Genetic gain for agronomic, physiological, and biochemical traits and quality attributes in bread wheat (Triticum aestivum L.): a meta-analysis

Thungo, Zamalotswa; Shimelis, Hussein; Odindo, Alfred; Mashilo, Jacob

doi:10.1007/s10681-021-02846-4

Cited by 6 publications

(3 citation statements)

References 156 publications

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“…Analyzing such data can lead to the optimization of breeding techniques. Meta-analysis can provide information on the effectiveness of different breeding strategies, such as selection, crossing, or genetic engineering [103,104]. Breeders can use these findings to develop optimal breeding strategies that lead to desired traits in plants.…”

Section: Discussionmentioning

confidence: 99%

Meta-Analysis of Influence of Diversity of Parental Forms on Heterosis and Specific Combining Ability of Their Hybrids

2023

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An important stage in any breeding activity is selection of suitable individuals for further breeding. Thus, the main goal of breeders becomes such a selection of parental forms that leads to the consolidation and maximization of the value of traits of significant utility and economic importance. Heterosis and specific combining ability are very important parameters in plant and animal breeding. The ability to predict their value and relevance could significantly shorten the breeding process. One way to predict the effects of heterosis and specific combining ability is to select parental forms for crosses. This selection can be made on the basis of variation in parental forms. An analysis was made of publicly available data that contain information about the effects of heterosis, the effects of specific combining ability, and phenotypic and genetic diversity of parental forms. Preliminary studies show that the best approach for obtaining favorable hybrids would be selection of parental forms that are very genetically diverse while being phenotypically equal.

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Section: Discussionmentioning

confidence: 99%

Meta-Analysis of Influence of Diversity of Parental Forms on Heterosis and Specific Combining Ability of Their Hybrids

2023

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“…However, Brazil has a high potential for expanding the cultivation of wheat, especially into regions of lower latitude, such as the Brazilian Cerrado (Casagrande et (3.14% year − 1 ), while in tropical, hot and dry regions the genetic gain was considerably lower: 61.59 kg ha − 1 year − 1 (1.68% year − 1 ). The lower performance in the Cerrado region can be explained by the presence of acidic soils with toxic aluminum (Boff et al 2019), lower water availability (Pereira et al 2019), high incidence of rice blast fungus (Goddard et al 2020), and high temperatures that result in heat stress (Mezzomo et al 2021b;Thungo et al 2021). However, wheat production in this region has some economic advantages, such as greater proximity to the largest wheat consuming center in Brazil (the Southeast region), cultivation in the off-season, low relative humidity and low incidence of fungal diseases common to producing areas in the South region, which together lead to a high production potential and make it an alternative to produce high-tech wheat for the bakery industry (Pasinato et al 2018;Oliveira et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Envirotypes applied to evaluate the adaptability and stability of wheat genotypes in the tropical region in Brazil

Casagrande,

Mezzomo,

de Sousa

et al. 2024

Euphytica

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Global climate changes can dramatically impact wheat production in Brazil's Cerrado biome, considered a new wheat farming frontier. Therefore, new approaches are needed to better understand the G×E interaction in environments with high climate variations. Here, we integrate envirotyping, adaptability, and stability techniques to better understand the G×E interaction and provide new insights for the recommendation of tropical wheat genotypes that can perform well in hotter and drier environments. Thirty-six wheat genotypes were evaluated for grain yield in eight eld trials in 2018, 2019, and 2020 in the Brazilian Cerrado region. There is strong evidence that even in irrigated conditions, temperatures > 30 ºC during the booting and heading/ owering stages dramatically reduce the grain yield. Two lines, VI14774 (GY = 3800 kg ha -1 ), and VI14980 (GY = 4093 kg ha -1 ) had better performance in the hotter environment (~ 22% and ~ 32% higher than the grand mean) and are potential germplasm sources for warmer environments at the boosting and heading/ owering stages. Overall, this study provides new insights on how the environment typing can be useful to better understand the genotype-byenvironment interaction and help to breed new climate-resilient wheat cultivars for the cerrado region. In this study, the REML/BLUP and GGE Biplot methods highly correlate in terms of genotype classi cation for selection and recommendation purposes. The genotypes VI 14127, VI 14197, VI 14026, and BRS 264 are the closest to a hypothetical ideal genotype.

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“…Considerable efforts are now being focused on manipulating the amino acid composition and balance in wheat as an important component of using the grains as medicine. While decades of primary emphasis on grain yield improvement have delivered increased gains worldwide [22][23][24], the trends are mixed for quality traits [22,25]. Grain protein content has declined [23,26,27], probably due to the strong trade-off with grain yield, but positive genetic gains were found for dough strength related parameters (mixograph mixing time, torque, alveograph) and the overall quality of bread has increased [27,28].…”

Section: Introductionmentioning

confidence: 99%

Impact of Breeding on Free Amino Acids of Wholegrain Flour in Wheat and Role of Phenology Genes

Emebiri

2023

Recent Prog Nutr

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Wheat (Triticum aestivum L.) is pivotal to global food security, with its energy-rich grains that are also the major vegetable protein source in human diets. Decades of primary emphasis on grain yield improvement have delivered increased gains worldwide, but the grain protein content has declined. Since amino acids are biosynthetic precursors of proteins, this research hypothesized that their contents in the wholegrain flour have also been impacted by past wheat breeding. To test this, the free amino acid content of wholegrain flour in 92 wheat cultivars released in a 20-year period were analyzed by regression against the year of release. The slope of the regression showed positive increases per year in 16 of the 19 individual amino acid considered. Among these, the increases in lysine, aspartic acid and arginine were statistically significant (P < 0.05). The level of lysine in wholegrain flour increased by 0.30 mg kg-1 yr-1 (R2 = 0.24) over the 20-year period of breeding. Similarly, the content of methionine increased by 0.2 mg kg-1 yr-1 (P = 0.07; R2 = 0.16), but free asparagine also increased at the rate of 6.51 mg kg-1 yr-1 (P = 0.11; R2 = 0.13). The study sought further to explore the impact of selection for key developmental genes (Vrn, Ppd, and Rht) that have been targeted for artificial selection since 1840. Wheat cultivars carrying the semi-dwarfing gene, Rht-B1b, showed 15% lower content of lysine (the most limiting essential amino acid) and 25% lower content of free asparagine (precursor of the neurotoxin, acrylamide) in the wholegrain compared to the tall cultivars. At the Vrn-A1 gene, the winter-type cultivars carrying Vrn-A1v allele were 28% lower in free asparagine, and 6% lower in lysine content than their spring-type (Vrn-A1a) counterparts. In conclusion, the results indicated that, contrary to the declining trend in grain protein content, free amino acids in wheat wholegrain flour have been increased by past breeding. Selections for semi-dwarfism and vernalization response have had significant impacts on free amino acid content, implying that genetic manipulation of Rht-B1b and Vrn-A1 genes could present a pathway to reducing the acrylamide-forming precursor in wheat wholegrain flour.

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Genetic gain for agronomic, physiological, and biochemical traits and quality attributes in bread wheat (Triticum aestivum L.): a meta-analysis

Cited by 6 publications

References 156 publications

Meta-Analysis of Influence of Diversity of Parental Forms on Heterosis and Specific Combining Ability of Their Hybrids

Meta-Analysis of Influence of Diversity of Parental Forms on Heterosis and Specific Combining Ability of Their Hybrids

Envirotypes applied to evaluate the adaptability and stability of wheat genotypes in the tropical region in Brazil

Impact of Breeding on Free Amino Acids of Wholegrain Flour in Wheat and Role of Phenology Genes

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