Le niebe est la deuxieme espece la plus cultivee au Niger apres le mil. Cette legumineuse est pre... more Le niebe est la deuxieme espece la plus cultivee au Niger apres le mil. Cette legumineuse est presente dans tous les pays saheliens ou elle est cultivee en culture pure ou, le plus souvent, en association avec les cereales (mil, sorgho). La diversification de la production, impulsee par les dynamiques locales d'integration agriculture-elevage et les dynamiques de marche du grain et des fourrage de niebe, renforcent le besoin de varietes adaptees localement et performantes pour une production a une fin double visant a la fois le grain et les fourrage (coques, fanes). Il existe une large diversite varietale du niebe en zone sahelienne, incluant des varietes traditionnelles et des varietes ameliorees. Nous avons caracterise la variabilite du rendement grains et du rendement fourrager d'une quarantaine de varietes de niebe, au sein d'un dispositif d'essai participatif avec les paysans, reparti sur 10 villages du Centre-sud et de l'Ouest du Niger (replication sur deux...
Balanites aegyptiaca contributes strongly to the resilience of Sahelian populations. All the orga... more Balanites aegyptiaca contributes strongly to the resilience of Sahelian populations. All the organs of B. aegyptiaca are used either for food, medicinal purposes or for other services. However, very few studies on the socioeconomic importance of B. aegyptiaca have been conducted in Niger. The main objective of this study was to valorize the knowledge of the populations on the uses of B. aegyptiaca in the Sudan-Sahelian agrosystems of Niger. The study was conducted in the Dosso region. The region was chosen based on its two main agro-climatic zones, characterized by the scarcity of the species in the south and its abundance in the north. A survey was carried out in February 2021 to assess the diversity of uses. The findings revealed that the uses of B. aegyptiaca products are very diversified and varied considerably accross agro-ecological zones. The types of use varied significantly among ethnic groups. The Hausa possessed 88.26% of the use, the Zarma 14.47%, the Peulh 2.63%, the So...
Asian Journal of Agricultural and Horticultural Research
Improving roselle yield and production, particularly in light of climate change and variability, ... more Improving roselle yield and production, particularly in light of climate change and variability, remains challenging and constantly urges for the modification of agro-techniques. One such modification that has proven successful in boosting yield of many vegetable crops in recent years is the adaptation of the apex cutting technique, especially in unfavorable agro-climatic circumstances where traditional methods are not plausible. This study was to assess the effect of cutting the main stem apical bud on roselle growth parameters and determine the optimal stage of apex cutting. The experiment was conducted in a split plot experimental device in randomized blocks with four (4) repetitions at Tara/Gaya and Tarna/Maradi. Two factors were studied, six (6) roselle ecotypes and four (4) levels of apex cuttings viz. C0 (uncunt plants as a control); C1 (20 days after sowing (DAS)); C2 (30 DAS); and C3 (40 DAS). The findings showed that apex cutting significantly affected all the morphologica...
Cette étude synthétise les principaux résultats sur la biologie de l'oignon, les ressources p... more Cette étude synthétise les principaux résultats sur la biologie de l'oignon, les ressources phytogénétiques, la position taxonomique ainsi que les marqueurs morphologiques, biochimiques et moléculaires pour l'analyse de la diversité génétique de l'oignon, avec une attention particulière pour l'Afrique. Plante monocotylédone, allogame, entomophile, avec une cycle cultural annuel pour la production des bulbes, bisannuel pour celles des graines, l'oignon est l'un des légumes les plus importants au monde en raison de son utilisation en alimentation et en médecine.This study explores important information on biology, genetic resources, taxonomy, as well as morphological, biochemical and molecular markers in order to provide a better understanding of the genetic diversity of the onion (Allium cepa L.). The study has a particular focus on the plant as grown in Africa. The onion is a monocotyledonous, allogamous, and entomophilous plant, with a one-year production cy...
Asian Journal of Biochemistry, Genetics and Molecular Biology
Roselle (Hibiscus sabdariffa L.) plays a critical socioeconomic role in Sahelian populations (Nig... more Roselle (Hibiscus sabdariffa L.) plays a critical socioeconomic role in Sahelian populations (Niger, Burkina, Mali, Senegal...). During the 2017 rainy season, a field experiment was carried out in Tara/Gaya and Tarna/Maradi to study the effect of apex cutting on Roselle production. The experiment used a split-plot in randomized blocks of four (4) replications with ecotypes as the main plot factor and apex cuts as subplots. Three (3) levels of apex cut were used viz. C1 (20 days after sowing), C2 (30 days after sowing), and C3 (40 days after sowing). The results revealed that apex cutting increased leaf, calyx, and seed yields significantly (P<0.001) in both study sites. This increase in yield (leaf, calyx, and seed) was roughly 15% and 10% in Tarna and Tara, respectively. The most beneficial cutting stage was between 20 and 30 days after sowing (DAS). This study, however, should be expanded to more agroclimatic zones to further assess the effect of apex cutting on Roselle product...
