Quality and Value of Organic Grain from Contrasting Breadmaking Wheat Varieties and Near Isogenic Lines Differing in Dwarfing Genes

Gooding, M. J.; Cannon, Nicola; Thompson, Andrew J.; Davies, W. P.

doi:10.1080/01448765.1999.9755237

Cited by 29 publications

(32 citation statements)

References 9 publications

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“…QKh-2D.1 and QTw-2D might have been identified due to the presence of other linked genes. The Rht-B1 gene is associated with physiological processes that affect not only plant height but also yield, grain quality, seedling vigor and adaptability to adverse environments (Fischer and Stockman 1986;Gooding et al 1999Gooding et al , 2012McCartney et al 2006;Zheng et al 2010;Bai et al 2013;Zhang et al 2013;Asif et al 2015). This study indicated that Rht-B1b had negative effects on TKW, KW, KDR, TW, DT, and ZEL.…”

Section: Novel Stable Qtls and Qtl Co-segregation With Known Genesmentioning

confidence: 88%

QTL detection for wheat kernel size and quality and the responses of these traits to low nitrogen stress

et al. 2015

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QTLs for tolerance to N stress, 27 and 14 of which were stable across the tested environments, respectively. These QTLs were distributed across all wheat chromosomes except for chromosomes 3A, 4D, 6D, and 7B. Eleven QTL clusters that simultaneously affected kernel size-and quality-related traits were identified. At nine locations, 25 of the 49 QTLs for N deficiency tolerance coincided with the QTLs for kernel characteristics, indicating their genetic independence. The feasibility of indirect selection of a superior genotype for kernel size and quality under high-N conditions in breeding programs designed for a lower input management system are discussed. In addition, we specified the functions of Glu-A1, Glu-B1, Glu-A3, Glu-B3, TaCwi-A1, TaSus2, TaGS2-D1, PPO-D1, Rht-B1, and Ha with regard to kernel characteristics and the sensitivities of these characteristics to N stress. This study provides useful information for the genetic improvement of wheat kernel size, quality, and resistance to N stress. Abbreviations GPCGrain protein content WGC Wet gluten content AbstractKey message QTLs for kernel characteristics and tolerance to N stress were identified, and the functions of ten known genes with regard to these traits were specified. Abstract Kernel size and quality characteristics in wheat (Triticum aestivum L.) ultimately determine the end use of the grain and affect its commodity price, both of which are influenced by the application of nitrogen (N) fertilizer. This study characterized quantitative trait loci (QTLs) for kernel size and quality and examined the responses of these traits to low-N stress using a recombinant inbred line population derived from Kenong 9204 × Jing 411. Phenotypic analyses were conducted in five trials that each included lowand high-N treatments. We identified 109 putative additive QTLs for 11 kernel size and quality characteristics and 49Communicated by I. Mackay.F. Cui, X. Fan, and M. Chen contributed equally to this work. Electronic supplementary materialThe online version of this article

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Section: Novel Stable Qtls and Qtl Co-segregation With Known Genesmentioning

confidence: 88%

QTL detection for wheat kernel size and quality and the responses of these traits to low nitrogen stress

et al. 2015

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“…In the present study, the semi-dwarfing alleles increased HFN in Mercia background. Gooding et al (1999) explained that the new varieties (e.g., Mercia) tend to have higher HFN than their predecessors (e.g., Maris Widgeon). In this study, Rht-B1c increased HFN in both backgrounds (Addisu et al 2009;Uppal 2012).…”

Section: Hfn and Sds Sedimentation Volumementioning

confidence: 97%

“…Moreover, significant yield improvements with dwarf alleles can be associated with decreased protein concentration of grain, specific weight, and 1000-grain weight (Triboi et al 2006). In UK, the adoption of varieties carrying Rht-D1b in commercial production between 1974 and 1993 has reduced the concentration of crude protein (Gooding et al 1999) because of the genetic selection that was mostly for a higher harvest index (Gooding and Davies 1997). The GA-sensitive allele Rht12 (reduced height) was associated with a decreased HFN (Gooding et al 2012), but the grain nitrogen and sulphur ratio was not affected by Rht alleles (Addisu et al 2009).…”

Section: Introductionmentioning

confidence: 98%

Effect of Rht alleles on wheat grain yield and quality under high temperature and drought stress during booting and anthesis

