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Détail de l'auteur
Auteur Eric Danquah
Documents disponibles écrits par cet auteur
Affiner la rechercheHindawi International Journal of Agronomy, Vol 2019. Estimates of Combining Ability and Heterosis for Yield and Its Related Traits in Pearl Millet Inbred Lines under Downy Mildew Prevalent Areas of Senegal / Ghislain KANFANY
Hindawi International Journal of Agronomy, Vol 2019. Estimates of Combining Ability and Heterosis for Yield and Its Related Traits in Pearl Millet Inbred Lines under Downy Mildew Prevalent Areas of Senegal [texte imprimé] / Ghislain KANFANY, Auteur ; Amadou Fofana, Auteur ; Pangirayi Tongoona, Auteur ; Agyemang Danquah, Auteur ; Samuel Offei, Auteur ; Eric Danquah, Auteur . - 2018 . - 12 p.
Langues : Anglais (eng)
Catégories : SCIENCES ET PRODUCTIONS VEGETALES Mots-clés : Mil, croisement, amélioration génétique, hybride, cultivar Index. décimale : F028-Génétique et amélioration des plantes Résumé : Pearl millet is an important cereal crop for smallholder farmers’ food security inWest and Central Africa. However, its production has stagnated due to several factors such as the continuous use of local populations. A set of 17 inbred lines was crossed with Sosat C 88 and Souna 3 following a line × tester mating design. The "1 hybrids, their parents, and a check were evaluated in Bambey and Nioro research stations during the rainy season of 2017. Data on downymildew incidence, plant height, flowering time, panicle length and diameter, productive tillers, thousand-grain weight, panicle, and grain yield were recorded. GCA and SCA mean squares were significant for most of the traits indicating that both additive and nonadditive gene effects were involved in the control of the inheritance of these traits. However, the contribution of GCA to total mean squares was higher than that of SCA for all the traits, providing that additive gene action wasmore important in their inheritance.The top-cross hybrid IBL155-2-1 × Sosat C 88 exhibited negative and significant SCA effects for downy mildew incidence, flowering time, and plant height. Lines IBL003-B-1, IBL091-1-1, IBL095-4-1, IBL110-B-1, and IBL 206-1-1 had positive GCA effects for grain yield and negative GCA effects for downy mildew, flowering time, and plant height.These lines can be used as parents to create synthetic varieties or hybrids En ligne : https://doi.org/10.1155/2018/3439090 Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Journal of Plant Pathology. Evidence of pathogenic variation in Sclerospora graminicola populations from pearl millet growing regions in Senegal / Ghislain KANFANY
Journal of Plant Pathology. Evidence of pathogenic variation in Sclerospora graminicola populations from pearl millet growing regions in Senegal [texte imprimé] / Ghislain KANFANY, Auteur ; Amadou Fofana, Auteur ; Pangirayi Tongoona, Auteur ; Agyemang Danquah, Auteur ; Samuel Offei, Auteur ; Eric Danquah, Auteur ; Ndiaga Cissé, Auteur ; Yedomon Ange Bovys Zoclanclounon, Auteur ; Cheikh Thiaw, Auteur . - Thi-s (Sénégal) : ISRA/CERAAS, 2017 . - 12 p.
Langues : Anglais (eng) Langues originales : Anglais (eng)
Catégories : SCIENCES ET PRODUCTIONS VEGETALES Mots-clés : Mil Index. décimale : F300-Génétique et amélioration des plantes Résumé : Downy mildew of pearl millet induced by Sclerospora graminicola is a major disease that causes significant yield losses in most pearl millet production areas worldwide. The pathogenic variability of S. graminicola populations from four agro-ecological zones in Senegal was assessed under field conditions. A set of 19 pearl millet lines, including 12 downy mildew-resistant differential lines with five improved cultivars and two local checks was evaluated during two consecutive rainy seasons (2015 and 2016) at Bambey, Nioro, Kolda and Sinthiou, representing the main pearl millet-growing zones of Senegal. Significant differences were observed among the tested lines, pathogen origin, year and their interactions for resistance to S. graminicola. Except for ICMR 356 and 7042 S, the downy mildew-resistant differential lines differed in their resistance to the pathogen from
the four agro-ecological zones over the years, providing evidence that the S. graminicola isolates represented different races of the pathogen. Among the locations where the experiments were established, the highest average of downy mildew incidence over the two years was recorded at Nioro (18.7 ± 2.6%), Kolda (17.6 ± 1.8%) and Bambey (12.1 ± 2.3%), while the mean downy mildew incidence was lowest at Sinthiou (6.9 ± 2.9%). This finding indicated that populations of pathogen from Kolda, Nioro and Bambey are more virulent compared to the one from Sinthiou.Exemplaires
Code-barres Cote Support Localisation Section Disponibilité CN1800025 F300-KAN Publication CNRA/Bambey Rayons Exclu du prêt Documents numériques
Cliquer pour le pdfURL Plant Genetic Resources. Identification of new sources of resistance for pearl millet downy mildew disease under field conditions / Ghislain KANFANY
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. Exemplaires
Code-barres Cote Support Localisation Section Disponibilité CN1800018 F303-KAN Article scientifique UNIVAL Rayons Exclu du prêt Documents numériques
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