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218. Oil palm (Elaeis guineensisJacq.) genetic differences in mineral nutrition: environmental effects on leaflet mineral concentrations of four oil palm progenies☆

Author

Dassou, Olivier Sènankpon, Ollivier, Jean, Vanhove, Wouter, Aholoukpè, Hervé, Impens, Reinout, Bonneau, Xavier, Flori, Albert, Durand-Gasselin, Tristan, Augustin Sinsin, Brice, Adjanohoun, Adolphe, Van Damme, Patrick, Dassou, Olivier Sènankpon, Ollivier, Jean, Vanhove, Wouter, Aholoukpè, Hervé, Impens, Reinout, Bonneau, Xavier, Flori, Albert, Durand-Gasselin, Tristan, Augustin Sinsin, Brice, Adjanohoun, Adolphe, and Van Damme, Patrick

Abstract

Oil palm fertilizer requirements are based on leaflet mineral concentrations. Four oil palm progenies representing a wide genetic diversity of Elaeis guineensisspecies and with contrasting K and Mg leaflet concentrations were tested in Indonesia and Nigeria, environments which differ predominantly in climate. During 5 years, we compared oil palm progenies’ leaflet mineral concentrations between both countries under abundant fertilizer applications to investigate the extent to which they depend on the environment. In the two studied environments, leaflet concentrations significantly differed between progenies for K, Mg and Ca, but the country effect was not found significant (p = 0.352) for any leaflet mineral’s concentration. In both countries, progenies ranked similarly in their mineral categories (lowest and highest cation concentrations within the 4 progenies population), indicating that leaflet mineral concentrations in the tested oil palm progenies are mainly determined by their genetic background. For each progeny, with abundant fertilization, K, Mg and Ca proportions to total leaf cation charge (TLCC) were similar, irrespective of the environments in which the palms were cultivated. We have strong indications that foliar concentrations of K, Mg and Ca are determined by genetic factors which dominate the environmental effect. However, it remains uncertain whether differences in oil palm foliar concentrations between different oil palm progenies imply that they require specific fertilizer amounts to attain an optimal production.

Published
2022
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219. Oil palm (Elaeis guineensisJacq.) genetic differences in mineral nutrition: potassium and magnesium effects on morphological characteristics of four oil palm progenies in Nigeria (West Africa)☆

Author

Dassou, Olivier Sènankpon, Bonneau, Xavier, Aholoukpè, Hervé, Vanhove, Wouter, Ollivier, Jean, Peprah, Stephen, Flori, Albert, Durand-Gasselin, Tristan, Mensah, Apollinaire Guy, Sinsin, Brice Augustin, Van Damme, Patrick, Dassou, Olivier Sènankpon, Bonneau, Xavier, Aholoukpè, Hervé, Vanhove, Wouter, Ollivier, Jean, Peprah, Stephen, Flori, Albert, Durand-Gasselin, Tristan, Mensah, Apollinaire Guy, Sinsin, Brice Augustin, and Van Damme, Patrick

Abstract

We compared four oil palm (Elaeis guineensisJacq.) progenies’ morphological growth characteristics to reveal genotypic differences in plant growth and assess their adaptability in Nigeria’s environment in response to different levels of potassium chloride (KCl) and kieserite fertilizer applications. The studied progenies (C1, C2 and C3 of Deli× La Mé origin and C4 of Deli× Yangambiorigin) represent a wide genetic diversity of oil palm and have shown among a population of 116 different progenies, a contrasting K and Mg leaflet concentrations that covered the extreme ranges of leaflet concentrations in these minerals. The trial consisted of a completely randomized split-plot factorial design with six replicates, where progenies, considered as sub-factor were treated with combinations of 3 levels of potassium chloride (0, 1.5, 3.0 kg of KCl palm−1year−1) and kieserite (0, 0.75, 1.5 kg of MgSO4palm−1year−1) fertilizers (main factor), respectively. Growth characteristics differed significantly among progenies, but not in all studied years. In all progenies, KCl treatments significantly increased the average annual collar girth increment and projected canopy area. Adding 3.0 kg palm−1year−1of KCl significantly increased the total leaf area of progeny C4. Kieserite applications did not have an effect on progenies’ growth characteristics whereas potassium showed to be the main mineral needed for oil palm growth. It was shown that with equal amounts of fertilizers applied, progeny C3 had better morphological traits than the other progenies, suggesting that the effective nutrient requirements should be assessed for each individual progeny and that fertilization should be adapted accordingly.

Published
2022
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244. Catalytic Enantioselective Synthesis of α-Arylaminocyclobutanones.

Author

Aitken, David J., Caboni, Pierluigi, Eijsberg, Hendrik, Frongia, Angelo, Guillot, Régis, Ollivier, Jean, Piras, Pier Paolo, and Secci, Francesco

Subjects
ENANTIOSELECTIVE catalysis, AMADORI compounds, ADVANCED glycation end-products, CHEMICAL reactions, CHEMICAL processes
Abstract

A catalytic enantioselective synthesis of α-arylaminocyclobutanones from racemic α-hydroxycyclobutanone and a selection of N-alkylanilines has been established, via a tandem condensation/keto-enol tautomerization process reminiscent of the Amadori and Heyns rearrangements. [ABSTRACT FROM AUTHOR]

Published
2014
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245. Recent Progress in the Synthetic Assembly of 2-Cyclopentenones.

Author

Aitken, David J., Eijsberg, Hendrik, Frongia, Angelo, Ollivier, Jean, and Pirasb, Pier Paolo

Subjects
CYCLOPENTENONE, ANNULATION, RING formation (Chemistry), ALICYCLIC compounds, CHEMICAL synthesis, CHEMICAL reactions
Abstract

An overview of the most important synthetic strategies currently available for the preparation of cyclopent-2-enones is presented and illustrated with recent applications. [ABSTRACT FROM AUTHOR]

Published
2014
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250. Stereoselective synthesis of highly functionalized cyclopropanes: application to the asymmetric synthesis of (1S,2S)-2,3-methanoamino acids

Author

Dorizon, Philippe, Su, Guifa, Ludvig, Gitte, Nikitina, Lilyia, Paugam, Renee, Ollivier, Jean, and Salaun, Jacques

Subjects
Stereochemistry -- Case studies, Chemical reactions -- Research, Organic acids -- Research, Carboxylic acids -- Research, Cyclic compounds -- Research, Biological sciences, Chemistry
Abstract

A study demonstrates that the 1-amino-2-ethenylcyclopropanecarbonitrile, efficient precursor of natural and non-natural 1-aminocyclopropanecarboxylic acids and various cyclopropanes of biological significance can be obtained diastereoselectively. This was accomplished through a simple one-pot palladium(O)-catalyzed tandem alkylation and SN' cyclization of allylic dichloride by ketimines derived from aminoacetonitrile. Experimental methods and results are discussed.

Published
1999

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