Breeding hard red spring wheat in western Canada: Historical trends in yield and related variables

1995 ◽  
Vol 75 (2) ◽  
pp. 387-393 ◽  
Author(s):  
T. N. McCaig ◽  
R. M. DePauw
Keyword(s):  
Bread Wheat ◽  
Spring Wheat ◽  
Maximum Yield ◽  
Grain Filling ◽  
Kernel Weight ◽  
Yield Potential ◽  
Western Canada ◽  
Historical Trends ◽  
Early Maturity ◽  
Hard Red Spring Wheat

The Western Bread Wheat Cooperative test and Central Bread Wheat Cooperative test are the bases of evaluation for cultivar registration in the Canada Western Red Spring (CWRS) wheat class. Historical data from these tests were analyzed with the objectives of comparing grain-yield-related variables of recently registered cultivars with those of earlier cultivars and determining the yield advances made within the CWRS wheat class. Canadian cultivars increased maximum yield potential approximately 6–9 kg ha−1 yr−1 during a 90–yr period. Yield potential of sawfly-resistant cultivars has been increasing at a rate of 11 kg ha−1 yr−1, although they consistently yielded less than the highest yielding hollow-stem cultivars. In general, the genetic yield increases resulted from an increase in the number of kernels produced rather than an increase in kernel size. This suggests that bread wheat grown on the prairies has been sink limited during grain filling. Breeding efforts focused on increasing Canadian production through the development of numerous CWRS cultivars with specific traits (e.g., early maturity, disease resistance) to allow hard red spring wheat to be grown over a broad geographical range. Plant height, time to maturity, and hectolitre weight did not change significantly during the 1947–1992 period. Key words:Triticum, kernel number, kernel weight, height, hectolitre weight

CDC Teal hard red spring wheat

1993 ◽  
Vol 73 (1) ◽  
pp. 193-197 ◽  
Author(s):  
G. R. Hughes ◽  
P. Hucl
Keyword(s):  
Spring Wheat ◽  
Black Soil ◽  
Yield Potential ◽  
Western Canada ◽  
Early Maturity ◽  
Hard Red Spring Wheat ◽  
Soil Zone ◽  
Early Maturing ◽  
Cultivar Description ◽  
The University

Teal is an early-maturing hard red spring wheat best adapted to the Black soil zone of western Canada. It combines early maturity with good yield potential, increased kernel size and leaf and stem rust resistance. It was developed at the University of Saskatchewan from a three-way cross involving BW514 (Nainari 60/Huelquen), Benito and BW38 (UM953A/Neepawa; UM953A = Sonora 64/Tezanos Pintos Precos). Key words: Triticum aestivum, cultivar description, bread wheat

scholarly journals Zealand hard red spring wheat

2018 ◽  
Vol 98 (6) ◽  
pp. 1409-1415 ◽  
Author(s):  
D. Spaner ◽  
M. Iqbal ◽  
A. Navabi ◽  
K. Strenzke ◽  
B. Beres
Keyword(s):  
Spring Wheat ◽  
Seed Mass ◽  
The Other ◽  
Yield Potential ◽  
High Yield ◽  
Plant Type ◽  
Early Maturity ◽  
Hard Red Spring Wheat ◽  
Tall Plant ◽  
Bulk Breeding

Zealand hard red spring wheat (Triticum aestivum L.) was developed using a modified bulk breeding method at the University of Alberta in Edmonton, AB. Zealand is an apically awn-letted, hollow-stemmed cultivar with a combination of high yield potential, tall plant type, large leaves, and early maturity. In three years of testing in the Western Bread Wheat Cooperative Registration Test during 2013–2015, Zealand exhibited grain yield similar to Glenn and Carberry and 5%–6% lower than Unity and AAC Viewfield, though this difference was not significant (p > 0.05). Zealand yielded 37% greater than the highest-yielding Canada Western Red Spring (CWRS) check, CDC Osler, in A-level testing at a certified organic farm. Zealand matured 1–4 d earlier and was taller than all the check cultivars, but exhibited lodging resistance better than Unity and similar to the other checks. The test weight of Zealand (79.1 kg hL−1) was lower than Glenn and similar to the other checks, while its seed mass was in the range of the check cultivars. Overall, Zealand was rated as resistant (R) to the prevalent races of leaf rust, moderately resistant (MR) to stripe rust and loose smut, intermediate (I) to stem rust and leaf spot, and moderately susceptible (MS) to common bunt and Fusarium head blight. Three years of end-use quality evaluation indicated that Zealand is acceptable for the CWRS class, with relatively few weaknesses. The tall plant type, large leaves, and early maturity render Zealand suitable for organic/high weed environments.

