphological characteristics
Multivariate Statistics
physical characteristics
plant morphology
principal component analysis
Safou
Safou fruit
statistical models
thickness
traits
trees
volume
width
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Summary:Safous (2270 fruits) picked on 227 safou trees from Franceville (southeast Gabon) were studied for their morphological and physical characteristics including fruit length, fruit width, fruit volume, fruit mass, pulp thickness, pulp mass, specific gravity and pulp mass/fruit mass ratio. All these characteristics showed continuous and considerable variation, the highest coefficients of variation being recorded for fruit mass (36%), fruit volume (39%) and pulp mass (45%). Data were treated by multivariate statistics tools. Principal Components Analysis (PCA) permitted to select three variables (fruit mass, fruit length and fruit width) for safous classification. Three safous classes were defined by Ascending Hierarchical Clustering (AHC) and these three classes were confirmed by Factorial Discriminant Analysis (FDA) with 94.7% of the population correctly classified. One class is composed of small-size fruits and the other two classes, relatively near, corresponded to medium-size fruits. A model to classify new trees is proposed.
ISSN:1472-8028
2164-3075
DOI:10.1080/14728028.2009.9752658