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

McNeal, F. H.; McGuire, C. F.; Klindworth, Daryl L.

doi:10.1007/bf00021654

Cited by 14 publications

(17 citation statements)

References 9 publications

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“…Increasing of yield has been achieved by developing cultivars with poor protein content (Jenner et al 1991, Rharrabti et al 2001 because of negative correlation between yield and protein content (Bhatia 1975, McNeal et al 1982, O'Brien and Ronalds 1984, Peterson et al 1992, Liu et al 1995, Boggini et al 1997. In our research, negative correlation was confirmed to exist between yield and protein content.…”

Section: Discussionsupporting

confidence: 65%

“…However, it is known that grain protein is negatively correlated with grain yield in wheat (Bhatia 1975, McNeal et al 1982, O'Brien and Ronalds 1984, Peterson et al 1992, Liu et al 1995, Boggini et al 1997, hence selection to increase one trait will tend to decrease the second trait (Jenner et al 1991, Rharrabti et al 2001. Despite this negative correlation, several studies have reported simultaneous improvement of grain yield and grain protein (Torp 1979, Cox et al 1985, Noaman et al 1990.…”

Section: Introductionmentioning

confidence: 99%

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Genetic gain in yield and protein over two cycles of a wheat recurrent selection program

et al. 2010

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Increasing grain yield and protein are important wheat breeding goals. However, the simultaneous improvement of both traits is complicated by a strong negative correlation and genotype by environment interaction (G×E). A recurrent selection program (RSP) reported here was initiated to produce germplasm, which combined both high yield-potential and increased protein content for the northern wheat-growing region of Australia. Diallel crossing amongst 10 cultivars (6 high yield and 4 high quality cultivars), followed by random mating amongst the F1s were used to produce the founding segregating population. Two years of multienvironment trials were conducted in the GRDC Northern Grain Region (NR) for each of the foundation (RSA0) and first (RSA1) cycles of recurrent selection. Data from the two cycles were analysed to evaluate the genetic gain achieved over the two cycles of selection, based on five potential selection strategies. Selection based on yield or protein or yield-adjusted protein only increased selected trait but reduced the other traits. However, application of selection based on yield and protein or yield and yield-adjusted protein simultaneously increased both yield (4.7%, 6.0% for RSA0 and 4.0%, 4.2% for RSA1 respectively) and protein (2.1%, 1.3% for RSA0 and 1.7%, 1.6% for RSA1 respectively).

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Section: Discussionsupporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Genetic gain in yield and protein over two cycles of a wheat recurrent selection program

et al. 2010

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“…Most agronomic characteristics were negatively correlated with protein; only main spike length, number of grains per plant, and number of effective spike were positively correlated, which corresponds well with the results of previous studies (McNeal et al, 1982;Holland et al, 2001;Khattak et al, 2005). We also found significant correlation between average grain weight per spike and quality characteristics at the level of 0.001.…”

Section: Hmw-gs Compositions From Triticum Aestivumsupporting

confidence: 92%

Characterization of agronomic and quality traits and HSW-G5 compositions from the progenies of common wheat (Triticum aestivum L.) with different protein content

Bian¹,

Sun²,

Sun³

et al. 2015

Genet. Mol. Res.

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ABSTRACT. High molecular weight glutenin subunits (HMW-GS) play an essential role in wheat processing quality. In this study, we evaluated the genetic pattern with HMW-GS composition between generations and examined whether agronomic and quality traits were correlated with each other. A wheat (Triticum aestivum L.) cultivar with high protein content and 2 cultivars with low protein content were subjected to a reciprocal cross. Sixteen agronomic and 4 quality characteristics were investigated. A total of 216 seeds from each F2 generation were chosen randomly and analyzed for HMW-GS composition using sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Agronomic and quality characteristics were not significantly different between reciprocal crosses, indicating no cytoplasmic effect on the characteristics studied. The separation ratio of 2 HMW-GS loci was 9:3:3:1, indicating no linkage between any 2 loci. The novel HMW-GS N was detected in cultivar R145, which did not follow the Mendelian segregation ratio. A Glu-A1a(1) band was not detected in 1 individual from Tian8901xR145. Average grain weight per spike was significantly correlated with quality characteristics and may be a suitable criterion for selecting high protein content in wheat breeding programs.

