Two improved tropical maize composites, TZL COMP3 and TZL COMP4; representing complementary heterotic pools have been subjected to four cycles of reciprocal recurrent selection (RRS) for two decades to enhance varietal cross performance. The objectives of this study were to evaluate the effect of...
Kolawole, A.O.
,
Menkir, A.
,
Blay, E.
,
Ofori, K.
,
Kling, J.G.
,
[Changes in heterosis of maize (Zea mays L.) varietal cross hybrids after four cycles of reciprocal recurrent selection]
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Changes in heterosis of maize (Zea mays L.) varietal cross hybrids after four cycles of reciprocal recurrent selection
The physical quality characteristics of test weight, 1000-kernel weight, percent floaters, Stenvert Hardness Index, kernel size (dimensions), water absorption index of grain and starch and chemical properties (protein, fat, ash, crude fiber, total sugars, starch, amylose, and amylopectin) were de...
Okoruwa, A.E.
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Kling, J.G.
,
Maziya-Dixon, B.B.
,
[Physical, chemical and water absorption properties of improved, openpollinated maize cultivars]
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Physical, chemical and water absorption properties of improved, openpollinated maize cultivars
The development of hybrids with enhanced expression of heterosis depends on the genetic background of the source population and the effectiveness of a breeding scheme used to identify and use divergent inbred lines with good combining ability. The present study was conducted to examine the potent...
Menkir, A.
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Kling, J.G.
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Anjorin, B.
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Ladejobi, F.
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Gedil, M.
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[Evaluating testcross performance and genetic divergence of lines derived from reciprocal tropical maize composites]
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Evaluating testcross performance and genetic divergence of lines derived from reciprocal tropical maize composites
Eighteen S1 lines of maize (Zea mays L.) derived from a low nitrogen tolerant pool and two inbred lines were evaluated for agronomic performance under moderate N conditions in the southern Guinea savannah of Nigeria. Generally, the breeding lines differed in yield, growth, vertical rootpulling re...
Kamara, A.Y.
,
Kling, J.G.
,
Menkir, A.
,
Ibikunle, O.
,
[Agronomic performance of maize (Zea mays L.) breeding lines derived from a low nitrogen maize population]
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Agronomic performance of maize (Zea mays L.) breeding lines derived from a low nitrogen maize population
Maize simulation models are proposed as tools for assessment of response to nitrogen (N) fertilizer and varieties in order to explore potential target zones for improved maize varieties. The CERES-maize model in the Decision Support System for Agrotechnology Transfer version 2.1 was tested using ...
Jagtap, S.S.
,
Abamu, F.J.
,
Kling, J.G.
,
[Longterm assessment of nitrogen and variety technologies on attainable maize yields in Nigeria using CERESmaize]
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Longterm assessment of nitrogen and variety technologies on attainable maize yields in Nigeria using CERESmaize
Maize is the most important cereal in sub-Saharan Africa. It is relatively inexpensive and provides many families with much-needed nutrients. For the farmers, it matures early and Is a source of ready income. Maize production Is being threatened by some diseases and pests, among which are downy m...
Kling, J.G.
,
Cardwell, K.F.
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Bosque Pérez, N.A.
,
Kim, S.K.
,
[Advances in screening methods and breeding for resistance to downy mildew and stem borers in maize]
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Advances in screening methods and breeding for resistance to downy mildew and stem borers in maize
Deficiencies of vitamin A, iron, and zinc are widespread in sub-Saharan Africa, where the diets are mainly plant-based and the intakes of animal products are low. The overall objective of this investigation was to determine the extent of genetic variation of these micronutrients in 16 yellow-seed...
Maziya-Dixon, B.B.
,
Kling, J.G.
,
Menkir, A.
,
Dixon, A.
,
[Genetic variation for total carotene, iron, and zinc contenet in maize genotypes and cassava clones]
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Genetic variation for total carotene, iron, and zinc contenet in maize genotypes and cassava clones
Maize (Zea mays) is a staple food crop in sub-Saharan Africa, but itsproduction is threatened byStriga hermonthica(Del.) Benth. Transferof resistance genes from wild relatives may increase resistance toS. hermonthicain tropical maize. The objective of this study was todetermine the combining abil...
Menkir, A.
,
Kling, J.G.
,
Badu-Apraku, B.
,
Ibikunle, O.
,
[Registration of 26 tropical maize germplasm lines with resistance to Striga hermonthica]
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Registration of 26 tropical maize germplasm lines with resistance to Striga hermonthica