AURIFERE
PORTAIL DOCUMENTAIRE DE L'INSTITUT SENEGALAIS DE RECHERCHES AGRICOLES
Elaboré par
L’Unité d’Information et de Valorisation des Résultats de la Recherche (UNIVAL)
'Un Accès Unique aux Ressources d’Information et aux Fonds documentaires pour une Recherche d’Excellence '
A partir de cette page vous pouvez :
Retourner au premier écran avec les dernières notices... |
Détail de l'auteur
Auteur A Guissé
Documents disponibles écrits par cet auteur
Affiner la rechercheCharacterizing root reponses to low phosphorus in pear millet (Pennisetum glaucum (L) R Br) / Issa Faye
Characterizing root reponses to low phosphorus in pear millet (Pennisetum glaucum (L) R Br) [texte imprimé] / Issa Faye, Auteur ; Diouf O., Auteur ; A Guissé, Auteur ; M. Sène, Auteur ; N Diallo, Auteur . - (SN) : ISRA/CERAAS, 2006 . - 08p.
Langues : Anglais (eng)
Catégories : SCIENCES ET PRODUCTIONS VEGETALES Mots-clés : Déficit D'eau, Variété de ¨Poivre, Culture Hydroponique, Sol Index. décimale : F090-Horticultuire et jardinage : généralités Exemplaires
Code-barres Cote Support Localisation Section Disponibilité CR0600001 F090- FAY Publication CERAAS/Thiès Rayons Exclu du prêt Documents numériques
Cliquer pour voir pdfURL Agronomy, Vol. 9, n°867. Genotype-Environment Interaction: Trade-Os between the Agronomic Performance and Stability of Dual-Purpose Sorghum (Sorghum bicolor L. Moench) Genotypes in Senegal / Malick Ndiaye
Agronomy, Vol. 9, n°867. Genotype-Environment Interaction: Trade-Os between the Agronomic Performance and Stability of Dual-Purpose Sorghum (Sorghum bicolor L. Moench) Genotypes in Senegal [texte imprimé] / Malick Ndiaye, Auteur ; Myriam Adam, Auteur ; Komla Kyky Ganyo, Auteur ; A Guissé, Auteur ; Ndiaga Cissé, Auteur ; Bertrant Muller, Auteur . - [s.d.] . - 16 p.
Langues : Français (fre)
Catégories : SCIENCES ET PRODUCTIONS VEGETALES Mots-clés : Sorgho, Interaction G E, performance, stabilité, AMMI, génotype hybride Index. décimale : F313- Variation des caractères: Genotype , phenotype, caractère physiologique, vigueur, adaptation Résumé : Sorghum (Sorghum bicolor (L.) Moench) is one of the main cereals grown in arid and semi-arid tropical regions [1]. Sorghum is well-adapted to warm regions and, given its plasticity, is able to grow in both temperate and tropical regions. With a global production of about 68.9 million tons in 2015, from around 49.9 million hectares, sorghum ranks fifth in cereal production after maize, wheat, rice and barley [2]. It is mainly used for animal feed in most developed countries, but in Africa and India it is a staple food for millions of people [3]. In addition, sorghum is one of the most important crops that can be used for bioethanol production [4]. In Senegal, after pearl millet and maize, sorghum is the third most important dryland cereal crop, with an estimated total area of more than 221,329 ha for a national production of 225,865 tons and a mean yield of 1,020 kg ha1 [5]. Sorghum production is essential for subsistence agriculture [6]. However, its production comes up against several constraints that lead to low yields, such as irregularities in rainfall distribution exacerbated by climate change, low soil fertility and sandy soils, and various crop diseases and pests [7]. Food security initiatives in Senegal include introducing new sorghum genotypes adapted to dierent soil and climate environments. However, when genotypes are evaluated for recommendation, a common problem arises: the high variability of their productivity from year to year and from environment to environment. Such variability creates diculty in determining which genotypes can be recommended, so it deserves careful consideration. The dierent responses of a genotype in dierent environments are known as genotype environment interaction (G E). Understanding G E interaction will help to (1) identify genotypes with a stable performance in fairly diverse growing conditions, and (2) match specific genotypes to specific environments [8]. Several statistical methods have been developed to characterize the eect of G E interactions of genotypes and to predict phenotypic responses to environmental changes. However, statistical methods for characterizing stability are generally not able to provide an accurate and complete response model for this interaction [9], as the genotypic response to environmental variation is multivariate, while most stability indices have a univariate response [10]. Other methods have therefore been developed to explore G E interaction models. Of these, the AMMI is a robust multivariate method for multi-environmental trials [11]. The additive main eect and multiplicative interaction (AMMI) method combines an analysis of variance (ANOVA) and a principal component analysis (PCA) in a unified approach that can be used to analyze multi-location trials [12–14]. The ANOVA studies the main eects of genotypes and environments and the principal component analysis (PCA) then focuses on the non-additive part of the model representing interaction (G E). AMMI provides the G E interaction sum of squares with a minimum number of degrees of freedom. In addition, AMMI concurrently quantifies the contribution of each genotype and environment to G E interaction, and provides an easy graphical interpretation of the results using a biplot technique to classify genotypes and environments together [12,15]. This technique can therefore be used to identify productive genotypes with wide adaptability and mega-environments, and to delimit environments in which genotypes have specific adaptability [14–16]. The objective of this study was to: (1) analyze the genotypeenvironment interactions, daptability
