Quality Protein Maize: Progress and Prospects

Atlin, G. N.; Palacios, Natalia; Babu, Raman; Das, Biswanath; Twumasi-Afriyie, S.; Friesen, Dennis; Groote, Hugo De; Vivek, B.; Pixley, K.V.

doi:10.1002/9780470880579.ch3

Cited by 63 publications

(54 citation statements)

References 70 publications

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“…This could be mainly due to the minimal dialogue between maize breeders and farmers [66] as the yield of QPM varieties is still predominantly below the production performance of the non-QPM varieties in some cases. A study of the factors affecting adoption of QPM technology in the northern zone of Tanzania showed that education of the household head, farmers' participation in demonstration trials, attendance to field days, and numbers of livestock owned positively influenced the rate of adoption of this technology [67].…”

Section: Adoption Of Qpm and Ways To Enhance Adoptionmentioning

confidence: 99%

Breeding for Quality Protein Maize (QPM) Varieties: A Review

et al. 2017

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Abstract:The nutritional evaluation of quality protein maize (QPM) in feeding trials has proved its nutritional superiority over non-QPM varieties for human and livestock consumption. The present paper reviews some of the most recent achievements in development of QPM varieties using both conventional and molecular breeding under stressed and non-stressed environments. It is evident that numerous QPM varieties have been developed and released around the world over the past few decades. While the review points out some gaps in information or research efforts, challenges associated with adoption QPM varieties are highlighted and suggestions to overcome them are presented. The adoption of released varieties and challenges facing QPM production at the farmer level are also mentioned. Several breeding methods have been conventionally used to develop QPM varieties in stressed (drought, low soil nitrogen, resistance to grey leaf spot, Turcicum leaf blight, ear rot, and Striga) and non-stressed environments. At least three genetic loci have been found to be implicated in controlling the levels of a protein synthesis factor correlated with lysine. They have been mapped on chromosomes 2, 4, and 7. While the use of molecular approaches will improve the efficiency and speed of variety development, the cost implications might limit the use of these technologies in the developing world. More emphasis should be given to breeding QPM for tolerance to environmental stresses, such as low soil pH, heat, and combined heat and drought stress. The post-harvest attack of QPM grains should also be considered. The adoption of QPM genotypes by farmers has been found to be limited mainly due to the minimal collaboration between maize breeders, farmers, agricultural extension workers, and other relevant stakeholders, as well as the need for isolating QPM varieties from normal maize. Therefore, there is need to use participatory plant breeding (PPB) and/or participatory variety selection (PVS) to enhance and improve the adoption of QPM varieties.

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Section: Adoption Of Qpm and Ways To Enhance Adoptionmentioning

confidence: 99%

Breeding for Quality Protein Maize (QPM) Varieties: A Review

et al. 2017

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“…• Some challenges for widespread adoption of QPM in developing countries have been described [118], which include lack of proitable markets for commercial producers and lack of government incentive to encourage adoption by subsidising the price of QPM seed.…”

Section: Future Challenges Of Maize Utilisation In Poultry Dietsmentioning

confidence: 99%

Assessment of Maize (Zea mays) as Feed Resource for Poultry

Dei¹

2017

Poultry Science

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Maize, also known as corn Zea mays L , has been recognised worldwide as a major energy feed ingredient in the diets of poultry. Its major nutritional limitation has been the low protein content and poor protein quality, which necessitates the use of expensive highprotein supplements or synthetic amino acids such as lysine in diets containing large proportion of maize. Therefore, extensive research has been conducted by maize breeders on the world maize germplasms collection with the aim of improving its nutritive value, particularly protein quality for monogastric animals. This chapter assesses the genetic upgrading of the nutritional quality of maize protein that culminated in the development of a new class of maize known as "Quality Protein Maize QPM ". Various studies on the nutritionally improved maize for poultry as well as future challenges confronting maize utilisation in poultry production are highlighted.

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“…Selective breeding has resulted into the development of a number of nutritionally enhanced advanced lines and hybrids such as quality protein maize (QPM) (Atlin et al 2011); mineral-dense (Fe and Zn) common bean, maize, pearl millet, rice, and wheat; b-carotene-rich sweet potato, cassava, maize, and rice, with a few of these already released for cultivation in some countries (see Section VI.E). To date, only few studies have been conducted to assess the bioavailability to humans of micronutrients from these enriched lines/hybrids.…”

Section: Efficacy Of Biofortified Crops On Human Healthmentioning

confidence: 99%