AC2000 hard white spring wheat

DePauw, R. M.; Sadasivaiah, R. S.; Clarke, J. M.; Fernandez, M. R.; Knox, R. E.; McCaig, T. N.; McLeod, J. G.

doi:10.4141/p01-108

Cited by 4 publications

(3 citation statements)

References 13 publications

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“…AC Foremost (CPSR), AC Karma (CPSW), Laser (CWES), and Amazon (CWES) were removed from the study after 2000 (data not shown) to accommodate an additional level in the nitrogen factor. A newly registered CPSW variety, AC2000 (DePauw et al 2002), was added in 2001.…”

Section: Methodsmentioning

confidence: 99%

“…Cultivars were selected to represent general purpose markets in western Canada for which dry land production of soft white spring wheat could be eligible. AC2000 (DePauw et al 2002) and AC Vista were chosen to represent the Canada prairie spring white (CPSW) class, AC Crystal ) and AC Taber (Knox et al 1992) to represent CPSR, AC Corinne (Humphreys et al 2001) to represent Canada western extra strong (CWES), and AC Reed (Sadasivaiah et al 1993) and AC Nanda (Sadasivaiah et al 2000) to represent CSWSW. AC Reed occupied the majority of acreage at the time and was the industry check cultivar for quality; AC Nanda is later maturing and has a contrasting growth and quality profile to AC Reed (Sadasivaiah et al 1993).…”

Section: Methodsmentioning

confidence: 99%

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The influence of moisture regime, N management, and cultivar on the agronomic performance and yield stability of soft white spring wheat

Beres¹,

Sadasivaiah²,

McKenzie³

et al. 2008

Can. J. Plant Sci.

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. 2008. The influence of moisture regime, N management, and cultivar on the agronomic performance and yield stability of soft white spring wheat. Can. J. Plant Sci. 88: 859Á872. Field studies were conducted for 4 yr (2000Á2003) in southern Alberta to determine the agronomic suitability and yield stability of soft white spring wheat across an array of moisture and fertility regimes. Two soft white spring wheat cultivars (AC Reed and AC Nanda) with contrasting maturity and quality profiles were compared to nine varieties representing the Canada Prairie Spring White, Canada Prairie Spring Red, and Canada Western Extra Strong wheat classes. The cultivars were managed with five varying rates of mid-row banded ammonium nitrate 0, 19, 38, 57, and 76 kg N ha (1 . AC Reed matured earlier than most cultivars except AC Vista, and had the highest average yield. Yield stability analyses showed that AC Reed was well adapted to all environments but AC Nanda was less stable. AC Vista, AC Crystal, and AC Karma had average to good stability, but produced less grain than both AC Reed and AC Nanda. For non-irrigated production, yield was generally optimized at the mid-row banded rate 38 kg N ha(1 of ammonium nitrate. Response to N varied at the irrigated sites, but sites with lower initial soil NO 3 -N levels were responsive through the 76 kg N ha(1 rate. The soft white spring wheat class responded similarly to N in all moisture regimes, but whole-grain protein accumulation was not always lowest in the soft white spring wheat class.This study indicates that long-term sustainable production of soft white spring wheat in semi-arid, non-irrigated environments is possible, and would be most successful if cultivars were selected with yield stability, maturity and protein characteristics similar to AC Reed.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

The influence of moisture regime, N management, and cultivar on the agronomic performance and yield stability of soft white spring wheat

Beres¹,

Sadasivaiah²,

McKenzie³

et al. 2008

Can. J. Plant Sci.

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“…Heavy and prolonged rains at harvest negatively impact all four of the primary grade determinants, although sprouting has the greatest direct effect on end-use quality (Derera 1980;Edwards et al 1989;Matsuo et al 1982). Numerous research efforts have been directed toward improving methods of measuring sprouting-resistance within Canadian breeding programs (Clarke et al 1994;DePauw and McCaig 1991;McCaig and DePauw 1992), and these efforts have resulted in the release of improved cultivars (DePauw et al 2002(DePauw et al , 2004.…”

mentioning

confidence: 99%

Kernel colour changes associated with field weathering of spring wheat.

McCaig¹,

Gan²,

Clarke³

et al. 2006

Can. J. Plant Sci.