Yield potential in a dwarf spring wheat and response to crop thinning

1976 ◽  
Vol 87 (1) ◽  
pp. 113-122 ◽  
Author(s):  
R. A. Fischer ◽  
D. R. Laing
Keyword(s):  
Grain Yield ◽  
Spring Wheat ◽  
Wheat Variety ◽  
Grain Filling ◽  
Kernel Weight ◽  
Yield Potential ◽  
High Fertility ◽  
Northwest Mexico ◽  
Grain Filling Period ◽  
Spring Wheat Variety

SummaryExperiments with wheat describing the effects of crop thinning on grain yield and its components are presented. These were carried out over 5 years in northwest Mexico, using a high-yielding dwarf spring-wheat variety (Triticum aestivum cv. ‘Yecora 70’) grown under irrigation and high fertility. It was shown that thinning largely relieved competition for light, thus increasing photosynthate levels in the plants remaining after thinning. The objective was to evaluate this simple technique as a guide to understanding when grain yield and its components were determined and, in particular, the extent to which post-anthesis photosynthate supply limited yield.There were major responses in grain yield with thinning between about 50 and 100 days after seeding, and in number of spikes and of grains with thinning between 50 and 90 days (50% anthesis was reached at 87 days). Number of spikelets per spike showed small responses to early thinning (before 50 days). Number of grains/spikelet and kernel weight snowed positive responses to thinning between 65 and 90 days, and 90 and 115 days, respectively. These results agreed with adjacent shading and CO2 fertilization studies but, because of certain difficulties in interpretation of responses, pre-anthesis thinning was not considered a very useful technique.Anthesis thinning was carried out on 21 separate crops: the kernel weight increase relative to the unthinned control ranged from 6 to 41%, averaging 20%. Anthesis thinning led to increases in stem weight during the first half of the grain filling period, followed by increases in grain growth rate in the latter half. The increase in final kernel weight was greater with higher temperature and lower radiation during grain filling; these variables explained 64% of the variation in kernel weight response. It is suggested that the kernel weight response does indicate the degree of photosynthate limitation during grain filling, showing reasonable agreement with adjacent shading and CO2 fertilization studies. It was concluded that anthesis thinning, because of its relative simplicity, is a useful technique. Implications for yield improvement in Yecora of the results provided by this technique are discussed.

THE EFFECT OF WINDROWING HARD RED SPRING WHEAT AT DIFFERENT STAGES OF MATURITY AT FOUR LOCATIONS IN WESTERN CANADA

1979 ◽  
Vol 59 (2) ◽  
pp. 321-328 ◽  
Author(s):  
M. E. DODDS ◽  
K. E. BOWREN ◽  
D. A. DEW ◽  
D. G. FARIS
Keyword(s):  
Spring Wheat ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Significant Loss ◽  
Western Canada ◽  
Canadian Prairies ◽  
Hard Red Spring Wheat ◽  
Moisture Contents ◽  
Percent Protein ◽  
Growing Region

Hard red spring wheat (Triticum aestivum L.) cv. Neepawa was windrowed at kernel moisture contents (KMC), wet basis, ranging from about 45 to 14% for 3 yr at four diverse locations, from 50° 16′ to 55° 12′ N latitude, in western Canada. Compared with windrowing at lower KMCs, cutting the crop at 35% KMC did not cause significant loss in seed yield or quality as measured by test weight (kg/hl), 1000-kernel weight, or percent protein. The results show that cutting wheat at 25–35% KMC can be recommended as a general practice throughout the wheat-growing region of the Canadian Prairies.

scholarly journals AAC Redstar hard red spring wheat

2020 ◽  
Author(s):  
Andrew James Burt ◽  
D.G. Humphreys ◽  
J. Mitchell Fetch ◽  
Denis Green ◽  
Thomas Fetch ◽  
...  
Keyword(s):  
Spring Wheat ◽  
Protein Concentration ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Head Blight ◽  
Lodging Resistance ◽  
Canadian Prairies ◽  
Hard Red Spring Wheat ◽  
Early Maturing ◽  
Moderately Resistant

