INTERRELATIONSHIPS AMONG AGRONOMIC AND QUALITY TRAITS IN A SPRING WHEAT CROSS

1969 ◽  
Vol 49 (5) ◽  
pp. 581-586 ◽  
Author(s):  
M. L. Kaufmann ◽  
V. M. Bendelow ◽  
R. J. Baker
Keyword(s):  
Nitrogen Content ◽  
Spring Wheat ◽  
Agronomic Traits ◽  
Triticum Aestivum L ◽  
Mean Value ◽  
Kernel Weight ◽  
Tolerance Index ◽  
Quality Traits ◽  
Wheat Cross ◽  
Sedimentation Value

Phenotypic correlations among five quality traits and five agronomic traits were calculated for three groups of 110 lines of a spring wheat cross (Triticum aestivum L.) grown in a total of four years in central Alberta. All correlations among pairs of traits were homogeneous from year to year with the exception of four involving maturity, yield, height and grain nitrogen content. The large negative correlation between nitrogen content and yield was judged detrimental to the prospects of simultaneous improvement of both traits. Maturity, height, kernel weight and yield were all positively interrelated. Large negative correlations were observed between sedimentation, value and tolerance index and between nitrogen content and starch damage. Sedimentation value and dough development time exhibited a strong positive relationship. The mean value for lines fell within the range of the parents in all cases except for sedimentation value and height.

The effect of weeds on soil arbuscular mycorrhizal fungi and agronomic traits in spring wheat (Triticum aestivumL.) under organic management in Canada

2015 ◽  
Vol 95 (4) ◽  
pp. 615-627 ◽  
Author(s):  
Hiroshi Kubota ◽  
Sylvie A. Quideau ◽  
Pierre J. Hucl ◽  
Dean M. Spaner
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Spring Wheat ◽  
Mycorrhizal Fungi ◽  
Agronomic Traits ◽  
Arbuscular Mycorrhizal ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Wheat Cultivars ◽  
Organic Management ◽  
Organic Systems

Kubota, H., Quideau, S. A., Hucl, P. J. and Spaner, D. M. 2015. The effect of weeds on soil arbuscular mycorrhizal fungi and agronomic traits in spring wheat (Triticum aestivum L.) under organic management in Canada. Can. J. Plant Sci. 95: 615–627. Understanding the influence of weeds in agroecosystems may aid in developing efficient and sustainable organic wheat production systems. We examined the effect of weeds on soil microbial communities and the performance of spring wheat (Triticum aestivum L.) under organic management in Edmonton, AB, Canada. We grew 13 Canadian spring wheat cultivars in organically managed hand-weeded less-weedy and weedy treatments in 2010 and 2011. The less-weedy treatment exhibited greater grain yield and tillers per square meter, while kernel weight, test weight, days to maturity, plant height, grain P and protein content were not altered by weed treatment. Canada Western Red Spring (CWRS) wheat cultivars CDC Go and CDC Kernen were the most yield-stable because they minimized fertile tiller reduction in response to weed pressure (10 and 13% reduction, respectively, compared with the average reduction of 20%). Other cultivars exhibited yield stability through increased kernel weight. The contribution of arbuscular mycorrhizal fungi (AMF) to the total phospholipid fatty acid increased in both treatments; however, the rate of this increase was greater in the weedy treatment than the less-weedy treatment (from 2.9 to 3.9%, from 2.8 to 3.1%, respectively). Weed dry biomass was positively correlated with AMF% in the less-weedy treatment only. Organic systems tend to be weedier than conventional systems. We found that weeds are important determinants of AMF proliferation in soil. In addition, choosing wheat cultivars that maintain important yield components under severe weed stress is one strategy to maximize yields in organic systems.

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.

EFFECTS OF MOISTURE STRESS AT EARLY HEADING AND OF NITROGEN FERTILIZER ON THREE SPRING WHEAT CULTIVARS

1973 ◽  
Vol 53 (1) ◽  
pp. 1-5 ◽  
Author(s):  
S. DUBETZ ◽  
J. B. BOLE
Keyword(s):  
Water Stress ◽  
Soil Water ◽  
Spring Wheat ◽  
High Stress ◽  
Moisture Stress ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Soil Water Stress ◽  
Boot Stage ◽  
Four Levels

Three cultivars of spring wheat (Triticum aestivum L.) were grown at four levels of N fertilizer in metal lysimeters protected from rain by an automatic rain shelter. A soil water stress of 8 bars was developed in one-half of the lysimeters at the early boot stage. Water stress reduced yield by severely decreasing the number of kernels per spike. Tillering was not affected and kernel weight was increased. Pitic 62 withstood the high stress better than Manitou or Kenhi. N enhanced yield by increasing tillering. Kernel weight was unaffected by N, and the number of kernels per spike was decreased. Pitic, which had a higher number of kernels per spike, outyielded Manitou and Kenhi. The protein content of Manitou was higher than that of the other two cultivars. The cultivars differed in their reaction to soil water stress and N.

