Development of Extra-Early Provitamin A Quality Protein Maize Inbreds with Resistance/Tolerance to Striga hermonthica and Soil Nitrogen Stress

Oyekale, Solomon A.; Badu‐Apraku, B.; Adetimirin, Victor O.; Unachukwu, Nnanna; Gedil, Melaku

doi:10.3390/agronomy11050891

Cited by 4 publications

(6 citation statements)

References 45 publications

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“…These results are similar with the findings of Konaté et al (2017) who reported the lack of significant G×E for Striga damage ratings at 8 and 10 WAP. In previous studies significant G×E have reported for Striga damage ratings at 8 and 10 WAP and grain yield related traits (Makumbi et al,2015;Kanampiu et al,2018;Oyekale et al,2021). The difference in the results of this study and those of the previous authors suggests that the environments where the genotypes have been evaluated, and their genetic background might be different.…”

Section: Discussioncontrasting

confidence: 85%

Agronomic Performance Of S1 Maize Lines Derived From A Bi-Parental Cross Under Infested And Striga Free Environments

Yacoubou

Wallis

Salami

et al. 2021

ESJ

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Striga hermonthica, causes up to 100% yield loss in maize production in sub-Saharan Africa. Developing Striga resistant maize cultivars could be a major component of integrated Striga management strategies. This study aims at assessing the agronomic performance of S1 breeding lines in improving maize for Striga resistance. Two hundred S1 lines have been evaluated under artificial infestation Striga and Striga-free conditions in Benin for two years during 2018 and 2019 growing seasons using alpha-lattice design (51 x 4) with two replicates. Twelve agro-morphological and Striga adaptive traits have been assessed. The tested lines have displayed high genetic variability for most agronomic and Striga adaptive traits. The S1 lines exhibited high grain yield than their parents with averages of 2,552.72±593 kg ha-1 and 2,965.67±635.86 kg ha-1 under Striga artificial infestation and Striga-free conditions, respectively. Grain yield has displayed high positive and significant genetic and phenotypic correlations with ears per plant and high negative correlations with days to 50% silking, ears aspect, and Striga damage rating at 8 and 10 weeks after planting (WAP). Useful traits like ears per plant, days to 50% silking, ears aspect, number of emerged Striga plants and Striga rating at 10 WAP could assist for indirect selection under Striga conditions. Based on the selection index, a total of 15 S1 lines have been identified as top ranking and can be used as sources of resistance or tolerance genes to Striga and further improvement in maize breeding in future.

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Section: Discussioncontrasting

confidence: 85%

Agronomic Performance Of S1 Maize Lines Derived From A Bi-Parental Cross Under Infested And Striga Free Environments

Yacoubou

Wallis

Salami

et al. 2021

ESJ

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“…There is consistently strong evidence ( 34 ) that strategically increasing plant diversity increases crop and forage yield, wood production, yield stability, pollinators, weed suppression, and pest suppression. An example of successful application of crop genetic diversity to enhance yield stability in a tropical context is seen in Nigeria where the recent development of super-sweet maize hybrids ( 35 ) as well as provitamin A quality protein maize ( 36 ) have potential to diversify the maize value chain. This chain was previously dominated by flint and dent endosperm types and this offers some diversity in nutrition and business opportunities.…”

Section: Transforming Urban Food Systems Through Sustainable One Heal...mentioning

confidence: 99%

Nature-Based One Health Approaches to Urban Agriculture Can Deliver Food and Nutrition Security

et al. 2022

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The increasing global human population is projected to reach 9.7 billion people by 2050. This population growth is currently linked to the trends of world-wide urbanization, growth of megacities and shifting dietary patterns. While humankind faces the daunting challenge of feeding and providing healthy lives for its teeming populations, urban agriculture holds promise for improving the quality of life in cities. Fortunately, policymakers and planners are accepting the need to support peri-urban farmers to increase the resilience of food systems while efficiently managing already strained natural resources. We argue that for urban agriculture to significantly increase food yields, it is crucial to adopt a One Health approach to agriculture and environmental stewardship. Here, we propose six nature-based and climate-smart approaches to accelerate the transition toward more sustainable food systems. These approaches include reducing the reliance on synthetic agricultural inputs, increasing biodiversity through producing locally adapted crops and livestock breeds, using probiotics and postbiotics, and adopting portable digital decision-support systems. Such radical approaches to transforming food production will require cross-sectoral stakeholder engagement at international, national, and community levels to protect biodiversity and the environment whilst ensuring sustainable and nutritious diets that are culturally acceptable, accessible, and affordable for all.

