Constraints on breeding for disease resistance in commercially competitive wheat cultivars

Martens, G., Lamari, L., Grieger, A., Gulden, R. H. and McCallum, B. 2014. Comparative yield, disease resistance and response to fungicide for forty-five historic Canadian wheat cultivars. Can. J. Plant Sci. 94: 371–381. Forty-five historic Canadian spring wheat cultivars, ranging from Red Fife (1870) to modern cultivars, were compared for yield and disease resistance in field trials from 2007 to 2010. A split-plot design was used to test yield, leaf rust and Fusarium head blight resistance, with or without a fungicide application. Older cultivars were generally lower yielding and more leaf rust susceptible than modern cultivars; this difference was greatest in 2007 and 2010 under heavier leaf rust. Response to fungicide application was highest in 2007 and 2010. In 2008, leaf rust was very low, and fungicide application had a slightly negative effect on yield overall. Cultivars that have good leaf rust resistance, such as Pasqua, AC Minto, and 5600 HR, had a negligible response to fungicide, whereas older, susceptible cultivars had a larger response. Fusarium head blight levels were too low to compare the cultivars. The highest-yielding cultivars in the untreated plots were AC Domain, 5500HR, AC Cora, Roblin and Barrie, whereas AC Cora, AC Domain, McKenzie, Roblin and AC Intrepid were the highest yielding in the fungicide-treated plots. AC Domain, AC Barrie and Roblin were among the most popular wheat cultivars in Manitoba, in terms of seeded area from the early 1990s to 2009.

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Allelic variation and effects of 16 candidate genes on disease resistance in western Canadian spring wheat cultivars

Molecular Breeding ◽

10.1007/s11032-017-0627-7 ◽

2017 ◽

Vol 37 (3) ◽

Cited By ~ 5

Author(s):

Enid Perez-Lara ◽

Kassa Semagn ◽

Hua Chen ◽

Van Anh Tran ◽

Izabela Ciechanowska ◽

...

Keyword(s):

Disease Resistance ◽

Candidate Genes ◽

Spring Wheat ◽

Allelic Variation ◽

Wheat Cultivars

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Developing of transgenic wheat cultivars for improved disease resistance

Journal of Applied Biology & Biotechnology ◽

10.7324/jabb.2018.60206 ◽

2018 ◽

Keyword(s):

Disease Resistance ◽

Transgenic Wheat ◽

Wheat Cultivars

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Disease resistance in winter wheat cultivars and effects of foliar fungicides on yield

Proceedings of the New Zealand Plant Protection Conference ◽

10.30843/nzpp.1992.45.11227 ◽

1992 ◽

Vol 45 ◽

pp. 75-78

Author(s):

M.G. Cromey ◽

R. Hanson

Keyword(s):

Disease Resistance ◽

Winter Wheat ◽

Wheat Cultivars ◽

Winter Wheat Cultivars

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Disease Resistance and Genes in 146 Wheat Cultivars (Lines) from the Huang-Huai-Hai Region of China

Agronomy ◽

10.3390/agronomy11061025 ◽

2021 ◽

Vol 11 (6) ◽

pp. 1025

Author(s):

Kangjie Ma ◽

Xiaoyan Li ◽

Ying Li ◽

Zihao Wang ◽

Bingjie Zhao ◽

...

Keyword(s):

Disease Resistance ◽

Powdery Mildew ◽

Fusarium Head Blight ◽

Resistance Gene ◽

Stripe Rust ◽

Adult Plant ◽

Wheat Cultivars ◽

Head Blight ◽

Adult Plant Stage ◽

Plant Stage

Wheat stripe rust, powdery mildew, and Fusarium head blight (FHB) are the three most important diseases in wheat worldwide. Growing resistant cultivars is the most economic and effective method to control these diseases. To assess the disease resistance of commercial wheat cultivars and regional trial wheat lines in the Huang-Huai-Hai region of China, 146 wheat entries were inoculated with the Chinese prevalent Puccinia striiformis f. sp. tritici (Pst) races CYR32, CYR33, CYR34, and Blumeria graminis f. sp. tritici (Bgt) isolate E09 under controlled greenhouse conditions, respectively; these entries were also tested with the mixed Pst races, Bgt and FHB isolates at adult-plant stage in the field, respectively. The results showed that 108 (73.97%), 83 (56.85%), 99 (67.81%), and 22 (15.07%) entries were resistant to CYR32, CYR33, CYR34, and E09 at the seedling stage, respectively; 102 (69.86%), 24 (16.44%), and 2 (1.37%) entries were resistant to stripe rust, powdery mildew, and Fusarium head blight at the adult-plant stage, respectively. Additionally, the possible resistance gene(s) in these entries were postulated by the closely linked markers of stripe rust resistance genes Yr5, Yr9, Yr10, Yr15, Yr17, Yr18, Yr26, powdery mildew resistance gene Pm21, and Fusarium head blight resistance gene Fhb1. Combined with disease resistance and molecular markers tests, 62, nine, and three wheat entries were postulated to carry the Yr9, Yr17, Yr26 gene, respectively, and no entries contained Yr5, Yr10, Yr15, Yr18, Pm21, and Fhb1 gene. This study laid a theoretical foundation for rational utilization of these entries and gene in wheat breeding programs and disease control.

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