STATISTICAL EVALUATION OF TECHNIQUES FOR PREDICTING BAKING QUALITY OF WHEAT CULTIVARS

1972 ◽  
Vol 52 (2) ◽  
pp. 139-146 ◽  
Author(s):  
R. A. ORTH ◽  
R. J. BAKER ◽  
W. BUSHUK
Keyword(s):  
Development Time ◽  
Quality Parameters ◽  
Kernel Weight ◽  
Tolerance Index ◽  
Loaf Volume ◽  
Baking Quality ◽  
Flour Yield ◽  
Glutenin Protein ◽  
Dough Development Time ◽  
Sedimentation Value

Simple correlations between a number of quality parameters, their heritabilities and an evaluation of the best combination of these parameters to predict loaf volume, were determined from data for 26 cultivars of spring wheat grown at four locations in Western Canada. Highly significant correlations between remix loaf volume and each of Zeleny sedimentation value, farinograph dough development time, farinograph mixing tolerance index, proportion of residue protein, and glutenin protein were obtained. Sedimentation value, 1000 kernel weight, mixing tolerance index, flour yield, farinograph absorption, and remix loaf volume all had high heritabilities over the four locations. Using the simple correlations as a guide, regression formulae yielding the best predictions of remix loaf volume were developed. Residue protein content, Zeleny sedimentation value, and farinograph dough development time provided the most useful information for predicting baking quality by a single test.

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

EVALUATION OF SCREENING TESTS FOR QUALITY OF BREAD WHEAT

1971 ◽  
Vol 51 (6) ◽  
pp. 449-455 ◽  
Author(s):  
R. J. BAKER ◽  
A. B. CAMPBELL
Keyword(s):  
Triticum Aestivum ◽  
Nitrogen Content ◽  
Development Time ◽  
Triticum Aestivum L ◽  
Screening Tests ◽  
Loaf Volume ◽  
Breeding Programs ◽  
Flour Yield ◽  
Sedimentation Value

Eight tests designed to screen early generations of wheat, Triticum aestivum L. em Thell., for breadmaking quality were evaluated. Sedimentation value, mixograph development time, centrifuge absorption and nitrogen content (in that order) were the most repeatable of the eight tests. Flour yield and starch damage were least repeatable. The heritability of mixograph development time was low because of a significant cultivar by year interaction. Nitrogen content, sedimentation value and centrifuge absorption were shown to contain all the information about loaf volume and farinograph absorption that was available in the set of eight tests. It was therefore concluded that nitrogen content, sedimentation value and centrifuge absorption are the most useful of the eight tests for purposes of plant breeding programs.

scholarly journals Agronomic, physiological and molecular characterization of spring wheat (Triticum aestivum L.) accessions for drought tolerance

2020 ◽  
Vol 49 (1) ◽  
pp. 29-38
Author(s):  
Muhammad Qadir Ahmad ◽  
Muhammad Farooq Naseer ◽  
Abdul Qayyum ◽  
Sami Ul-Allah ◽  
Waqas Malik ◽  
...  
Keyword(s):  
Drought Stress ◽  
Molecular Characterization ◽  
Genetic Association ◽  
Spring Wheat ◽  
Phenotypic Diversity ◽  
Grain Filling ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Chlorophyll Contents

A comprehensive study was conducted to investigate (i) the effect of drought stress on genetic association among various yield traits and (ii) molecular and phenotypic diversity in the selected spring wheat accessions. A panel of 24 spring wheat accessions was evaluated under normal irrigation and drought stress. Data were collected for chlorophyll contents, canopy temperature, days to heading, grain filling period, relative water content, plant height, peduncle length, number of kernels per spike, 1000-kernel weight and grain yield. Analysis of variance depicted significant differences for genotypes (G), effect of treatment (T) and interaction between T and G. Correlation analysis revealed that genetic association among various traits was stronger in normal treatment than water stressed. The Biplot analysis grouped the genotypes into tolerant and susceptible groups. Molecular characterization of tolerant and susceptible genotypes was done with 14 ISSR markers. ISSR primers revealed a mean of 0.63 genetic similarities among genotypes. Polymorphism information content (PIC) values varied from 0.24 to 0.49. The genetic diversity in selected germplasm can be used to develop drought tolerant lines considering the changing pattern of traits association under drought stress.

W98616, a white-seeded spring wheat with increased preharvest sprouting

2002 ◽  
Vol 82 (1) ◽  
pp. 129-131 ◽  
Author(s):  
Pierre Hucl ◽  
Maria Matus-Cádiz
Keyword(s):  
Spring Wheat ◽  
Wheat Cultivar ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Preharvest Sprouting ◽  
White Wheat ◽  
Germplasm Line ◽  
Sprouting Resistance ◽  
Hard White Wheat ◽  
Preharvest Sprouting Resistance

White-seeded spring wheat germplasm line W98616 was selected for improved levels of preharvest sprouting resistance. W98616 has levels of seed dormancy comparable to Columbus, a red-seeded sprouting-resistant cultivar. W98616 has similar test weight, kernel weight, maturity, plant height, grain protein, and kernel hardness, but is lower yielding and 2 d later heading relative to BW264, a hard white wheat cultivar. Key words: Triticum aestivum L., germplasm, white spring wheat, preharvest sprouting resistance

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