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Journal articles on the topic 'Tritici'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Zhao, J., X. J. Wang, C. Q. Chen, L. L. Huang, and Z. S. Kang. "A PCR-Based Assay for Detection of Puccinia striiformis f. sp. tritici in Wheat." Plant Disease 91, no. 12 (2007): 1669–74. http://dx.doi.org/10.1094/pdis-91-12-1669.

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Monitoring the pathogenic fungus of wheat stripe rust, Puccinia striiformis f. sp. tritici, plays a key role in effective control of the disease. In the present study, we developed a specific and sensitive polymerase chain reaction (PCR) assay for detecting the pathogen in wheat (Triticum aestivum) leaves. A pair of primers (PSF and PSR) was designed based on the internal transcribed spacer (ITS) region sequence of P. striiformis f. sp. tritici. PCR products that were amplified with universal primers ITS1 and ITS4 were cloned into pGEM-T Easy vectors and sequenced. The ITS sequence was compare

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2

Nielsen, J. "Ustilago spp. pathogenic on Aegilops. II. Ustilago tritici." Canadian Journal of Botany 63, no. 4 (1985): 765–71. http://dx.doi.org/10.1139/b85-097.

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Examination of 53 herbarium specimens of Ustilago spp. collected on Aegilops L. showed that U. passerinii, U. schumanniana, U. ehrenbergiana, and U. aegilopidis (sic) are synonyms of U. tritici. From published descriptions it was concluded that U. ugamica, too, is synonymous with U. tritici. Morphology and hybridization studies showed that eight field collections of Ustilago from Aegilops cylindrica, A. kotschyi, A. lorentii, A. tauschii, and A. triuncialis from Iran, Iraq, and the U.S.S.R. are U. tritici. The large proportion of U. tritici among herbarium specimens and field collections indic

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3

Пахолкова, Елена В., та Н. Н. Сальникова. "Видовой состав возбудителей септориоза на пшенице на территории России и факторы, его определяющие". Аграрная Россия, № 10 (28 жовтня 2024): 13–19. http://dx.doi.org/10.30906/1999-5636-2024-10-13-19.

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Проведен многолетний (1986 – 2023 гг.) мониторинг видового состава возбудителей септориоза пшеницы на территории 9 регионов России. Проанализировано более 3500 образцов разных сортов пшеницы, на которых обнаружены 3 основных вида септории: Z. tritici, P. nodorum и P. avenae triticea. Выявлено, что в Северо-Кавказском, Центрально-Черноземном, Поволжском регионах и Калининградской области доминирует вид Z. tritici с частотой встречаемости от 61,6 до 83,5 %. В Центральном, Волго-Вятском и Северо-Западном регионах соотношение видов Z. tritici и P. nodorum близко к 1:1. В Северо-Восточных регионах

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4

Gao, L., H. X. Yu, X. H. Kang, et al. "Development of SCAR Markers and an SYBR Green Assay to Detect Puccinia striiformis f. sp. tritici in Infected Wheat Leaves." Plant Disease 100, no. 9 (2016): 1840–47. http://dx.doi.org/10.1094/pdis-06-15-0693-re.

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Stripe rust, caused by the pathogenic fungus Puccinia striiformis f. sp. tritici, is an important disease of wheat worldwide. A rapid and reliable detection of the pathogen in latent infected wheat leaves is useful for accurate and early forecast of outbreaks and timely application of fungicides for managing the disease. Using the previously reported primer pair Bt2a/Bt2b, a 362-bp amplicon was obtained from P. striiformis f. sp. tritici and a 486-bp amplicon was obtained from both P. triticina (the leaf rust pathogen) and P. graminis f. sp. tritici (the stem rust pathogen). Based on the seque

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5

Knott, D. R. "The transfer of stem rust resistance from the Ethiopian durum wheat St. 464 to common wheat." Canadian Journal of Plant Science 76, no. 2 (1996): 317–19. http://dx.doi.org/10.4141/cjps96-054.

