Analyse différentielle du rendement chez neuf génotypes de palmier à huile (Elaeis guineensis Jacq.) sous conditions de stress hydriques

Objectif: La sécheresse observée en Afrique sub-saharienne est responsable de précipitations de plus en plus irrégulières d’une année à une autre qui rendent difficile la sélection et la recommandation des génotypes performants de palmier à huile. L’objectif de cette étude est d’évaluer et de classer des génotypes de palmier à huile selon leurs degrés de performance et de stabilité au fil des années. Méthodologie et résultats : Pour ce faire, des données de rendement ont été analysées chez neuf génotypes de palmier (L1 à L9) sur 18 campagnes de production (de 2000-2001 à 2018-2019) à l’aide de l’indice de supériorité génotypique (Pi) et de la régression linéaire simple. Les résultats obtenus ont montré que les génotypes L1, L2, L6 et L8 sont performants et stables et que le génotype L2 présente une adaptation spécifique aux années contraignantes. En revanche, les génotypes L3, L4, L5 et L9 sont considérés comme des génotypes peu performantes et instables. Le génotype L7 quant à lui, présente la plus faible performance. Conclusion et application des résultats : Ces résultats, en plus de fournir des détails sur les performances des 9 génotypes étudiés, ont permis d’identifier les génotypes contrastés à considérer dans les études approfondies sur l’adaptation du palmier à huile à la sécheresse. Mots clés : Palmier à huile, sécheresse, performance, stabilité, année, génotype. Yehouessi et al., J. Appl. Biosci. 2020 Analyse différentielle du rendement chez neuf génotypes de palmier à huile (Elaeis guineensis Jacq.) sous conditions de stress hydriques) 15781 Differential analysis of yield in nine genotypes of oil palm (Elaeis guineensis Jacq.) Under water stress conditions ABSTRACT Objective: The drought observed in sub-Saharan Africa is responsible for increasingly irregular rainfall from year to year, which makes it difficult to select and recommend efficient oil palm genotypes. This study aims to assess and classify oil palm genotypes according to their degrees of performance and stability over the years. Methodology and Results : Thus, yield data were analyzed in nine palm genotypes (L1 to L9) over 18 production campaigns (from 2000-2001 to 2018-2019) using the genotypic superiority index (Pi) and simple linear regression. The results obtained have shown that the L1, L2, L6 and L8 genotypes are efficient and stable and that the L2 genotype has a specific adaptation to restrictive years. In contrast, L3, L4, L5 and L9 are considered to be poorly performing and unstable genotypes. The L7 genotype has the lowest performance. Conclusion and application of results : These results, in addition to providing details on the performance of the 9 genotypes studied, made it possible to identify the contrasting genotypes to be considered in in-depth studies on the adaptation of oil palm to drought. Keywords : Oil palm, drought, performance, stability, year, genotype

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A diachronic onomasiological approach to early Bantu oil palm vocabulary

Studies in African Linguistics ◽

10.32473/sal.v34i2.107328 ◽

2005 ◽

Vol 34 (2) ◽

pp. 113-158

Author(s):

Koen Bostoen

Keyword(s):

Oil Palm ◽

Semantic Analysis ◽

Elaeis Guineensis ◽

Common Noun ◽

Geographic Distributions ◽

Elaeis Guineensis Jacq ◽

Sub Saharan

Despite its ancient and long-lasting importance to sub-Saharan African economies, there has been no systematic attempt to reconstruct Proto-Bantu vocabulary referring to the oil palm (Elaeis guineensis Jacq.). Scholars have identified four common noun stems for 'oil palm', i.e. *-bida (cl. 5/6, 7/8), o_bd (cl. 5/6), *-gadi (cl. 9/10), and *-tende (el. 3/4) but determined the stems' geographic distributions within the Bantu domain to be insufficiently widespread to reflect a Proto-Bantu origin. From the wider perspective of Niger-Congo, certain of these nouns undoubtedly reconstruct to a level higher than Narrow Bantu. This paper presents an onomasiological approach to the earliest Bantu 'oil palm' vocabulary, offering a diachronic semantic analysis of the main noun stems, and an evaluation of the historical implications of their current-day distribution, both with respect to each other and in the light of the available Niger-Congo data.

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Evaluation De La Production De Cinq Genotypes De Palmier A Huile (Elaeis Guinnensis Jacq.) Replantes Sur Des Parcelles A Haute Densite De Fusariose

European Scientific Journal ESJ ◽

10.19044/esj.2017.v13n18p562 ◽

2017 ◽

Vol 13 (18) ◽

pp. 562

Author(s):

Désiré Allou ◽

Kouadio Olivier Kouakou ◽

Diabaté Sekou ◽

Assanvo Simon-Pierre Nguetta

Keyword(s):

Fusarium Wilt ◽

Oil Palm ◽

Plant Material ◽

Elaeis Guineensis ◽

Physiological State ◽

Parental Origin ◽

Tolerant Plant ◽

Palmier À Huile ◽

Elaeis Guineensis Jacq ◽

Serious Disease

Fusarium wilt is the most serious disease of the oil palm (Elaeis guineensis Jacq.) In Africa. The methods of fighting this disease are mainly based on the search for tolerant plant material, so the researchers of CNRA were able to make available to the producers of the genotypes tolerant to the Fusarium wilt. However, two of these supposedly tolerant genotypes, planted on plot D9-3 in Ehania, a highly endemic plot, showed symptoms of vascular Fusarium wilt after 9 years of replanting. The evaluation of production responses in comparison with the physiological states of other genotypes of the same parental origin showed that the LM25373 and LM25635 progenies retained their ability to produce in spite of their doubtful physiological state. The appearance of the external symptoms of FHB did not affect the cycles of production of these so-called diseased progeny.

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