Detailed knowledge of the genetic diversity among maize (Zea mays L.) germplasm is useful for their systematic and efficient use in breeding programmes. Two multivariate techniques were used to characterize 77 landraces collected from southern Ghana and four Ghanaian improved varieties. The ...
Obeng-Antwi, K.
,
Craufurd, Peter Q.
,
Menkir, A.
,
Ellis, R.H.
,
Sallah, P.Y.K.
,
[Phenotypic diversity in maize landraces in Ghana]
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Phenotypic diversity in maize landraces in Ghana
Secondary traits can improve precision with which drought or low soil nitrogen (low-N) tolerant maize (Zea mays L.) genotypes are identified, compared to measuring only grain yield under each stress. The objective of this study was to identify secondary traits for indirect selection for yield imp...
Badu-Apraku, B.
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Akinwale, R.O.
,
Ajala, S.O.
,
Menkir, A.
,
Fakorede, M.A.B.
,
Oyekunle, M.
,
[Relationships among traits of tropical early maize cultivars in contrasting environments]
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Relationships among traits of tropical early maize cultivars in contrasting environments
Information about landrace diversity has practical implications for its preservation, efficient management and effective utilization in breeding programmes. The objectives of the study were to (i) compare molecular and agronomic diversity estimates of two divergent landraces (AA007/92 and AA098/9...
Obeng-Antwi, K.
,
Craufurd, Peter Q.
,
Menkir, A.
,
Ellis, R.H.
,
Sallah, P.Y.K.
,
[Intralandrace variability of two landraces in Ghana]
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Intralandrace variability of two landraces in Ghana
Aflatoxin contamination caused by the opportunistic pathogen A. flavus is a major concern in maize production prior to harvest and through storage. Previous studies have highlighted the constitutive production of proteins involved in maize kernel resistance against A. flavus’ infection. However, ...
Breeding for resistance to Striga can be done effectively under high and uniform artificial field infestation. To identify Striga tolerantresistant maize genotypes, it is essential to artificially inoculate every hill of maize in the breeding nursery with Striga seeds. The present method of inocu...
Ibikunle, O.A.
,
Menkir, A.
,
Kamara, A.Y.
,
Ajeigbe, Hakeem A.
,
Smith, M.A.
,
[Evaluation of artificial field infestation techniques with Striga Hermonthica for resistance screening in maize (Zea mays L.)]
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Evaluation of artificial field infestation techniques with Striga Hermonthica for resistance screening in maize (Zea mays L.)
Full-sib families derived from Pool 16 DT, a tropical maize ( Zea mays L.) population, were evaluated in the 1995/96 and 1997/98 dry seasons, using two sites each season in Côte d’Ivoire. In all sites, the crop was irrigated from planting to about 2 weeks before anthesis, irrigation was discontin...
Badu-Apraku, B.
,
Fakorede, M.A.B.
,
Menkir, A.
,
Kamara, A.
,
Dapaah, S.
,
[Screening maize for drought tolerance in the Guinea savanna of West and Central Africa]
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Screening maize for drought tolerance in the Guinea savanna of West and Central Africa
Vitamin A Deficiency (VAD) is a major public health problem in Sub-Saharan Africa affecting 33 million preschool-age children. Enrichment of maize varieties with provitamin A could provide sustainable and affordable solution to VAD. This study was conducted to understand the extent of GEI effects...
Mengesha Abera, W.
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Menkir, A.
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Meseka, S.
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Bossey, B.
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Afolabi, A.
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Burgueno, J.
,
Crossa, J.
,
[Factor analysis to investigate genotype and genotype X environment interaction effects on pro-vitamin A content and yield in maize synthetics]
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Factor analysis to investigate genotype and genotype X environment interaction effects on pro-vitamin A content and yield in maize synthetics
North Carolina Design I (NCD I) progenies derived from Pool 16 DT, a white, dent, early maturing, drought-tolerant and streak resistant tropical maize (Zea mays L.) population, were evaluated in the 1995/96 and 1997/98 dry seasons, using two sites each season in Côte d'Ivoire. In all sites, the c...
Badu-Apraku, B.
,
Fakorede, M.A.B.
,
Menkir, A.
,
Kamara, A.
,
Adam, A.
,
[Effects of droughtscreening methodology on genetic variances and covariances in Pool 16 DT maize population]
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Effects of droughtscreening methodology on genetic variances and covariances in Pool 16 DT maize population
Normalized difference vegetation index (NDVI) is a non-destructive measure of green vegetation growth or above ground biomass of a crop. NDVI may also be used to evaluate traits such as early vigour and stay green which are important for adaptation to drought stress. In the present study, the rel...
Adebayo, M.A.
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Menkir, A.
,
Hearne, S.
,
[Relationships between normalized difference vegetation index (NDVI) and other traits of tropical testcross maize (Zea mays L.) hybrids under drought and wellwatered conditions]
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Relationships between normalized difference vegetation index (NDVI) and other traits of tropical testcross maize (Zea mays L.) hybrids under drought and wellwatered conditions
Maize (Zea mays L.) production in west Africa (WA) is constrained by drought, Striga hermonthica infestation and low soil nitrogen (N). Maize varieties resistant to Striga, drought, and low N are ideal for WA, but genotype × environment interaction on these traits are usually significant due to d...
Badu-Apraku, B.
,
Menkir, A.
,
Ajala, S.
,
Akinwale, R.
,
Oyekunle, M.
,
Obeng-Antwi, K.
,
[Performance of tropical early maturing maize cultivars in multiple stress environments]
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Performance of tropical early maturing maize cultivars in multiple stress environments