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Sorghum is an important staple food crop in Kenya, but its yield is low due to many constraints which include diseases, drought, soil fertility, and pests, notably parasitic weed Striga hermonthica. Twenty elite sorghum genotypes and one resistant check were evaluated in three replications in a complete randomized design in Agar Gel (AG) experiment and randomized complete block design on selected Striga hotspot farms at Kadel and Nyahera in western Kenya. Significant differences (p<0.001) were realized both in the fields (plant height, dry shoot biomass yield, grain yield, field Striga count, and Striga damage ratings) and in the AG experiment with respect to maximum germination distance and numbers of induced germinated Striga seeds. Among the sorghum genotypes evaluated under field conditions, T53B, N57, N68, C26, IESV 92036-SH, T30B, and Uyoma 47 White genotypes had stable yields under Striga infestation in the two sites, whereas Nyadundo 1, Nyadundo 2, and Uyoma 8 were susceptible. In the AG experiment, E117B, T30B, Uyoma 8, Uyoma 42 STR, and T53B induced high numbers of germinated Striga seeds with maximum germination distances (MGD). In contrast, Uyoma 47 Brown, IESV 92038/2-SH, and IESV 92036-SH sorghum genotypes secreted low amounts of SLS suggesting resistance. This study has identified and selected four Striga tolerant (T53B, N68, N57, and T 30B) and resistant (C 26, Uyoma 47 Brown, IESV 92038/2-SH, and IESV 92036- SH) sorghum genotypes which can be utilized in further research programs or adopted to improve sorghum productivity in the highly Striga infested regions of western Kenya.
(Academic Journals, 2021)
Sorghum is an important staple food crop in Kenya, but its yield is low due to many constraints which
include diseases, drought, soil fertility, and pests, notably parasitic weed Striga hermonthica. Twenty
elite sorghum ...
Genetic association of agronomic traits with partial resistance to gray leaf spot in elite maize germplasm.
(John Wiley & Sons, 2022)
Studies on gray leaf spot (GLS) of maize have reported inconsistencies in the relationship between partial disease resistance and agronomic traits. Understanding this variation could facilitate the use of agronomic traits ...
Genome analyses reveal population structure and a purple stigma color gene candidate in finger millet
(Nature Publishing Group UK, 2023-06-21)
Finger millet is a key food security crop widely grown in eastern Africa, India and Nepal. Long considered a ‘poor man’s crop’, finger millet has regained attention over the past decade for its climate resilience and the ...
Non-host resistance to the finger millet blast pathogen Magnaporthe oryzae is modulated by a resistance response to PWL1 and PWL2 in Eragrostis curvula but not in related Chloridoid species
(2023-05-28)
Magnaporthe oryzae, a devastating pathogen of finger millet (Eleusine coracana), secretes effector molecules during infection to manipulate host immunity. This study determined the presence of avirulence effector genes ...
A high-density linkage map of finger millet provides QTL for blast resistance and other agronomic traits
(Wiley, 2021-12-13)
Finger millet [Eleusine coracana (L.) Gaertn.] is a critical subsistence crop in eastern Africa and southern Asia but has few genomic resources and modern breeding programs. To aid in the understanding of finger millet ...
Determining the Incidence and Severity of Maize Ear Rot Disease in Western Kenya
(Emerging Challenges in Agriculture and Food Science, 2022-09-28)
The purpose of this study is to determine the incidence and severity of the symptoms of ear rot in the four counties in Western Kenya. Maize ear rot disease is caused by a complex relationship involving the fungal pathogens; ...
Southwestern Kenya’s smallholder dairy farmers’ climate change perceptions, knowledge and adaptation
(African Journal of Agricultural Research, 2024-01)
Globally, climate change (CC) adaptation is critical as CC compounds smallholder dairy farmers’
challenges. Farmers’ CC perceptions and knowledge could influence their CC adaptations. This study
in Southwestern Kenya ...
Host specificity controlled by PWL1 and PWL2 effector genes in the finger millet blast pathogen Magnaporthe oryzae in eastern Africa
(Mol Plant Microbe Interact., 2023)
Magnaporthe oryzae, a devastating pathogen of finger millet
(Eleusine coracana), secretes effector molecules during infec
tion to manipulate host immunity. This study determined the
presence of avirulence effector ...
Post‐attachment resistance to Striga hermonthica in finger millet (Eleusine coracana)
(John Wiley & Sons, Ltd., 2023-11-21)
Finger millet is a highly nutritious and climate-resilient cereal crop. Despite its importance, finger millet productivity in East Africa trails other cereals due to several biotic and abiotic factors, including the parasitic ...
Combination of linkage and association mapping with genomic prediction to infer QTL regions associated with gray leaf spot and northern corn leaf blight resistance in tropical maize
(Frontiers, 2023-11-07)
Among the diseases threatening maize production in Africa are gray leaf spot (GLS) caused by Cercospora zeina and northern corn leaf blight (NCLB) caused by Exserohilum turcicum. The two pathogens, which have high genetic ...