AURIFERE
PORTAIL DOCUMENTAIRE DE L'INSTITUT SENEGALAIS DE RECHERCHES AGRICOLES
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H200-Maladie des plantes. Généralités
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CN0002168 | H200- BOU | Périodique | CNRA/Bambey | Rayons | Exclu du prêt |
Documents numériques
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/ Richard Moise Alansou DIEME
Hindawi International Journal of Agronomy, Vol. 2018. Identification of Sources of Resistance for Peanut Aspergillus flavus Colonization and Aflatoxin Contamination [texte imprimé] / Richard Moise Alansou DIEME, Auteur ; Issa Faye, Auteur ; Yedomon Ange Bovys Zoclanclounon, Auteur ; Daniel Fonceka, Auteur ; Ousmane Ndoye, Auteur ; Papa Madiallacke Diedhiou, Auteur . - [s.d.] . - 7 p. Langues : Anglais ( eng) Catégories : | PROTECTION DES PLANTES ET DES PRODUITS ENTREPOSES
| Mots-clés : | Arachide, Résistance aux maladies, aflatoxine, Aspergillus flavus | Index. décimale : | H200-Maladie des plantes. Généralités | Résumé : | Peanut aflatoxin contamination caused by Aspergillus flavus is a serious constraint for food safety and human health in Senegal. *e present study aimed to identify sources of resistance for A. flavus colonization and aflatoxin contamination. *us, seeds from 67 peanut genotypes were tested under laboratory conditions. Aqueous conidial suspension of an aflatoxinogenic strain of A. flavus was used for inoculation in Petri dishes containing ten seeds of each genotype, and data on incidence and severity were recorded. Total aflatoxin concentration in seeds was determined on 15th day after inoculation using mReader® method. Results showed a significant (p < 0.001) variation of aflatoxin, incidence and severity among the tested peanut genotypes. Incidence ranged from 0 to 70% with a mean of 20.36 ± 0.8%. Out of the 67 genotypes, eight showed incidence less than 10%. Severity ranged from 0 to 44% with a mean value of 8.82 ± 0.45%.*e genotype 12CS_104 showed aflatoxin concentration level in conformity with the European standard (4 ppb). Out of three clusters revealed by hierarchical classification based on disease incidence and severity, the cluster 1 contained 33 genotypes characterised by low incidence and severity values. *ese genotypes can be tested under field conditions to confirm their resistance to A flavus. |
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CN1850028 | H200-DIE | Article scientifique | CNRA/Bambey | Rayons | Exclu du prêt |
Documents numériques
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CN0101642 | H200-GAI | Périodique | UNIVAL | Rayons | Exclu du prêt |
Documents numériques
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Phytopathology. Apparition du virus de la mosaïque de Southern Bean sur haricot niébé au Sénégal = Occurrence of Southern Bean Mosaïc Virus on Cowpea in Senegal [texte imprimé] / D.G. Gaikvad, Auteur . - Bambey (Sénégal) : ISRA/CNRA, 1988 . - p.366-369, : carte. Langues : Français ( fre)
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CN8800302 | H200-GAI | Article scientifique | CNRA/Bambey | Rayons | Exclu du prêt |
Documents numériques
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Plant Genetic Resources. Identification of new sources of resistance for pearl millet downy mildew disease under field conditions [texte imprimé] / Ghislain KANFANY, Auteur ; Amadou Fofana, Auteur ; Pangirayi Tongoona, Auteur ; Agyemang Danquah, Auteur ; Samuel Offei, Auteur ; Eric Danquah, Auteur ; Ndiaga Cissé, Auteur . - Thi-s (Sénégal) : ISRA/CERAAS, 2017 . - 4 p. Langues : Anglais ( eng) Langues originales : Anglais ( eng) Catégories : | SCIENCES ET PRODUCTIONS VEGETALES
| Mots-clés : | mildiou, lignées consanguines, millet perlé, Afrique de l'Ouest et du Centre | Index. décimale : | H200-Maladie des plantes. Généralités | Résumé : | Pearl millet is an important cereal crop for smallholder farmers’ food security in Africa and India. However, its production has stagnated due to several factors such as downy mildew (DM). Thus, a study was conducted to identify new sources of resistance from pearl millet inbred lines derived from a collection of landraces originated from West and Central African countries. A set of 101 lines, including 99 inbred lines from West and Central Africa along with a 7042S and SOSAT C 88 as susceptible and resistant checks, respectively, were evaluated under field conditions with infector rows in Bambey and Nioro research stations during the rainy season of 2016. Data on DM incidence and severity, plant height, flowering time, panicle length and productive tillers were recorded. The results showed highly significant differences among lines for all observed traits. Among the tested lines, 55 including SOSAT C 88 were resistant, 16 moderately resistant and 30 including 7042S were susceptible to the disease. Out of the 55 resistant lines, 20 were disease free. Hierarchical ascendant cluster analysis grouped the lines into three clusters with the DM parameters and plantheight as the most discriminant factors. Cluster II contains the susceptible lines, while cluster III comprises the moderately resistant lines. The lines which belongs to cluster I were characterized by their resistance to the disease. Further use of these available new sources of resistance will be very useful for improvement of pearl millet for DM resistance and other agronomic traits. |
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CN1800018 | F303-KAN | Article scientifique | UNIVAL | Rayons | Exclu du prêt |
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