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Two genes for stem rust (Puccinia graminis Pers. f. sp. tritici Eriks. & Henn.) resistance were transferred from the Ethiopian durum wheat (Triticum turgidum L) accession St. 464 to Thatcher and Prelude/8* Marquis common wheat. One gene was shown by monosomic analysis to be on chromosome 4B and proved to be Sr7a. Monosomic analysis failed to locate the second gene. It is only partially dominant and conditions resistance to a range of races. Key words: Rust resistance, stem rust, wheat, Puccinia graminis tritici, Triticum aestivum, Triticum turgidum

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6

De Pace, Ciro, Marina Pasquini, Patrizia Vaccino, et al. "Deployment of either a whole or dissected wild nuclear genome into the wheat gene pool meets the breeding challenges posed by the sustainable farming systems." Plant Genetic Resources 9, no. 2 (2011): 352–56. http://dx.doi.org/10.1017/s1479262111000141.

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Deploying whole and dissected nuclear genome of wild Triticeae species in the homoeologous wheat genetic background through inter-specific hybridization and introgression is a lower cost and effective option to prepare wheat germplasm with unexploited genes for disease resistance and enhanced grain yield and quality traits. The whole nuclear genomes of Dasypyrum villosum (Dv) and T. turgidum var durum have been combined, and an homoploid derivative of the original amphiploid displayed typical ‘farro’ spike morphology, tough rachis and the adaptive traits of Dv such as high resistance to diseas

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7

Hagerty, Christina H., Ann M. Klein, Catherine L. Reardon, et al. "Baseline and Temporal Changes in Sensitivity of Zymoseptoria tritici Isolates to Benzovindiflupyr in Oregon, U.S.A., and Cross-Sensitivity to Other SDHI Fungicides." Plant Disease 105, no. 1 (2021): 169–74. http://dx.doi.org/10.1094/pdis-10-19-2125-re.

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Zymoseptoria tritici is the causal agent of Septoria tritici blotch (STB), a disease of wheat (Triticum aestivum) that results in significant yield loss worldwide. Z. tritici’s life cycle, reproductive system, effective population size, and gene flow put it at high likelihood of developing fungicide resistance. Succinate dehydrogenase inhibitor (SDHI) fungicides (FRAC code 7) were not widely used to control STB in the Willamette Valley until 2016. Field isolates of Z. tritici collected in the Willamette Valley at dates spanning the introduction of SDHI (2015 to 2017) were screened for sensitiv

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8

DEPAUW, R. M., T. F. TOWNLEY-SMITH, T. N. McCAIG, and J. M. CLARKE. "LAURA HARD RED SPRING WHEAT." Canadian Journal of Plant Science 68, no. 1 (1988): 203–6. http://dx.doi.org/10.4141/cjps88-020.

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Laura hard red spring wheat (Triticum aestivum L.) combines higher grain yield than currently registered cultivars with very good bread-making properties. Laura has resistance to prevalent races of leaf rust caused by Puccinia recondita Rob. ex. Desm. f. sp. tritici and stem rust caused by P. graminis Pers. f. sp. tritici Eriks. and E. Henn. It was registered on 23 December 1986. Breeder seed of Laura will be maintained by Agriculture Canada Experimental Farm, Indian Head, Saskatchewan.Key words: Wheat, Triticum aestivum L., cultivar description

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9

Ben-David, Roi, Ryan Parks, Amos Dinoor, et al. "Differentiation Among Blumeria graminis f. sp. tritici Isolates Originating from Wild Versus Domesticated Triticum Species in Israel." Phytopathology® 106, no. 8 (2016): 861–70. http://dx.doi.org/10.1094/phyto-07-15-0177-r.

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Israel and its vicinity constitute a center of diversity of domesticated wheat species (Triticum aestivum and T. durum) and their sympatrically growing wild relatives, including wild emmer wheat (T. dicoccoides). We investigated differentiation within the forma specialis of their obligate powdery mildew pathogen, Blumeria graminis f. sp. tritici. A total of 61 B. graminis f. sp. tritici isolates were collected from the three host species in four geographic regions of Israel. Genetic relatedness of the isolates was characterized using both virulence patterns on 38 wheat lines (including 21 resi

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10

Ranabhat, Nar B., John P. Fellers, Myron A. Bruce, and Jessica L. Shoup Rupp. "High-Throughput Oxford Nanopore Sequencing Unveils Complex Viral Population in Kansas Wheat: Implications for Sustainable Virus Management." Viruses 17, no. 1 (2025): 126. https://doi.org/10.3390/v17010126.