AAC Redstar is an early maturing, high yielding hard red spring wheat (Triticum aestivum L.) cultivar that is well adapted to the northern Canadian Prairies and eligible for grades of Canada Western Red Spring (CWRS) wheat. Over three years (2016-2018) of testing in the Parkland Wheat Cooperative registration trials, AAC Redstar was 11% higher yielding than AC Splendor, 6% higher than Parata, and 4% higher than Glenn and Carberry. AAC Redstar matured 3 days earlier than Glenn, 2 days earlier than Carberry and had similar maturity to Parata. AAC Redstar was shorter than all checks except Carberry and had better lodging resistance compared to all the check cultivars in the registration trial. The test weight and thousand kernel weight of AAC Redstar were similar to Carberry. The grain protein concentration of AAC Redstar was 0.2% lower than Carberry. AAC Redstar was rated moderately resistant to Fusarium head blight, leaf rust, stripe rust and common bunt. AAC Redstar had resistant reactions to loose smut, and stem rust. AAC Redstar was registered under the CWRS market class.

scholarly journals Jake hard red spring wheat

2020 ◽  
Vol 100 (1) ◽  
pp. 129-135
Author(s):  
D. Spaner ◽  
M. Iqbal ◽  
A. Navabi ◽  
K. Strenzke ◽  
B. Beres
Keyword(s):  
Spring Wheat ◽  
Triticum Aestivum L ◽  
Yield Potential ◽  
High Yield ◽  
Head Blight ◽  
Breeding Method ◽  
Hard Red Spring Wheat ◽  
University Of Alberta ◽  
Bulk Breeding ◽  
Moderately Resistant

Jake hard red spring wheat (Triticum aestivum L.) was developed using a modified bulk breeding method at the University of Alberta, Edmonton, AB. Jake is an awned, hollow-stemmed line with high yield potential, medium tall plants, and medium maturity. During the three years (2015–2017) of evaluation in the Parkland Wheat Cooperative test, Jake yielded 6% higher than the mean of all of the checks, and matured 0.7 and 1.7 d later than Parata and Splendor but 2.9 d earlier than Glenn. Jake was 91.2 cm tall, shorter than AC Splendor (95.8 cm), but similar in height to Glenn (91.8 cm) and Parata (92 cm). The lodging score of Jake (2.2) was lower than Parata (3.1) and AC Splendor (3.1), but similar to Glenn. The test weight of Jake (80.8) was higher than AC Splendor (78.3), similar to Parata (80.5), but lower than Glenn (82.5). The grain weight of Jake (35.6 g) was similar to Parata (35.6 g), but lower than Glenn (36.7 g) and AC Splendor (37.4 g), while the NIR Protein of Jake (15.9%) was higher than Glenn (15.5%) and similar to the other checks. Jake was moderately resistant to resistant to leaf, stem, and stripe rusts, and moderately resistant to common bunt during the 3 yr of testing. The reaction of Jake to Fusarium head blight was variable and ranged from moderately susceptible to moderately resistant, with DON values similar to Carberry and Glenn. Three years of end-use quality evaluation has indicated that Jake is acceptable for the CWRS class.

Coleman hard red spring wheat

2015 ◽  
Vol 95 (5) ◽  
pp. 1037-1041 ◽  
Author(s):  
D. Spaner ◽  
A. Navabi ◽  
K. Strenzke ◽  
M. Iqbal ◽  
B. Beres
Keyword(s):  
Spring Wheat ◽  
Fusarium Head Blight Resistance ◽  
Yield Potential ◽  
High Yield ◽  
Head Blight ◽  
Lodging Resistance ◽  
Hard Red Spring Wheat ◽  
Wheat Market ◽  
End Use ◽  
Contamination Levels

Spaner, D., Navabi, A., Strenzke, K., Iqbal, M. and Beres, B. 2015. Coleman hard red spring wheat. Can. J. Plant Sci. 95: 1037–1041. ‘Coleman’ hard red spring wheat is an awned, hollow-stemmed cultivar of high yield potential adapted to the wheat growing regions of western Canada. Averaged over 30 site-years, during 3 yr of testing in the Parkland Wheat Cooperative Registration Test (2010–2012), Coleman was higher yielding than Katepwa (8.5%) (P≤0.05), AC Splendor (5.8%) (P≤0.05), CDC Teal (2.1%) and CDC Osler (2%), exhibited maturity, height and lodging resistance similar to, or in the range of the checks, had higher test weights than the checks and showed good resistance to leaf, stem and stripe rust. Coleman exhibited Fusarium head blight resistance greater than and DON contamination levels lower than the check cultivars. Coleman exhibited susceptible reactions to common bunt and loose smut. End-use quality attributes of Coleman meet the specifications of the Canada Western Red Spring (CWRS) wheat market class.