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“…The majority of resource-poor families in sub-Saharan Africa (SSA) consume conventional maize that were deficient in major nutrients such as provitamin A (PVA) carotenoids and amino acids (lysine and tryptophan) (Oyekale et al 2021). Such diets are fed to infants (from 2-3 months old) and babies of preschool age without nutritional supplements in several developing countries (Badu-Apraku et al 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Tryptophan and lysine amino acids are major protein building blocks needed by monogastric animals and humans (Oyekale et al 2021). A deficiency of tryptophan resulted in increased pain sensitivity, impaired bone development, a decline in growth rate, lessened food intake, increased aggression, and nervousness (Moehn et al 2012).…”

Section: Introductionmentioning

confidence: 99%

“…It also has a biological value of nearly 80% (the magnitude of human protein assimilation) compared to 40-58% conventional maize (Mbuya et al 2010). Maize biofortification with enhanced levels of PVA and QPM is the most favourable approach for combating malnourishment and health challenges such as kwashiorkor, ocular impairment, underweight, and diseases vulnerability (Oyekale et al 2021;Oluwaseun et al 2022).…”

Section: Introductionmentioning

confidence: 99%

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Genetics of Testcrossed Streak Virus Resistance Carotene Quality Protein Maize

Ige,

Bello,

Mahamood

et al. 2023

Plant Breed. Biotech.

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Development of Provitamin A quality protein maize (PVA-QPM) conferring resistance to maize streak virus (MSV) would reduce the prevalence of the disease, alleviate malnutrition and increase food security in sub-Saharan Africa. This study was conducted to (i) evaluate early maturing PVA-QPM inbreds and their derived testcross hybrids for grain yield, MSV-resistant, carotenoids, and tryptophan contents, (ii) estimate the combining ability of the MSV-resistant PVA-QPM testcrosses for all traits. Five improved open-pollinated MSV resistance cultivars and five early maturing PVA-QPM inbreds were crossed in a half-diallel fashion without reciprocals. The derived forty-five F1 topcrosses, ten parental materials, and two commercial hybrids that served as controls were tested at the Lower Niger River Basin Development Authority in Oke-Oyi, Nigeria, during rain-fed of the year 2019 and 2020. The PVA-QPM inbreds from TZEIORQ 13, TZEIORQ 29, and TZEQI 82 that were crossed with MSV resistance AK-9528-DMRSR and Pop 28 SR appeared potentially useful combinations for enhancing grain yield, MSV-resistant, carotenoids, and tryptophan contents, Testcrossed TZEQI 82 × AK-9528-DMRSR POP 28 SR, TZEQI 82 × ACR. 91 SUWAN-1-SR C1 and TZEQI 82 × IK.91 TZL COMP 3-Y C1 were most outstanding for all measured grain yield and nutrient contents. Additive genetic effects were preponderant over non-additive genetic effects under artificial infection of MSV disease. These three promising MSV resistance PVA-QPM hybrids should be evaluated under on-farm multiplication trials for stability performance and adaptation to reduce malnourishment and food self-sufficiency in SSA. Also, further researches on genomic analyses of the superior testcrosses are desirable.

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Development of Extra-Early Provitamin A Quality Protein Maize Inbreds with Resistance/Tolerance to Striga hermonthica and Soil Nitrogen Stress

Cited by 4 publications

References 45 publications

Agronomic Performance Of S1 Maize Lines Derived From A Bi-Parental Cross Under Infested And Striga Free Environments

Agronomic Performance Of S1 Maize Lines Derived From A Bi-Parental Cross Under Infested And Striga Free Environments

Nature-Based One Health Approaches to Urban Agriculture Can Deliver Food and Nutrition Security

Genetics of Testcrossed Streak Virus Resistance Carotene Quality Protein Maize

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