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Characterization of phenotypic Diversity of sorghum collection for developing breedin material [texte imprimé] / Talla Gueye, Auteur ; Bassirou Sine, Auteur ; Nd. Cissé, Auteur ; Cyril Diatta, Auteur ; Saliou Ndiaye, Auteur . - 2016 . - 48p : tabl., graph. Langues : Anglais ( eng) Langues originales : Anglais ( eng)
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CN1600004 | F300-GUE | Publication | CERAAS/Thiès | Rayons | Exclu du prêt |
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Agriculture and Food Sciences Research, Vol. 6, No. 1. Evaluation of Extra-early Maturing Maize Genotypes for Grain Yield and Stability in the Groundnut Basin Agro-ecological Zone of Senegal [texte imprimé] / Georgina Lala Ehemba, Auteur ; Yedomon Ange Bovys Zoclanclounon, Auteur ; Moustapha Guèye, Auteur ; Cyril Diatta, Auteur ; Martial Barnabe Etienne Diatta, Auteur ; Cheikh Thiaw, Auteur ; Alfred Kouly Tine, Auteur ; Alpha Bocar Baldé, Auteur ; Ghislain KANFANY, Auteur . - [s.d.] . - pp. 79-84. Langues : Anglais ( eng) Catégories : | SCIENCES ET PRODUCTIONS VEGETALES
| Mots-clés : | Maïs, amélioration génétique, génotype, essai, Paoskoto, Ndiedieng, Nioro, Keur Sene, maïs extra-précoce, analyse de variance | Index. décimale : | F028-Génétique et amélioration des plantes | Résumé : | Maize is a highly valuable staple food crop in Sub-Saharan Africa regions. Its production is hampered by both biotic and abiotic stress. Early-maturing genetic resources appear as an excellent choice to manage adverse climatic change’s effects. This study aimed to find the best extra-early maize genotypes based on genotype by environment interactions in the groundnut agro-ecological zone of Senegal. The trials were conducted in Paoskoto, Ndiedieng, Nioro and Keur Sene during the rainy seasons of 2016 and 2017. Six extra-early maize genotypes were evaluated following a randomized complete block design with three replications. Data on grain yield were recorded and analysed using additive main effect and multiplicative interaction and genotype plus genotype by environment biplot methods. Analysis of variance revealed a significant (P < 0.01) genotype by environment effect on grain yield. The sum of squares variation was higher (77.2%) explained by the environment effect. The genotype 2008-TZEE-W-STR showed the highest yield performance (3299 kg ha-1) and lowest yield stability index (3). This genotype can be suggested to farmers for its cultivation and a good candidate for early maturing maize breeding program in Senegal. | En ligne : | http://www.asianonlinejournals.com/index.php/AESR/article/view/122/110 |
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Crop Protection, N°119. Development of sorghum hybrids for stable yield and resistance to grain mold for the Center and South-East of Senegal [texte imprimé] / Cyril Diatta, Auteur ; Thierry Klanvi Tovignan, Auteur ; Hubert Adoukounou-Sagbadja, Auteur . - [S.l.] : Elsevier Ltd, 2019 . - pp.197-207 : tabl., graph., fig. ISSN : ISSN: 0261-2194 https://doi.org/10.1016/j.cropro.2019.02.001
Langues : Anglais ( eng) Catégories : | SCIENCES ET PRODUCTIONS VEGETALES
| Mots-clés : | Sorghum hybrids
Grain yield
Mold tolerance
GxE interactions
GGE biplot | Index. décimale : | F313- Variation des caractères: Genotype , phenotype, caractère physiologique, vigueur, adaptation | Résumé : | Panicle mold infestation is reported to cause 30–100% yield loss in sorghum. Therefore, breeding for mold
resistance becomes a necessity. Due to difficulties in predicting genotype by environment interactions (GxE),
multi-location tests are required in the breeding process to identify high-yielding and stable genotypes across
environments. The present study aimed at assessing the performance and stability for yield and resistance to
grain mold of five local sorghum hybrids evaluated over five years across four locations in the Center and South-
East regions of Senegal. The combined ANOVA showed a strong effect of year, genotype and location on the days
to anthesis, plant height, grain yield components and panicle grain mold rating score. The GxE interaction was
significant for grain yield but not for panicle mold infestation. Year x location explained 25% of total variation of
grain yield while year and location explained 22% and 19% respectively. With regard to panicle grain mold
infestation, year explained 32% of total variation followed by year by location (29%), genotype (7%) and
location (6%). Although year and location better explained the variation for the traits, broad-sense heritability
was high, indicating a possibility to improve these traits through selection. For most of the traits, the hybrids had
higher performance compared to the parental lines used as check, showing an expression of heterosis. The GGE
biplot approach was used to identity hybrids with high performance and stability. Hence, hybrid G4 followed by
G2 and G3, were the best in terms of yield performance and stability. Moreover, location STM15 followed by
DAR15 were the best closest to an ideal location. Overall, G5 was pointed out as the best hybrid combining grain
yield and mold tolerance across years and locations. These results in addition to providing details on the performance
and stability of the five sorghum hybrids helped to identify the best hybrids to be released and
disseminated in the Center and South-East regions of Senegal. |
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Crop Protection, vol. 119. Development of sorghum hybrids for stable yield and resistance to grain mold for the Center and South-East of Senegal [texte imprimé] / Cyril Diatta, Auteur . - [S.l.] : Elsevier Ltd, 2019 . - pp.197-207 : tabl., graph. ISSN : ISSN / 0261-2194 Langues : Anglais ( eng) Mots-clés : | Sorgho hybride, Rendement en Grain, Tolérance à la Moisissure, Interactions GxE
GGE biplot | Résumé : | A B S T R A C T
Panicle mold infestation is reported to cause 30–100% yield loss in sorghum. Therefore, breeding for mold
resistance becomes a necessity. Due to difficulties in predicting genotype by environment interactions (GxE),
multi-location tests are required in the breeding process to identify high-yielding and stable genotypes across
environments. The present study aimed at assessing the performance and stability for yield and resistance to
grain mold of five local sorghum hybrids evaluated over five years across four locations in the Center and South-
East regions of Senegal. The combined ANOVA showed a strong effect of year, genotype and location on the days
to anthesis, plant height, grain yield components and panicle grain mold rating score. The GxE interaction was
significant for grain yield but not for panicle mold infestation. Year x location explained 25% of total variation of
grain yield while year and location explained 22% and 19% respectively. With regard to panicle grain mold
infestation, year explained 32% of total variation followed by year by location (29%), genotype (7%) and
location (6%). Although year and location better explained the variation for the traits, broad-sense heritability
was high, indicating a possibility to improve these traits through selection. For most of the traits, the hybrids had
higher performance compared to the parental lines used as check, showing an expression of heterosis. The GGE
biplot approach was used to identity hybrids with high performance and stability. Hence, hybrid G4 followed by
G2 and G3, were the best in terms of yield performance and stability. Moreover, location STM15 followed by
DAR15 were the best closest to an ideal location. Overall, G5 was pointed out as the best hybrid combining grain
yield and mold tolerance across years and locations. These results in addition to providing details on the performance
and stability of the five sorghum hybrids helped to identify the best hybrids to be released and
disseminated in the Center and South-East regions of Senegal. | En ligne : | https://doi.org/10.1016/j.cropro.2019.02.001 |
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/ Diarietou Sambakhé
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