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. Kernel colour changes associated with field weathering of spring wheat. Can. J. Plant Sci. 86: 371-377. The Canadian wheat-grading system is based on visual assessment to estimate end-use quality, both for assignment to classes and to grades within classes. Extensive training and experience are required to accurately interpret visual indicators of quality. Therefore, breeding programs are attempting to develop instrumental techniques to objectively measure visual characteristics of potential new cultivars. The objective of this research was to examine colour changes associated with field weathering of wheat cultivars from the Canada Western Red Spring, Canada Western Amber Durum, and Canada Prairie Spring Red and White classes of wheat, as measured with a portable colorimeter. The class means exhibited colour differences, although the large variability within classes suggests that, used in isolation, colour measurements would not be a satisfactory means of identifying the class of individual samples. Weathering caused an increase in L* (lightness), a decrease in a* (redness), and a slight increase in b* (yellowness), and the effects were similar for all classes. Severe weathering caused loss of vitreousness in addition to bleaching, and the colour measurements reflect the integrated colour changes associated with both effects. Within each class, although there were cultivar differences for colour, the cultivars responded similarly to weathering, suggesting that breeders should simply select lines which exhibit intense, desirable colour prior to weathering. Les obtenteurs s'efforcent donc de mettre au point des techniques instrumentales qui les aideront à quantifier objectivement les paramètres visuels des nouveaux cultivars éventuels. La présente étude avait pour but d'établir les variations de couleur associées à l'altération sur pied de variétés appartenant aux différentes classes de blé (blé roux de printemps de l'Ouest canadien, blé dur ambré de l'Ouest canadien, blé roux de printemps des Prairies et blé blanc) au moyen d'un colorimètre portatif. La couleur moyenne des différentes classes varie effectivement, mais la forte variabilité au sein de chaque classe laisse supposer qu'employés séparément, les relevés colorimétriques ne permettraient pas d'identifier de manière satisfaisante la classe des échantillons. L'altération sur pied entraîne une hausse de L* (luminosité), une baisse de a* (rouge) et une légère hausse de b* (jaune) dans toutes les classes. Une grave altération pourrait entraîner la perte de la vitrosité et le blanchiment du grain, de sorte que les valeurs reflèteraient le changement de couleur général associé à ces deux conséquences. Bien qu'ils présentent des différences de couleur, les cultivars de chaque classe réagissent de la même façon à l'altération sur pied, signe que les obtenteurs devraient se contenter de sélectionner les lignées ayant la couleur souhaitée la plus vive avant l'altération sur pied.

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Assessment of molecular diversity at QTLs for preharvest sprouting resistance in wheat using microsatellite markers

Fofana

Humphreys

Rasul

et al. 2008

Genome

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Breeding for preharvest sprouting (PHS) resistance is of great interest in wheat-growing areas where high rainfall occurs during grain ripening and harvest. We have characterized 32 wheat accessions using 33 microsatellite markers flanking PHS quantitative trait loci (QTLs) previously identified on group 3, 4, 5, and 6 chromosomes of hexaploid wheat. A total of 229 alleles, with an average of 6.94 alleles per marker, were observed among the 32 wheat lines. The polymorphic information content (PIC) was estimated and ranged between 0.25 and 0.90, with an average of 0.67. A cluster analysis revealed 3 main clusters and 3 singlet wheat lines, which is in agreement with pedigree-based relationships, seed coat colour, and origin. Canadian wheat accessions were subdivided into 4 sub-clusters based on pedigree and wheat classes. Grouping of preharvest sprouting germplasm into clusters was consistent with cluster-specific allele diversity observed in the PHS-resistant lines AUS1408, Red-RL4137, White-RL4137, and Kenya321. The implications of these findings in white wheat breeding for PHS tolerance are discussed.

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AC2000 hard white spring wheat

Cited by 4 publications

References 13 publications

The influence of moisture regime, N management, and cultivar on the agronomic performance and yield stability of soft white spring wheat

The influence of moisture regime, N management, and cultivar on the agronomic performance and yield stability of soft white spring wheat

Kernel colour changes associated with field weathering of spring wheat.

Assessment of molecular diversity at QTLs for preharvest sprouting resistance in wheat using microsatellite markers

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