Objective: An agro-morphological characterization study was carried out on 56 kola trees accessions collected in South and SouthWest Côte d'Ivoire. The objective of the study was to evaluate agromorphological diversity of the accessions and to analyze their structure. Methodology and results: Eleven (11) variables were used to characterize these accessions. Data analysis showed differences between the accessions for all evaluated characters. The principal component analysis showed that 76.35% of the variance is accounted by the 11 analyzed variables. The hierarchical ascendant classification contributed to structure the 56 accessions into three groups. Plants height and leaf area are the main discriminate characters between the groups. Group I, composed of 24 accessions, mainly originating from the SouthWest , is characterized by small kola trees (Height = 16.13 cm) with small leaves (Surf = 27.11 cm²). Group II, composed of 29 accessions, mainly originating from the South, is characterized by medium height (Height = 31.13 cm) and medium leaves (Surf = 52.06 cm²). Group III (3 accessions) has high plant (Height = 54.22 cm) with large leaves (Surf = 81.03 cm²). Conclusion and application: The accessions of the identified groups could be used for the creation of promising new kola trees varieties to improve kola cultivation.
Malgré son importance socioéconomique, la production ivoirienne de noix de cola est confrontée à plusieurs difficultés. Le manque de techniques culturales éprouvées constitue une des contraintes pour la domestication et la culture du colatier. Il est donc nécessaire de mettre au point des techniques adaptées à l’espèce cultivée. L’objectif de cette étude est d’optimiser la méthode de bouturage sous tunnel du colatier (Cola nitida), face aux inconvénients de la multiplication générative. Le dispositif expérimental utilisé est un Split-Splot avec deux facteurs : le génotype avec cinq modalités (5 génotypes) et le nombre de feuilles avec cinq (05) modalités (1, 2, 3, 4 et 5 feuilles diminuées de moitié). Nous avons le génotype en grande parcelle et le nombre de feuilles en petite parcelle. L’aptitude des génotypes au bouturage a été évaluée à six mois à travers le taux de survie et la mesure des paramètres de croissance et de développement. Le génotype L18A1D9 a montré la meilleure aptitude au bouturage avec un taux de survie de 41,7%. Les boutures avec 4 feuilles diminuées de moitié ont eu le meilleur taux de survie (41,7%), un bon enracinement des boutures vivantes (88,9%), une biomasse totale fraîche (4,2 g) et totale sèche (1,7 g) élevée. Le succès du bouturage sous tunnel du colatier est tributaire du génotype et du nombre de feuilles. Le nombre de feuilles recommandé par bouture est de quatre (4) pour le bouturage du colatier sous tunnel.Mot clés : Bouturage, nombre de feuilles, Cola nitida, génotype. Englsih Title: Influence of genotype and number of leaves on the growth in nurseries of cola cuttings (Cola nitida [Wind.] Schott and Endlicher.)Despite its socio-economic importance, kola nut production faces several challenges. Domestication and cultivation of kola requires the adoption of propagation techniques adapted to the crop species. The objective of this study is to optimize kola (Cola nitida) vegetative propagation by cutting under tunnel. The experimental design used was a split-splot with two factors: genotype with five modalities (5 genotypes,) and leave number with five (05) modalities (1, 2, 3, 4 and 5 leaves cut in half). The ability of genotype to cutting propagation was assessed by measuring growth parameters. The survival rate of the cuttings was evaluated at six months. Root growth, number of new leaves, height gain and biomass were subsequently measured. Genotype L18A1D9 has the best ability for vegetative propagation by cuttings with a survival rate of 41.7%. To optimize vegetative propagation by cuttings under tunnel, 4 leaves cut in half by cuttings must be used for acceptable success rate (41.7%), good rooting (88.9%), a high total fresh biomass (4.2 g) and total biomass (1.7g). The success of kola vegetative propagation depends of genotype and the leave number per cutting. The number of leaves per cuttings recommended per cuttings is four (4) for kola vegetative propagation.Keywords: Cuttings, number of leaves, Cola nitida, genotype.
La maladie du balai de sorcière du colatier est la maladie la plus importante du colatier car elle engendre d’énormes pertes de production. L’objectif principal de cette étude était d’identifier des clones de colatiers d’origine ivoirienne qui affichent le meilleur profil de tolérance à la maladie du balai de sorcière et ayant des paramètres de rendement intéressants. Pour atteindre cet objectif, un dispositif expérimental en bloc complètement randomisé à 3 répétitions a été utilisé et le facteur étudié est le clone avec 13 modalités. Les résultats obtenus montrent que 5 clones (clones 305, 314, 318, A2 et A3) n’ont pas subi d’attaque de la maladie. Les clones 311, 313, 315, 321 et 322 ont été moyennement attaqués. Sur la base des paramètres de rendement tels que le poids des noix par follicule et le nombre de noix par follicule, les clones 313 et 323 ont produit les plus grosses noix dont le poids moyen varie entre 31,98±11,60 g et 34,97±8,54 g et le clone 316 a donné un plus grand nombre de noix par follicule (en moyenne, 10,63±1,55 noix par follicules). Une classification combinant le niveau de tolérance des clones et les paramètres de rendement étudiés ont permis d’identifier les clones 313, 322 et 323 comme étant les meilleurs.Mots clés : Maladie du balai de sorcière, colatier, pertes de production, rendement.
The objective of this study was to determine the influence of branch type on the cutting ability of eight kola clones (Cola nitida). To this end, the clones were tested in a split-plot experimental design with the factors studied being the clone and the nature of the branch. After seven weeks of experimentation, survival rates were evaluated for each clone and for each type of cutting. The results showed that the clones were significantly different for the survival rates obtained (p = 0.00). The terminal branches were more suitable for cutting (70.62% survival) than the sub-terminal branches (33.95%). The age of cutting therefore influenced the success of cutting in the clones studied. At the end this work, we note that clones 305, 323, 330, 903A3 and 911A2 are promising for kola tree cutting from terminal branch and that clone 910A1 cut easily with both terminal and sub-terminal branch.
Objective : The present study aims to compare the fertilizing quality of green algae (Azolla caroliniana), compost and NPK applied to tomato in the Daloa area (Côte d'Ivoire). The parameters evaluated are the vegetative growth and yield of these tomatoes. Methodology and results : The trial is performed as a randomized, complete block of four treatments (Azolla caroliniana, compost, NPK and Control) in four replicates. Data are collected on the vegetative cycle of crops. The treatments were compared according to the vegetative parameters : stem height (ht), neck diameter (dc), leaf length (lf) and yield (r). Except NPK treatments received 200 kg / ha for NPK and 100 kg / ha for urea, treatments are fertilized at the same manure rate (30 t / ha). The results indicate Azolla caroliniana statically differ. The average of (ht) is 49.37 ± 0.55 cm with Azolla caroliniana against 37 ± 1 cm for NPK, 34.57 ± 2.2 for compost and 22.95 ± 0.24 for control, except the growth of (dc) where the smallest difference was not significant. (Dc) is 0.71 ± 0.08; against 0.57 ± 0.03 for NPK, 0.55 ± 0.08 for compost and 0.42 ± 0.07 for the control. Yield was high with Azolla caroliniana (26.13 ± 0.86 t / ha tomato) at a density of 37500 plants / ha. Conclusion and application of results:This study shows that Azolla caroliniana gives a high yield with a high density, restores good soil fertility and increases the productivity of the tomato crop.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.