Alghabari

Ihsan

Hussain

et al. 2015

Environ Sci Pollut Res

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The present study examined the effects of gibberellin semi-sensitive reduced height (Rht) alleles on wheat grain yield and quality under high temperature and drought stress during booting and anthesis stages. Near-isogenic lines (NILs) of winter wheat (Rht (tall), Rht-B1b, Rht-D1b, Rht-B1c, Rht-8c, Rht-D1c, Rht-12) having background of Mercia and Maris Widgeon cultivars were compared under variable temperatures (day/night: 20/12, 27/19, 30/22, 33/25, 36/28, and 39/31 °C) and irrigation regimes. Pots were transferred to controlled thermal conditions (Saxcil growth chamber) during booting and anthesis stages and were maintained at field capacity (FC) or had water withheld. High temperature (>30 °C) and drought stress for seven consecutive days during booting and anthesis stages reduced the grain yield, while increased nitrogen (N) and sulphur (S) concentrations. A 50 % reduction in grain yield was fitted to have occurred at 37.4 °C for well-watered plants and at 31.4 °C for drought-stressed plants. The N and S concentrations were higher for severe dwarfs, whereas no significant differences were observed between tall and semi-dwarfs in Mercia. In the taller background (Maris Widgeon), N and S concentrations were significantly higher compared with that in Mercia. In Mercia, the severe dwarf Rht-D1c had higher Hagberg falling number (HFN) and sodium dodecyl sulphate (SDS) sedimentation volume. In both backgrounds, semi-dwarfs and severe dwarfs had higher HFN. Moreover, the SDS sedimentation volumes in Maris Widgeon were also higher than that in Mercia. Greater adaptability and improved grain quality traits suggested that severe dwarf Rht alleles are better able to enhance tolerance to high temperature and drought stress in wheat.

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“…The only treatment to increase CP was the highest single topdress application. When an increase in yield occurs, it is often accompanied by an increase in grain N yield but not necessarily CP as the increase in carbohydrates dilutes the N [2,41]. In contrast, where %OM was high (VT-2013), N treatments produced fewer positive yield responses but more increases in CP.…”

Section: Site-year Effectsmentioning

confidence: 99%

“…Grain CP is a major indicator of quality as it dictates dough elasticity and workability [1]. On the bread wheat market, a grain CP of generally 120 g kg −1 or greater is desired because it gives dough strength and provides loaf volume [2]. Grain with lower CP can be sold as feed but typically receives a lower price [3].…”

Section: Introductionmentioning

confidence: 99%

Evaluating Split Nitrogen Applications and In-Season Tests for Organic Winter Bread Wheat

Roche

Mallory

Darby

2017

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Achieving high grain yields and crude protein (CP) standards in organic winter wheat (Triticum aestivum L.) is challenging because ensuring that adequate nitrogen (N) is available at key periods of wheat growth is difficult in organic systems. Split application regimes and in-season N management tests may improve organic production. In field trials conducted over four site-years in Maine and Vermont, USA, N application regimes were analyzed for their effects on organic winter wheat, N uptake, grain yield, and CP. Tiller density and tissue N tests were evaluated as in-season decision tools. Eight treatments arranged in a non-factorial design differed in terms of N application timing (pre-plant (PP), topdress at tillering (T1), and topdress at pre-stem extension (T2)) and N rate. Treatments were: (1) an untreated check, (2) pre-plant N at a low rate of 78 kg N ha −1 (PP L ), (3) pre-plant N at a high rate of 117 or 157 kg N ha −1 (PP H ), (4) T1 78 , (5) PP L + T1 39 , (6) PP L + T2 39 , (7) PP H + T2 39 , and (8) PP L + T1 39 +T2 39 . Responses to N treatments were variable among site-years, however some common results were identified. The PP-only treatments increased grain yields more than they increased CP. The T1 78 and PP H + T2 39 treatments were the most effective at increasing yield and CP, compared with the PP-only treatments. Tiller density and tissue N tests were good predictors of grain yield (r = 0.52, p < 0.001) and CP (r = 0.75, p < 0.001) respectively.Future work should test in-season decision tools using a wider range of tiller densities, and topdress N rates against tissue N measurements.

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Quality and Value of Organic Grain from Contrasting Breadmaking Wheat Varieties and Near Isogenic Lines Differing in Dwarfing Genes

Cited by 29 publications

References 9 publications

QTL detection for wheat kernel size and quality and the responses of these traits to low nitrogen stress

QTL detection for wheat kernel size and quality and the responses of these traits to low nitrogen stress

Effect of Rht alleles on wheat grain yield and quality under high temperature and drought stress during booting and anthesis

Evaluating Split Nitrogen Applications and In-Season Tests for Organic Winter Bread Wheat

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