Inheritance of resistance to stripe rust in winter wheat cultivars Aquileja and Xian Nong 4

2007 ◽  
Vol 48 (1) ◽  
pp. 43-46 ◽  
Author(s):  
Jing Feng ◽  
Zhongjun Zhang ◽  
Guohui Li ◽  
Yu Zhou ◽  
Haihong Wang ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Stripe Rust ◽  
Inheritance Of Resistance ◽  
Wheat Cultivars ◽  
Winter Wheat Cultivars

scholarly journals Evaluation of Stripe Rust Resistance in Hungarian Winter Wheat Cultivars in China

2019 ◽  
Vol 47 (4) ◽  
pp. 636-644
Author(s):  
D. Huang ◽  
H. Zhang ◽  
M. Tar ◽  
Y. Zhang ◽  
F. Ni ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Stripe Rust ◽  
Rust Resistance ◽  
Stripe Rust Resistance ◽  
Wheat Cultivars ◽  
Winter Wheat Cultivars

scholarly journals Wild grasses as the reservoirs of infection of rust species for winter soft wheat in the Northern CaucasusWild grasses as the reservoirs of infection of rust species for winter soft wheat in the Northern Caucasus

2021 ◽  
Vol 25 (6) ◽  
pp. 638-646
Author(s):  
E. I. Gultyaeva ◽  
L. A. Bespalova ◽  
I. B. Ablova ◽  
E. L. Shaydayuk ◽  
Zh. N. Khudokormova ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Common Wheat ◽  
Stripe Rust ◽  
Weather Conditions ◽  
Soft Wheat ◽  
Wheat Cultivars ◽  
North Caucasus ◽  
The North ◽  
Winter Wheat Cultivars ◽  
Wild Cereals

Common winter wheat is the main grain crop cultivated in the North Caucasus. Rust disease damage is one of the factors limiting wheat productivity. There are three species of rust in the region: leaf (Puccinia triticina), stem (P. graminis) and stripe rust (P. striiformis), and their significance varies from year to year. The most common is leaf rust, but in the last decade the frequency of its epiphytotic development has significantly decreased. At the same time, an increase in the harmfulness of stripe rust (P. striiformis) is noted. Stem rust in the region is mainly absent or observed at the end of the wheat growing season to a weak degree. Only in some years with favorable weather conditions its mass development is noted on susceptible cultivars. It is believed that the sources of infection with rust species in the North Caucasus are infested soft wheat crops, wild-growing cereals and exodemic infection carried by air currents from adjacent territories. In the North Caucasus, forage and wild grasses are affected by Puccinia species almost every year. Depending on weather conditions, the symptom expression is noted from late September to December and then from late February to May–June. Potentially, an autumn infection on grasses can serve as a source for infection of winter soft wheat cultivars sown in October. The purpose of these studies is to characterize the virulence of P. triticina, P. graminis, P. striiformis on wild cereals and to assess the specialization of causative agents to winter wheat in the North Caucasus. Infectious material represented by leaves with urediniopustules of leaf, stem and stripe rusts was collected from wild cereals (Poa spp., Bromus spp.) in the Krasnodar Territory in October–November 2019. Uredinium material from P. triticina, P. striiformis, and P. graminis was propagated and cloned. Monopustular Puccinia spp. isolates were used for virulence genetics analysis. In experiments to study the specialization of rust species from wild-growing cereals on common wheat, 12 winter cultivars were used (Grom, Tanya, Yuka, Tabor, Bezostaya 100, Yubileynaya 100, Vekha, Vassa, Alekseich, Stan, Gurt, Bagrat). These cultivars are widely cultivated in the North Caucasus region and are characterized by varying degrees of resistance to rust. Additionally, wheat material was inoculated with Krasnodar populations of P. triticina, P. striiformis, P. graminis from common wheat. In the virulence analysis of P. triticina on cereal grasses, four phenotypes (races) were identified: MCTKH (30 %), TCTTR (30 %), TNTTR (25 %), MHTKH (15 %), and five were identified in P. graminis (RKMTF (60 %), TKTTF, RKLTF, QKLTF, LHLPF (10 % each). Among P. striiformis isolates, three phenotypes were identified using the International and European sets of differentiating cultivars – 111E231 (88 %), 111E247 (6 %) and 78E199 (6 %). Using isogenic Avocet lines, 3 races were also identified, which differed among themselves in virulence to the Yr1, Yr11, Yr18 genes (with the prevalence of virulent ones (94 %)). Composite urediniums’ samples (a mixture of all identified races) of grass rust of each species were used to inoculate winter wheat cultivars. The most common winter wheat cultivars (75 %) were characterized by a resistant response when infected with P. graminis populations from common wheat and cereal grasses. All these cultivars were developed using donors of the rye translocation 1BL.1RS, in which the Lr26, Sr31, and Yr9 genes are localized. The number of winter wheat cultivars resistant to leaf rust in the seedling phase was lower (58 %). At the same time, all the studied cultivars in the seedling phase were susceptible to P. striiformis to varying degrees. The virulence analysis of the leaf, stem and stripe rust populations did not reveal significant differences in the virulence of the pathogens between wild-growing cereals and soft wheat. Urediniomaterial of all studied rust species successfully infested soft wheat cultivars. The results obtained indicate that grasses are rust infection reservoirs for common wheat crops in the North Caucasus.

scholarly journals Inheritance of Resistance to Stagonospora nodorum Leaf Blotch in Kansas Winter Wheat Cultivars

Plant Disease ◽  
2004 ◽  
Vol 88 (5) ◽  
pp. 530-536 ◽  
Author(s):  
Yong-ki Kim ◽  
Gina L. Brown-Guedira ◽  
Thomas S. Cox ◽  
William W. Bockus
Keyword(s):  
Winter Wheat ◽  
Dominant Gene ◽  
Wheat Breeding ◽  
Stagonospora Nodorum ◽  
Inheritance Of Resistance ◽  
Single Dominant Gene ◽  
Wheat Cultivars ◽  
Stagonospora Nodorum Blotch ◽  
Winter Wheat Cultivars ◽  
The Cross

Stagonospora nodorum blotch can cause serious yield and quality losses of wheat (Triticum aestivum) in many countries worldwide. Although there are other control methods, host resistance is the most desirable. Three recent Kansas winter wheat cultivars (Betty, Heyne, and 2163) have been developed with moderate levels of resistance to the leaf phase of Stagonospora nodorum blotch. To determine inheritance of resistance and allelism, these cultivars were crossed with one of three susceptible lines (Larned, KS96WGRC39, or Newton) and intercrossed in all possible combinations, including reciprocals. The parents, F1, F2, and F3 generations were tested for resistance to S. nodorum in the greenhouse as 4-week-old seedlings. Cytoplasmic effects were not detected in any cross. The mean levels of infection in the F1s of the two crosses Betty × Larned and Heyne × KS96WGRC39 indicated resistance was dominant. The observed phenotypic ratios of F2 plants for both crosses were not significantly different from the expected ratio for a single dominant gene. The ratio observed for F3 lines in the Betty × Larned cross fit that expected for a single dominant gene. However, the observed ratio of the F3 lines from the cross Heyne × KS96WGRC39 did not fit the ratio expected for a single dominant gene. The allelism test for Betty and Heyne indicated that they have different resistance genes. The F1 mean rating of the cross 2163 × Newton was intermediate between the two parents, indicating the absence of dominance for resistance in 2163. The phenotypic ratio observed in the F2 plants from this cross did not fit the ratio expected for a single dominant gene. The simple genetic control of resistance in cv. Betty makes it a useful source of resistance for wheat breeding programs.

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