Pterocarpus erinaceus is a high socioeconomic tree of African savannahs. It is overexploited due to technological qualities of its wood, forage value and medicinal uses. The main objective of this study is the assessment of the morphological variability within this species in Côte d'Ivoire, in sight of rational management. Fourteen morphological traits were used to appraise the variability within 144 trees in production from six sites (Yalo, Moyenne Marahoué, Kahanso, Kouassi-Ndawa, Ouarigué and Téguirdouo). The results indicate that the variability reaches 6.60 for the height of the fruit and 45.99 for the weight of the fruit. The results reveal also that there are three morphological groups of P. erinaceus in Côte d'Ivoire. Of the four traits that revealed a distinction among the three morphotypes, only the width of leaves and the number of leaflets enabled their complete distinction. Trees of group 1 have long leaves with a high number of leaflets and large fruits. Trees of group 2 have small leaves with a reduced number of leaflets and large fruits. Then trees of group 3 have intermediate value of width of leaves and number of leaflet and small fruits. The three morphological groups could be useful for varietal selection of P. erinaceus in Côte d'Ivoire.

Afin de préserver les nombreux biens et services fournis par Parkia biglobosa (Jacq.) R. Br. ex G. Don, Fabaceae, il est fondamental de connaître la variabilité  phénotypique de l’espèce pour sa domestication. L’objectif de cette étude est de déterminer des caractères morphologiques permettant d’identifier des arbres-plus dans les savanes de Côte d’Ivoire. La variabilité phénotypique d’arbres distants d’au moins 100 m des trois types de savane a été étudiée à travers 22 caractères quantitatifs relatifs aux troncs, feuilles, fruits et graines. La matrice de données obtenue a été analysée avec différents tests tels que MANOVA suivie de ANOVA 1, AFD et la CAH. Les paramètres permettant de distinguer les arbres selon leur origine sont : hauteur totale d’arbre, épaisseur graine, poids de graine et pulpe par fruit, longueur du fruit, longueur et épaisseur du pédicelle, longueur et épaisseur du pédoncule. Les arbres en savane guinéenne ont de longs et épais pédoncules, des pédicelles épais et de longs fruits. Les arbres en savane sub-soudanaise sont hauts avec des graines et pédicelles épais, un poids de graine et de pulpe par fruit en moyenne élevé alors que les arbres en savane soudanaise sont hauts avec un long pédoncule. Mots clés: Parkia biglobosa, néré, variabilité phénotypique, conservation, savane. English Title: Phenotypical caracterization of african locust bean (Parkia biglobosa (Jacq.) R. Br. ex G. Don, Fabaceae) from three savannahs types in Côte d’Ivoire To preserve goods and services provided by Parkia biglobosa (Jacq.) R. Br. ex G. Don, Fabaceae, it is essential to know the phenotypical variability of this species for domestication purpose. The objective of this study is to define morphological discriminant traits to identify tree-plus in the savannahs from Côte d'Ivoire. The phenotypical variability of trees distant at least 100 m from three types of savannah was studied through 22 quantitative traits related to trunks, leaves, fruits and seeds. Matrix data was analyzed with different tests such as MANOVA followed by ANOVA 1, AFD and CAH. Traits that allow distinguishing trees according to their origin are: total height, seed thickness, seed and pulp weight per fruit, fruit length, pedicel length and thickness, peduncle length and thickness. In the Guinean savannah, trees have long and thick peduncles, thick pedicels and long fruits. In Sub-Sudanese savannah, trees are tall with thick seeds and pedicels, high seeds and pulp weight per fruit while Sudanese savannah trees are tall with a long peduncle. Keywords: Parkia biglobosa, locust bean, phenotypical variability, conservation, savannah.

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In order to characterize neglected and underutilized legumes seeds (NULs), prospection, collection and characterization were carried out in five administrative regions from Côte d'Ivoire. Two thousand and fifty-four accessions were collected. NULs cultivation is done mainly by women (88.1% compared to 11.9% of men). Productors distinguish 22 morphotypes of NULs based on seeds shapes, colors and patterns. Morphological traits of the collected morphotypes revealed a significant phenotypic polymorphism. Quantitative analyses showed a clear structure of accessions; three main groups were revealed. The first group contains accessions with large and thick seeds, but a low index shape opposite to group II with high index shape. Seeds of group III are characterized by small width and thickness, but a high shape index. Analyses of qualitative traits revealed five groups characterized by heterogeneous or homogeneous coloured integument, inked or elevated edge of hilum, presence or absence of eye.

This study aims to characterize the genetic diversity of two populations of Garcinia kola using five RAPD markers in order to contribute to the development of sustainable management and conservation strategy for this species. Genomic Deoxyribonucleic acid (DNA) extracted from leaf fragments of 94 trees from two agroecological (south and west) zones according to Cethyl Trimethyl Ammonium Bromide (CTAB) protocol was analyzed. The mean number of alleles was ranged from 14.2 to 21.2 and the effective number of alleles ranged from 8.62 to 9.44. The average Shannon diversity index was ranged from 2.08 to 2.59 and the average genetic diversity was estimated to be 0.80. A total of 58 polymorphic bands were identified with a polymorphism rate of 100%. According to analysis of molecular variance the most important component of the genetic variation was obtained within population (94%). The analysis of the genetic diversity of all the trees revealed the existence of two groups composed of the trees from the two populations. In addition, genetic differentiation between the two populations was relatively moderate (Fst = 0.061). Sustainable management of G. kola trees should be achieved through in situ conservation. But for ex situ conservation it would be more practical to take as many individuals as possible within populations.