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“…Lo¨ffler and Busch (1982) and Costa and Kronstad (1994) found that selection based on this approach would tend to increase yield and decrease protein concentration. McNeal et al (1982) obtained genotypes with high yield and intermediate protein concentration by selection for grain protein yield. However, where protein concentration per se is important, as in Canada, selection of lines with high deviation above the regression line of protein concentration on grain yield is probably a more effective way to increase both traits (Lo¨ffler and Busch 1982;Monaghan et al 2001).…”

mentioning

confidence: 99%

Protein concentration inheritance and selection in durum wheat

Clarke¹,

Clarke²,

Pozniak³

et al. 2009

Can. J. Plant Sci.

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, T. N. 2009. Protein concentration inheritance and selection in durum wheat. Can. J. Plant Sci. 89: 601Á612. Grain protein concentration is important in the determination of the value of durum wheat (Triticum turgidum L. var. durum) for pasta manufacture. This study was undertaken to investigate the heritability and inheritance of protein concentration in seven genetically diverse durum populations, and to determine if the precision of this information could be improved by adjustment for micro-environmental trends. Grain protein and grain yield were measured at multiple locations and years. The Papadakis method was used to adjust for environmental trends in these replicated trials, and the moving mean was used for confimation in a sample of 19 unreplicated breeding trials. Environmental trends were substantial, and trend adjustment improved both correlations among locations and precision. Consequently, trend adjustment may be useful for genetic studies to improve trial precision, but would be of questionable merit in early-generation breeding trials due to the cost of additional protein measurements and marginal improvement in selection response. Grain yield was negatively correlated with grain protein concentration in all trials. Protein concentration was moderately heritable and complexly inherited in these populations, with the number of estimated effective factors ranging from 5 to 17 for the majority of trials. The complexity of inheritance and interactions of protein with yield and environment makes early-generation selection for protein difficult. Cette e´tude devait pre´ciser l'he´re´dite´de ce facteur chez sept populations de ble´dur ge´ne´tiquement diffe´rentes et de´terminer si on pouvait rehausser la pre´cision d'une telle information en tenant compte des tendances micro environnementales. Les auteurs ont mesure´la concentration de prote´ines dans le grain et le rendement grainier a`maints endroits et pendant plusieurs anne´es. Ils ont recouru a`la me´thode de Papadakis pour ajuster les tendances environnementales dans ces essais re´pe´te´s et se sont servis d'une moyenne mobile pour obtenir confirmation des re´sultats avec un e´chantillon de 19 essais d'hybridation sans re´plication. Les tendances environnementales e´taient substantielles et leur ajustement rehausse a`la fois les corre´lations d'un lieu a`l'autre et la pre´cision. Par conse´quent, cette technique pourrait faciliter les e´tudes ge´ne´tiques en ame´liorant la pre´cision des essais, mais son utilite´reste douteuse pour les essais d'hybridation portant sur les premie`res ge´ne´rations a`cause du couˆt supple´mentaire associe´au dosage additionnel des prote´ines et de l'ame´lioration minime des effets de la se´lection. Le rendement grainier e´tait corre´le´ne´gativement a`la concentration de prote´ines dans le grain dans tous les essais. La concentration de prote´ines est un caracte`re mode´re´ment he´re´ditaire et d'une he´re´dite´complexe chez ces populations, le nombre de facteurs efficaces variant de 5 a`17 pour la plupart des essai...

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

Cited by 14 publications

References 9 publications

Genetic gain in yield and protein over two cycles of a wheat recurrent selection program

Genetic gain in yield and protein over two cycles of a wheat recurrent selection program

Characterization of agronomic and quality traits and HSW-G5 compositions from the progenies of common wheat (Triticum aestivum L.) with different protein content

Protein concentration inheritance and selection in durum wheat

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