A Comparison of the Quantity and Quality of Protein in Certain Varieties of Soft Wheat<sup>1</sup>

Middleton, G. K.; Bode, C. E.; Bayles, B. B.

doi:10.2134/agronj1954.00021962004600110006x

Cited by 29 publications

(9 citation statements)

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“…LUSH (1948) and LERNER (1950) have discussed that, if genetic correlations are caused by pleiotropy, it is very unlikely that new combination traits can be obtained through deliberate hybridization and selection . Progress made to date in an attempt to simultaneously improve the GY and GPC of some wheat cultivars (MIDDLETON et al ., 1954 ;STUBER et al ., 1962 ;JOHNSON et al ., 1973) indicated that both traits could be improved by selection, and therefore, they may not be controlled by pleiotropy . Further support to the conclusion that the inverse protein-yield relationships were not caused by genetic factors can be obtained by collating the results of several studies that focused on the inheritance of GY and GPC in wheat .…”

Section: Discussionmentioning

confidence: 99%

Causes of negative correlations between grain yield and grain protein concentration in common wheat

1984

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Trictium aestivum, common wheat, protein content, genetic correlations, environmental correlations . SUMMARYIn a study designed to investigate the nature and basis of the relationships between grain yield (GY) and grain protein concentration (GBC) in common wheat, 11 populations, including 4 homozygous-homogeneous and 7 heterozygous-heterogeneous populations, were evaluated in a space planted and a solid seeded trial . Analysis of yield and protein data from each population revealed that phenotypic and environmental correlations between GY and GPC were negative and highly significant, whereas genetic correlation was significant in only one of 7 segregating populations studied . These results suggested that the inverse relationships between GY and GPC, although phenotypically real, were not caused by genetic factors . It would appear that environmental factors, source-sink interactions, and dilution of protein by non-protein compounds were the major agents that caused undesirable associations between the two traits .

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Section: Discussionmentioning

confidence: 99%

Causes of negative correlations between grain yield and grain protein concentration in common wheat

1984

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“…JOHNSON et al (1963) and MIDDLETON et al (1954) have observed winter wheat progeny with both high grain protein percentage and high grain yield, but finding this combination in recently developed, high yielding spring wheats has not been easy. SCHLEEIUBER & TUCKER (1959) have suggested that the major factors responsible for grain protein percentage, in order of importance, are environment, soil, and cultivar.…”

Section: Introductionmentioning

confidence: 99%

Agronomic and quality characteristics of spring wheat lines selected for protein content and protein yield

1982

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Triticum aestivum, wheat, protein percentage, protein yield, milling and baking data, recurrent selection. SUMMARYHigh protein cultivars of spring wheat (Triticum aestivum L.) from eight foreign countries and the United States were used in crosses to provide progeny for a recurrent selection program. After two cycles of selection, 40 lines selected for protein yield and 16 lines selected for protein percentage were evaluated with parents in yield nurseries at Bozeman, Montana.Lines selected for protein percentage had the highest protein percentages, protein yields similar to the parents, and grain yields lower than the parents. Lines selected for protein yield had protein percentages intermediate between those of the parents and lines selected for protein percentage, but they had the highest protein yields and grain yields. Protein percentage and grain yield were negatively correlated and protein yield and grain yield were positively correlated for both groups of lines. The data tend to suggest that protein yield may a better selection criterion than protein percentage for plant breeders to use in improving protein productivity, although additional testing of this hypothesis is proposed.Milling and baking data showed transgressive improvement over the mean of the parents in many important quality aspects, indicating that good quality lines can be obtained from crosses involving poor to mediocre quality cultivars.

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“…The mean protein content in wheat cultivars, nevertheless, varies within the limits of 12 to 15% [27]. The cultivar that is best in this parameter, Atlas 66, was bred in United States in 1954 [44,45,90] and since then has remained standard. The high-protein lines [74,[91][92][93][94][95], Naphal based on this cultivar and high-protein lines [91,92], Pusa 5-3 [93], Diamant [62] are also used as sources of high-protein genes.…”

Section: Ways Of Improving Grain Proteinmentioning

confidence: 99%

Grain Protein Content in Wheat: Genetics of the Character and Some Predictions for Its Improvement in Common Wheat

2005

Russ J Genet

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The results of studies on genetic control of the grain protein content in common wheat and the attempts of its improvement using traditional breeding approaches and methods of experimental mutagenesis and introgressive hybridization are presented. The evolution of the views on the genetic structure of the character is considered. Possible explanations are given to the fact that the attempts to significantly improve the character in question in common wheat cultivars have failed in spite of long-term genetic and selection studies. Possible lines of further investigation of genetic control of grain protein content and its increase in common wheat are discussed.

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A Comparison of the Quantity and Quality of Protein in Certain Varieties of Soft Wheat¹

Cited by 29 publications

References 0 publications

Causes of negative correlations between grain yield and grain protein concentration in common wheat

Causes of negative correlations between grain yield and grain protein concentration in common wheat

Agronomic and quality characteristics of spring wheat lines selected for protein content and protein yield

Grain Protein Content in Wheat: Genetics of the Character and Some Predictions for Its Improvement in Common Wheat

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A Comparison of the Quantity and Quality of Protein in Certain Varieties of Soft Wheat1

Cited by 29 publications

References 0 publications

Causes of negative correlations between grain yield and grain protein concentration in common wheat

Causes of negative correlations between grain yield and grain protein concentration in common wheat

Agronomic and quality characteristics of spring wheat lines selected for protein content and protein yield

Grain Protein Content in Wheat: Genetics of the Character and Some Predictions for Its Improvement in Common Wheat

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A Comparison of the Quantity and Quality of Protein in Certain Varieties of Soft Wheat¹