| Titre |
Morpho-agronomic variability of three kola trees accessions [Cola nitida (Vent.) Schott et Endl., Cola acuminata (P. Beauv.) Schott et Endl., and Garcinia kola Heckel] from Southern Benin |
| Auteurs |
ADOUKONOU AWO SAGBADJA HUBERT [2],
|
| Journal: |
Genet Resour Crop Evol 63: 561 |
| Catégorie Journal: |
Internationale |
| Impact factor: |
0 |
| Volume Journal: |
63 |
| DOI: |
10.1007/s10722-015-0362-z |
| Resume |
Cola nitida, Cola acuminata and Garcinia
kola are part of underutilized forest resources in
Benin. The lack of information on these trees limits
seriously the exploitation, regeneration and use of
their genetic resources. This study aimed to evaluate
the morphological diversity of these kola trees for a
better management and rationale utilization of their
genetic resources. For this purpose, 90 trees samples
were characterized through 19 descriptors for G. kola,
and 38 for both C. nitida and C. acuminata. An
analysis of variance and a numerical classification
followed by principal component analysis of quantitative
data in addition to the descriptive analysis of the
qualitative data were used to describe the inter and
intra-specific diversity in these kola trees. The study
revealed strong correlations (positive and negative)
between the different variables. The morphometric
data analysis revealed significant differences among
trees of different kola species with the most discriminative
traits related to the plant size and fruit
parameters such as fruit length, fruit thickness and
fruit weight. G. kola was the tallest species displaying
the largest fruit thickness while C. acuminata and C.
nitida had comparably the longest and most weighted
fruits. Important intraspecific variability was also
detected within kola species with C. acuminata
showing the lowest diversity. Cluster analyses conducted
separately on species data revealed clear
phenotypic organization among the analyzed trees
with seven clusters identified in C. nitida, five in G.
kola and four in C. acuminata. This study provided
useful information on the genetic variability of three kola species and is a preliminary base that could be
used in a breeding program. |
| Mots clés |
Benin Characterization Cola nitida
Cola acuminata Diversity Fruit tree Garcinia
kola Kola tree Morphotype |
| Pages |
561 - 579 |
| Fichier |
 (PDF) |