Climate change is affecting crop production in the West Africa Sahel. Farmers develop many adapta... more Climate change is affecting crop production in the West Africa Sahel. Farmers develop many adaptation strategies However, few of them have been tested to find their climate smartness, primarily their agronomic and economic benefits. Therefore, this study aimed to evaluate the field experiment in two successive years, 2020 and 2021, in rainy conditions, the combined effect of millet/cowpea intercropping and fertilizer microdosing on the yield and their economic advantages. Two genotypes of cowpea (ISV128 and Tiligré) and a variety of millet, Heini Kirey Précoce (HKP), were intercropped. At the treatment level, there is a net benefit of the crop association compared to the pure cultivation of each of the millet and cowpea species with total LERs, an average of 1.48 in 2020, and 1.43 in 2021 for microdose treatment and 1.55 in 2020 and 1.13 in 2021 for the control. However, there is no significant difference in cowpea genotype on LER and millet yields in the 2 years (P = 0.65 in 2020 a...
Background Breeding for new maize varieties with propitious root systems has tremendous potential... more Background Breeding for new maize varieties with propitious root systems has tremendous potential in improving water and nutrients use efficiency and plant adaptation under suboptimal conditions. To date, most of the previously detected root-related trait genes in maize were new without functional verification. In this study, seven seedling root architectural traits were examined at three developmental stages in a recombinant inbred line population (RIL) of 179 RILs and a genome-wide association study (GWAS) panel of 80 elite inbred maize lines through quantitative trait loci (QTL) mapping and genome-wide association study. Results Using inclusive composite interval mapping, 8 QTLs accounting for 6.44–8.83 % of the phenotypic variation in root traits, were detected on chromosomes 1 (qRDWv3-1-1 and qRDW/SDWv3-1-1), 2 (qRBNv1-2-1), 4 (qSUAv1-4-1, qSUAv2-4-1, and qROVv2-4-1), and 10 (qTRLv1-10-1, qRBNv1-10-1). GWAS analysis involved three models (EMMAX, FarmCPU, and MLM) for a set of 1...
Additional file 1: Table S1. Phenotypic data of the seven root-related traits from the mapping po... more Additional file 1: Table S1. Phenotypic data of the seven root-related traits from the mapping population at V1, V2 and V3 stages.
Additional file 2: Table S2. Phenotypic data of the seven root-related traits from the GWAS panel... more Additional file 2: Table S2. Phenotypic data of the seven root-related traits from the GWAS panel at V1, V2 and V3 stages.
Le niebe est la deuxieme espece la plus cultivee au Niger apres le mil. Cette legumineuse est pre... more Le niebe est la deuxieme espece la plus cultivee au Niger apres le mil. Cette legumineuse est presente dans tous les pays saheliens ou elle est cultivee en culture pure ou, le plus souvent, en association avec les cereales (mil, sorgho). La diversification de la production, impulsee par les dynamiques locales d'integration agriculture-elevage et les dynamiques de marche du grain et des fourrage de niebe, renforcent le besoin de varietes adaptees localement et performantes pour une production a une fin double visant a la fois le grain et les fourrage (coques, fanes). Il existe une large diversite varietale du niebe en zone sahelienne, incluant des varietes traditionnelles et des varietes ameliorees. Nous avons caracterise la variabilite du rendement grains et du rendement fourrager d'une quarantaine de varietes de niebe, au sein d'un dispositif d'essai participatif avec les paysans, reparti sur 10 villages du Centre-sud et de l'Ouest du Niger (replication sur deux...
Balanites aegyptiaca contributes strongly to the resilience of Sahelian populations. All the orga... more Balanites aegyptiaca contributes strongly to the resilience of Sahelian populations. All the organs of B. aegyptiaca are used either for food, medicinal purposes or for other services. However, very few studies on the socioeconomic importance of B. aegyptiaca have been conducted in Niger. The main objective of this study was to valorize the knowledge of the populations on the uses of B. aegyptiaca in the Sudan-Sahelian agrosystems of Niger. The study was conducted in the Dosso region. The region was chosen based on its two main agro-climatic zones, characterized by the scarcity of the species in the south and its abundance in the north. A survey was carried out in February 2021 to assess the diversity of uses. The findings revealed that the uses of B. aegyptiaca products are very diversified and varied considerably accross agro-ecological zones. The types of use varied significantly among ethnic groups. The Hausa possessed 88.26% of the use, the Zarma 14.47%, the Peulh 2.63%, the So...
Asian Journal of Agricultural and Horticultural Research
Improving roselle yield and production, particularly in light of climate change and variability, ... more Improving roselle yield and production, particularly in light of climate change and variability, remains challenging and constantly urges for the modification of agro-techniques. One such modification that has proven successful in boosting yield of many vegetable crops in recent years is the adaptation of the apex cutting technique, especially in unfavorable agro-climatic circumstances where traditional methods are not plausible. This study was to assess the effect of cutting the main stem apical bud on roselle growth parameters and determine the optimal stage of apex cutting. The experiment was conducted in a split plot experimental device in randomized blocks with four (4) repetitions at Tara/Gaya and Tarna/Maradi. Two factors were studied, six (6) roselle ecotypes and four (4) levels of apex cuttings viz. C0 (uncunt plants as a control); C1 (20 days after sowing (DAS)); C2 (30 DAS); and C3 (40 DAS). The findings showed that apex cutting significantly affected all the morphologica...
