QTL mapping of improving forage maize starch degradability in European elite maize germplasm

Leng, Pengfei; Ouzunova, Milena; Landbeck, Matthias; Wenzel, G.; Lübberstedt, Thomas; Darnhofer, Birte; Eder, J.

doi:10.1111/pbr.12699

Cited by 3 publications

(2 citation statements)

References 53 publications

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“…The results obtained showed that within all analyzed groups of inbreds, there was a quantitative variability of grain quality traits. Its main reason should be to recognize the effects of polygenic complexes, which cause an independent effect on these characters (Guttierrez-Rojas et al, 2010;Yang et al, 2010;Li et al, 2018;Leng et al, 2019) and can modify phenotypic manifestation of mutant genes O2 and SU2, as well as the effect of their non-allelic interaction.…”

Section: Discussionmentioning

confidence: 99%

Effects of Non-Allelic Interactions of O2 and SU2 Mutant Genes on Grain Biochemical Composition in Various Corn Inbreds

Tymchuk,

Sadovnychenko,

Tymchuk

et al. 2023

MAB

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The use of combinations of non-allelic mutant genes of the maize endosperm structure creates opportunities for improving the quality of corn grain in comparison not only with forms of the common type but also with monogenic endospermic mutants. In this study, the effect of a combination of mutant genes O2 (Opaque-2) and SU2 (Sugary-2) according to the biochemical composition of the grain was studied. For the research, a series of inbreds - carriers of a combination of mutant genes O2SU2, inbreds - carriers of monogenic mutations O2 and SU2, as well as maize inbreds of the common type of two-year reproduction were used. In the experiments, the content of protein, starch, and oil and the main characteristics of their quality were studied. It was found that the inbred carriers of the O2SU2 combination are superior to the inbred carriers of monogenic mutations O2 and SU2 in terms of complex biochemical characteristics. In comparison with mutants O2 they were distinguished by an increased content of protein (by 12.3% on average), amylose in starch (by 38.9% on average), starch digestibility (by 24.4% on average), oil content (by 18.4% on average) and oleate content in oil (by 29.9% on average). In comparison with the carriers of SU2 mutation, they had a higher content of lysine and tryptophan in the total grain protein (on average, by 19.4% & 14.3%, respectively). The main characteristics of grain quality in carriers of a combination of mutant genes O2SU2 were characterized by quantitative variability, which can modify the effect of non–allelic interaction of mutant genes O2 and SU2. The obtained results indicate the effectiveness of using non-allelic interactions between the O2 and SU2 mutant genes to improve the quality of corn grain.

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Section: Discussionmentioning

confidence: 99%

Effects of Non-Allelic Interactions of O2 and SU2 Mutant Genes on Grain Biochemical Composition in Various Corn Inbreds

Tymchuk,

Sadovnychenko,

Tymchuk

et al. 2023

MAB

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“…López-Malvar et al (2019) identified SNPs significantly associated with low stem hydroxycinnamate, which explained a low percentage of total phenotypic variability (7%-10%) but indirect selection based on cell wall kinases (WAKs) and members of the receptor-like cytoplasmic kinase (RLCK), acting as cell wall modulators, proved to be potential candidate genes for cell wall-bound hydroxycinnamate accumulation (Lopez-Malvar et al, 2019) (Table 2). Leng et al (2019) mapped seven (seedling fraction) to nine (vitreousness) QTLs for starch degradability traits in a DH population. These QTLs were distributed across all 10 chromosomes, except for chromosome 6, and explained phenotypic variance between 38.2% and 76.5%.…”

Section: Qtls and Genes Identified For Silage Traitsmentioning

confidence: 99%

Silage maize as a potent candidate for sustainable animal husbandry development—perspectives and strategies for genetic enhancement

et al. 2023

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Maize is recognized as the queen of cereals, with an ability to adapt to diverse agroecologies (from 58oN to 55oS latitude) and the highest genetic yield potential among cereals. Under contemporary conditions of global climate change, C4 maize crops offer resilience and sustainability to ensure food, nutritional security, and farmer livelihood. In the northwestern plains of India, maize is an important alternative to paddy for crop diversification in the wake of depleting water resources, reduced farm diversity, nutrient mining, and environmental pollution due to paddy straw burning. Owing to its quick growth, high biomass, good palatability, and absence of anti-nutritional components, maize is also one of the most nutritious non-legume green fodders. It is a high-energy, low-protein forage commonly used for dairy animals like cows and buffalos, often in combination with a complementary high-protein forage such as alfalfa. Maize is also preferred for silage over other fodders due to its softness, high starch content, and sufficient soluble sugars required for proper ensiling. With a rapid population increase in developing countries like China and India, there is an upsurge in meat consumption and, hence, the requirement for animal feed, which entails high usage of maize. The global maize silage market is projected to grow at a compound annual growth rate of 7.84% from 2021 to 2030. Factors such as increasing demand for sustainable and environment-friendly food sources coupled with rising health awareness are fueling this growth. With the dairy sector growing at about 4%–5% and the increasing shortage faced for fodder, demand for silage maize is expected to increase worldwide. The progress in improved mechanization for the provision of silage maize, reduced labor demand, lack of moisture-related marketing issues as associated with grain maize, early vacancy of farms for next crops, and easy and economical form of feed to sustain household dairy sector make maize silage a profitable venture. However, sustaining the profitability of this enterprise requires the development of hybrids specific for silage production. Little attention has yet been paid to breeding for a plant ideotype for silage with specific consideration of traits such as dry matter yield, nutrient yield, energy in organic matter, genetic architecture of cell wall components determining their digestibility, stalk standability, maturity span, and losses during ensiling. This review explores the available information on the underlying genetic mechanisms and gene/gene families impacting silage yield and quality. The trade-offs between yield and nutritive value in relation to crop duration are also discussed. Based on available genetic information on inheritance and molecular aspects, breeding strategies are proposed to develop maize ideotypes for silage for the development of sustainable animal husbandry.

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Enhancement of nutritional quality in maize grain through QTL-based approach

Kumar

Longmei

Choudhary

et al. 2023

CEREAL RESEARCH COMMUNICATIONS

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QTL mapping of improving forage maize starch degradability in European elite maize germplasm

Cited by 3 publications

References 53 publications

Effects of Non-Allelic Interactions of O2 and SU2 Mutant Genes on Grain Biochemical Composition in Various Corn Inbreds

Effects of Non-Allelic Interactions of O2 and SU2 Mutant Genes on Grain Biochemical Composition in Various Corn Inbreds

Silage maize as a potent candidate for sustainable animal husbandry development—perspectives and strategies for genetic enhancement

Enhancement of nutritional quality in maize grain through QTL-based approach

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