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.
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Ajala, S.O.
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Menkir, A.
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Fakorede, M.A.B.
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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
Maize production is constrained by Striga hermonthica in Mali leading to high yield losses. Breeding resistant hybrid maize is a promising alternative for increasing farmers’ income. The objective of this study was to evaluate the response of test crosses to Striga hermonthica and identify high y...
Sangaré, S.
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Menkir, A.
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Ofori, K.
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Gracen, V.
,
[Combining ability for grain yield, agronomic traits and striga hermonthica resistance of yellow endosperm maize]
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Combining ability for grain yield, agronomic traits and striga hermonthica resistance of yellow endosperm maize
Striga hermonthica is a serious threat to cereal production in the savannas of sub-Saharan Africa. Field trials were conducted in Nigeria at Abuja and Mokwa (southern Guinea savanna) in 2005 and 2006, and at Zaria (northern Guinea savanna) and Sabongari (Sudan savanna) in 2006, to evaluate the pe...
Chikoye, D.
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Fontem, L.A.
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Menkir, A.
,
[Seed coating herbicide tolerant maize hybrids with imazapyr for Striga hermonthica (Del.) Benth control in the West African savanna]
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Seed coating herbicide tolerant maize hybrids with imazapyr for Striga hermonthica (Del.) Benth control in the West African savanna
Striga hermonthica parasitism is a major constraint limiting Sorghum productivity in the Nigerian savanna. Field experiments were conducted in 2005 and 2006 rainy seasons to evaluate the response of sorghum varieties to striga infestation. A randomised complete block design was used to screen 12 ...
Dugje, I.Y.
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Ekeleme, F.
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Kamara, A.Y.
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Menkir, A.
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Chikoye, D.
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Omoigui, L.O.
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[Field evaluation of sorghum varieties to Striga hermonthica infestation in north eastern Nigerian savannas]
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Field evaluation of sorghum varieties to Striga hermonthica infestation in north eastern Nigerian savannas
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.
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Menkir, A.
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Kamara, A.Y.
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Ajeigbe, Hakeem A.
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Smith, M.A.
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[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.)
Striga hermonthica (Del.) Benth parasitizes maize (Zea mays L.) in sub-Saharan Africa, causing yield losses of up to 100% under severe infestation. Hybrid maize breeding for polygenic resistance to Striga has been undertaken at the International Institute of Tropical Agriculture (IITA) since the ...
Menkir, A.
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Meseka, S.
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[Genetic improvement in resistance to Striga in tropical maize hybrids]
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Genetic improvement in resistance to Striga in tropical maize hybrids
Marker-assisted recurrent selection (MARS) is a breeding method used to accumulate favorable alleles that for example confer tolerance to drought in inbred lines from several genomic regions within a single population. A bi-parental cross formed from two parents that combine resistance to Striga ...
Abdulmalik, R.O.
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Menkir, A.
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Meseka, S.K.
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Unachukwu, N.N.
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Ado, S.G.
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Olarewaju, J.D.
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Aba, D.A.
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Hearne, S.
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Crossa, J.
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Gedil, M.
,
[Genetic gains in grain yield of a maize population improved through marker assisted recurrent selection under stress and non-stress conditions in west Africa]
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Genetic gains in grain yield of a maize population improved through marker assisted recurrent selection under stress and non-stress conditions in west Africa
Striga hermonthica and drought are the major stresses limiting maize yields in sub-Saharan Africa. The search for diverse maize lines’ tolerance to drought and resistance to S. hermonthica (DTSTHR) is very crucial for yield improvement in areas affected by the two stresses. Understanding the gene...
Mengesha, W.
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Menkir, A.
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Unachukwu, N.N.
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Meseka, S.K.
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Farinola, A.
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Girma Tessema, G.
,
Gedil, M.
,
[Genetic diversity of tropical maize inbred lines combining resistance to Striga hermonthica with drought tolerance using SNP markers]
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Genetic diversity of tropical maize inbred lines combining resistance to Striga hermonthica with drought tolerance using SNP markers
Striga hermonthica (Del.) Benth. is a widespread parasitic weed that infl icts damage on maize (Zea mays L.) in sub-Saharan Africa. This is a highly variable root parasite that can contribute to signifi cant genotype × parasite population interaction observed in field trials. The present study wa...
Menkir, A.
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Makumbi, Dan
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Franco, J.
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[Assessment of reaction patterns of hybrids to Striga hermonthica (Del.) Benth. under artificial infestation in Kenya and Nigeria]
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Assessment of reaction patterns of hybrids to Striga hermonthica (Del.) Benth. under artificial infestation in Kenya and Nigeria
Striga hermonthica is a parasitic weed that poses a serious threat to the production of economically important cereals in sub-Saharan Africa. The existence of genetic diversity within and between S. hermonthica populations presents a challenge to the successful development and deployment of effec...
Unachukwu, N.N.
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Menkir, A.
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Rabbi, Ismail Y.
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Oluoch, M.
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Muranaka, S.
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Elzein, A.
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Odhiambo, G.
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Farombi, E.O.
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Gedil, M.
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[Genetic diversity and population structure of Striga hermonthica populations from Kenya and Nigeria]
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Genetic diversity and population structure of Striga hermonthica populations from Kenya and Nigeria