Cette étude synthétise les principaux résultats sur la biologie de l'oignon, les ressources p... more Cette étude synthétise les principaux résultats sur la biologie de l'oignon, les ressources phytogénétiques, la position taxonomique ainsi que les marqueurs morphologiques, biochimiques et moléculaires pour l'analyse de la diversité génétique de l'oignon, avec une attention particulière pour l'Afrique. Plante monocotylédone, allogame, entomophile, avec une cycle cultural annuel pour la production des bulbes, bisannuel pour celles des graines, l'oignon est l'un des légumes les plus importants au monde en raison de son utilisation en alimentation et en médecine.This study explores important information on biology, genetic resources, taxonomy, as well as morphological, biochemical and molecular markers in order to provide a better understanding of the genetic diversity of the onion (Allium cepa L.). The study has a particular focus on the plant as grown in Africa. The onion is a monocotyledonous, allogamous, and entomophilous plant, with a one-year production cy...
Asian Journal of Biochemistry, Genetics and Molecular Biology
Roselle (Hibiscus sabdariffa L.) plays a critical socioeconomic role in Sahelian populations (Nig... more Roselle (Hibiscus sabdariffa L.) plays a critical socioeconomic role in Sahelian populations (Niger, Burkina, Mali, Senegal...). During the 2017 rainy season, a field experiment was carried out in Tara/Gaya and Tarna/Maradi to study the effect of apex cutting on Roselle production. The experiment used a split-plot in randomized blocks of four (4) replications with ecotypes as the main plot factor and apex cuts as subplots. Three (3) levels of apex cut were used viz. C1 (20 days after sowing), C2 (30 days after sowing), and C3 (40 days after sowing). The results revealed that apex cutting increased leaf, calyx, and seed yields significantly (P<0.001) in both study sites. This increase in yield (leaf, calyx, and seed) was roughly 15% and 10% in Tarna and Tara, respectively. The most beneficial cutting stage was between 20 and 30 days after sowing (DAS). This study, however, should be expanded to more agroclimatic zones to further assess the effect of apex cutting on Roselle product...
Climate change is affecting crop production in the West Africa Sahel. Farmers develop many adapta... more Climate change is affecting crop production in the West Africa Sahel. Farmers develop many adaptation strategies However, few of them have been tested to find their climate smartness, primarily their agronomic and economic benefits. Therefore, this study aimed to evaluate the field experiment in two successive years, 2020 and 2021, in rainy conditions, the combined effect of millet/cowpea intercropping and fertilizer microdosing on the yield and their economic advantages. Two genotypes of cowpea (ISV128 and Tiligré) and a variety of millet, Heini Kirey Précoce (HKP), were intercropped. At the treatment level, there is a net benefit of the crop association compared to the pure cultivation of each of the millet and cowpea species with total LERs, an average of 1.48 in 2020, and 1.43 in 2021 for microdose treatment and 1.55 in 2020 and 1.13 in 2021 for the control. However, there is no significant difference in cowpea genotype on LER and millet yields in the 2 years (P = 0.65 in 2020 a...
Background Breeding for new maize varieties with propitious root systems has tremendous potential... more Background Breeding for new maize varieties with propitious root systems has tremendous potential in improving water and nutrients use efficiency and plant adaptation under suboptimal conditions. To date, most of the previously detected root-related trait genes in maize were new without functional verification. In this study, seven seedling root architectural traits were examined at three developmental stages in a recombinant inbred line population (RIL) of 179 RILs and a genome-wide association study (GWAS) panel of 80 elite inbred maize lines through quantitative trait loci (QTL) mapping and genome-wide association study. Results Using inclusive composite interval mapping, 8 QTLs accounting for 6.44–8.83 % of the phenotypic variation in root traits, were detected on chromosomes 1 (qRDWv3-1-1 and qRDW/SDWv3-1-1), 2 (qRBNv1-2-1), 4 (qSUAv1-4-1, qSUAv2-4-1, and qROVv2-4-1), and 10 (qTRLv1-10-1, qRBNv1-10-1). GWAS analysis involved three models (EMMAX, FarmCPU, and MLM) for a set of 1...
Additional file 1: Table S1. Phenotypic data of the seven root-related traits from the mapping po... more Additional file 1: Table S1. Phenotypic data of the seven root-related traits from the mapping population at V1, V2 and V3 stages.
Additional file 2: Table S2. Phenotypic data of the seven root-related traits from the GWAS panel... more Additional file 2: Table S2. Phenotypic data of the seven root-related traits from the GWAS panel at V1, V2 and V3 stages.
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