Breeding durum wheat in western Canada: Historical trends in yield and related variables

1995 ◽  
Vol 75 (1) ◽  
pp. 55-60 ◽  
Author(s):  
T. N. McCaig ◽  
J. M. Clarke
Keyword(s):  
Durum Wheat ◽  
Triticum Turgidum ◽  
Kernel Weight ◽  
Western Canada ◽  
Kernel Number ◽  
Historical Trends ◽  
Days To Maturity ◽  
Sink Demand ◽  
Over Time ◽  
Selection Of

Canadian durum wheat (Triticum turgidum L.) production is centred in the Brown and Dark Brown soil zones, areas of limited rainfall. For more than 50 yr, lines have been evaluated in the multi-location Durum Cooperative Test. Data from this test, over the period 1947–1992, were analyzed with the objectives of determining the advances that have been made within the Canada Western Amber Durum (CWAD) wheat class and comparing yield-related variables of recently registered cultivars with those of earlier cultivars. Canadian-developed cultivars have increased yields about 0.81% yr−1 relative to Hercules, or approximately 22.6 kg ha−1 yr−1. As kernel weight has remained unchanged, the genetic yield increases have resulted entirely from an increase in the number of kernels produced. Because kernel number is determined prior to, and during, anthesis, further yield increases may depend upon selection of genotypes that produce higher numbers of kernels, thereby increasing sink demand. While plant height and hectolitre weight have been decreasing over time, neither variable was significantly (P < 0.05) correlated with the yield increases that have taken place over the 29-yr period. The selection pressure toward shorter cultivars may have involved other agronomic advantages, such as decreased lodging. Days to maturity did not change significantly over time and was not correlated with yield. Key words:Triticum turgidum, kernel number, kernel weight, height, hectolitre weight

Stettler hard red spring wheat

2009 ◽  
Vol 89 (5) ◽  
pp. 945-951 ◽  
Author(s):  
R M DePauw ◽  
R E Knox ◽  
F R Clarke ◽  
J M Clarke ◽  
T N McCaig
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Spring Wheat ◽  
Doubled Haploid ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Hard Red Spring Wheat ◽  
Volume Weight ◽  
Grain Volume Weight ◽  
End Use

Based on 34 replicated trials over 3 yr, Stettler, a doubled haploid hard red spring wheat (Triticum aestivum L.), expressed significantly higher grain yield than all checks except Superb. Wheat and flour protein concentration were significantly greater than all of the checks except Lillian. It matured significantly later than AC Barrie and Katepwa but earlier than Superb. Stettler was significantly shorter than all of the checks except Superb and was more resistant to lodging than Katepwa and Laura. Stettler had high grain volume weight and intermediate kernel weight relative to the checks, and meets the end-use quality specifications of the Canada Western Red Spring wheat market class. Stettler expressed resistance to prevalent races of stem rust, common bunt and loose smut, with moderate susceptibility to prevalent races of leaf rust and fusarium head blight.Key words: Triticum aestivum L., cultivar description, grain yield, protein, disease resistance, doubled haploid

GENOTYPE-ENVIRONMENT INTERACTIONS IN YIELD OF WHEAT

1969 ◽  
Vol 49 (6) ◽  
pp. 743-751 ◽  
Author(s):  
R. J. Baker
Keyword(s):  
Detailed Analysis ◽  
Spring Wheat ◽  
Variance Components ◽  
Wheat Yield ◽  
Yield Stability ◽  
Western Canada ◽  
Environment Interaction ◽  
Hard Red Spring Wheat ◽  
Genotype Environment Interaction ◽  
Different Types

A detailed analysis of genotype-environment interactions was carried out among yields of six cultivars of hard red spring wheat grown at each of nine locations in five different years. Subdividing the sum of squares for genotype-environment interactions into components due to each cultivar indicated that the Finlay-Wilkinson method of measuring yield stability is of little value for wheat yield in western Canada. Conventional estimates of variance components due to the different types of genotype-environment interaction indicated that all except the genotype-year interaction were significant and important.

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