and stability of 10 sorghum genotypes in several environments in Senegal using the AMMI method, and (2) identify genotypes that performed well in terms of grain and/or biomass yield (i.e., dual-purpose: food and feed).Exemplaires
Code-barres Cote Support Localisation Section Disponibilité CN1900026 F313- NDI Article scientifique CNRA/Bambey Rayons Exclu du prêt Documents numériques
Cliquer pour visualierURL Biol Fertil Soils. Impact of irrigation water quality on soil nitrifying and total bacterial communities / Ndèye Yacine Badiane Ndour
Biol Fertil Soils. Impact of irrigation water quality on soil nitrifying and total bacterial communities [texte imprimé] / Ndèye Yacine Badiane Ndour, Auteur ; E Baudoin, Auteur ; A Guissé, Auteur ; M. Seck, Auteur ; M. Khouma, Auteur ; A Brauman, Auteur . - Dakar (Sénégal) : ISRA/LNRPV, 2008 . - 07p. : ref,;.
Langues : Anglais (eng)
Catégories : RESSOURCES NATURELLES ET ENVIRONNEMENT Mots-clés : Irrigation, Qualité D'eau, Sol Nutritif, Eau souterraine Index. décimale : P105-Alimentation en eau, consommation en eau Exemplaires
Code-barres Cote Support Localisation Section Disponibilité PV1700026 P105- NDO Article scientifique LNRPV Rayons Exclu du prêt Documents numériques
Cliquer pour voir pdfURL European Journal of Soil Biology, vol.75. Effects of residue quality and soil mineral N on microbial activities and soil aggregation in a tropical sandy soil in Senegal / S. N. Sall
European Journal of Soil Biology, vol.75. Effects of residue quality and soil mineral N on microbial activities and soil aggregation in a tropical sandy soil in Senegal [texte imprimé] / S. N. Sall, Auteur ; Dominique Masse, Auteur ; N. H. Diallo, Auteur ; Thierno M.B. Sow, Auteur ; E Hien, Auteur ; A Guissé, Auteur . - 2016 . - pp.62-69; ill.
Langues : Anglais (eng)
Catégories : RESSOURCES NATURELLES ET ENVIRONNEMENT Mots-clés : Qualité des résidus, Minéral , agrégation , sol sableux Index. décimale : P332-Physique et mécanique du sol : propriétés physiques du sol ; mécanique et structure du sol Résumé : The role played by organic residues and exogenous mineral N in the formation of stable soil aggregates in nutrient-poor, tropical sandy soils of Senegal is relatively unclear. This study assessed the effect of two representative low and high quality residues (Zea mays and Crotalaria retusa respectively) on the formation and stability of soil aggregates. The formation and stability of aggregates, soil biomass, root biomass, fungal hyphae length, C mineralization and chitinase activity, as a specific biomarker of the activity of fungal populations, were measured under controlled conditions over 120 days. In both the
control and amended soils, there were more macroaggregates (>2000 mm) and mesoaggregates (250 e2000 mm) than microaggregates (50e250 mm and <50 mm). The formation of macroaggregates and stability (MWD) were not significantly affected by the quality of residues. Amendment with organic residues shifted the distribution of the aggregate fractions. The macroaggregates increased by 26% with crotalaria and by 35% with maize residues while mesoaggregates decreased by 18% with crotalaria and by 26% with maize residues and microaggregates decreased by 8% with crotalaria and by 9% with maize residues. This study also onfirmed that macroaggregates are formed from micro- and mesoaggregates. The total microbial biomass was significantly higher in soil amended with maize residues compared to oil with crotalaria residues and the control soil although the fungal hyphae length decreased when the soil was amended with either crop residue. Chitinase activity is the most pertinent indicator associated with acroaggregation stability. Adding mineral N (equivalent to 120 kg N ha1 as urea) to the residue increased microbial biomass and reduced fungal hyphae length but had no effect on macroaggregate formation and fungal activity. These observations suggested that, for short term incubation of soil amended with residues, fungal activity plays a greater role in aggregation in sandy soils than the fungal population density.Exemplaires
Code-barres Cote Support Localisation Section Disponibilité CT1900010 P332-SAL Article scientifique CRA/Tamba Dépot numérique Exclu du prêt Documents numériques
Cliquer pour pdfURL