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Wheat viruses are major yield-reducing factors, with mixed infections causing substantial economic losses. Determining field virus populations is crucial for effective management and developing virus-resistant cultivars. This study utilized the high-throughput Oxford Nanopore sequencing technique (ONT) to characterize wheat viral populations in major wheat-growing counties of Kansas from 2019 to 2021. Wheat leaves exhibiting virus-like symptoms were collected, total RNA was extracted, and cDNA libraries were prepared using a PCR-cDNA barcoding kit, then loaded onto ONT MinION flow cells. Seque

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11

Wamalwa, Mercy N., Ruth Wanyera, Julian Rodriguez-Algaba, et al. "Distribution of Puccinia striiformis f. sp. tritici Races and Virulence in Wheat Growing Regions of Kenya from 1970 to 2014." Plant Disease 106, no. 2 (2022): 701–10. http://dx.doi.org/10.1094/pdis-11-20-2341-re.

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Stripe rust, caused by the fungal pathogen Puccinia striiformis f. sp. tritici, is a major threat to wheat (Triticum spp.) production worldwide. The objective of this study was to determine the virulence of P. striiformis f. sp. tritici races prevalent in the main wheat growing regions of Kenya, which includes Mt. Kenya, Eastern Kenya, and the Rift Valley (Central, Southern, and Northern Rift). Fifty P. striiformis f. sp. tritici isolates collected from 1970 to 1992 and from 2009 to 2014 were virulence phenotyped with stripe rust differential sets, and 45 isolates were genotyped with sequence

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12

Knott, D. R. "The mode of inheritance of a type of dwarfism in common wheat." Genome 32, no. 5 (1989): 932–33. http://dx.doi.org/10.1139/g89-533.

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A type of dwarfism found in crosses involving the wheat (Triticum aestivum L.) cultivar Webster and a stem rust (Puccinia graminis tritici Erik. &Henn.) susceptible line, LMPG, proved to be due to a dominant gene from cv. Webster and a recessive gene from LMPG. The dominant gene is closely linked to the gene Sr30, which conditions stem rust resistance in cv. Webster and is on chromosome 5D. The dwarf plants have short, dark green, stiff leaves and rarely develop more than two leaves before dying.Key words: dwarfism, Triticum aestivum, Puccinia graminis tritici, stem rust.

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13

Tosa, Y., T. Akiyama, and H. Ogura. "Cytological aspects of interactions between formae speciales of Erysiphe graminis and genera of gramineous plants, and their evolutionary implications." Canadian Journal of Botany 68, no. 6 (1990): 1249–53. http://dx.doi.org/10.1139/b90-158.

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The progress of infection in leaves of wheat (Triticum aestivum), rye (Secale cereale), wheatgrass (Agropyron tsukushiense), barley (Hordeum vulgare), and oat (Avena sativa) inoculated with Erysiphe graminis f.sp. tritici, secalis, agropyri, and hordei was observed using a fluorescence microscope. Relative compatibility of each host–parasite combination was estimated by the incidence of cell wall penetration. Formae speciales tritici, secalis, and agropyri were highly compatible with any accession of wheat, rye, and wheatgrass, but less compatible with barley. On the other hand, f.sp. hordei w

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14

Eizenga, G. C. "Locating the Agropyron segment in wheat–Agropyron transfer no. 12." Genome 29, no. 2 (1987): 365–66. http://dx.doi.org/10.1139/g87-061.

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Twelve lines of wheat (Triticum aestivum L.) were originally identified as having a segment of Agropyron elongatum chromatin carrying a gene for resistance to leaf rust (Puccinia recondita tritici) transferred to wheat chromosome 7D. By studying the chromosome pairing of one of these lines, transfer no. 12, with telosomes 7AL, 7AS, 7BL, 7BS, 7DL, 7DS, and 7AgS, it was determined that the Agropyron chromatin was carried on the long arm of wheat chromosome 7A rather than 7D. This determination was confirmed by acetocarmine–N-banding. Key words: Triticum aestivum, Agropyron elongatum, transfer li

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15

Stock, W. S., A. L. Brûlé-Babel, and G. A. Penner. "A gene for resistance to a necrosis-inducing isolate of Pyrenophora tritici-repentis located on 5BL of Triticum aestivum cv. Chinese Spring." Genome 39, no. 3 (1996): 598–604. http://dx.doi.org/10.1139/g96-075.

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Several sources of high-level resistance to tan spot caused by Pyrenophora tritici-repentis have been identified in hexaploid wheat (Triticum aestivum L.). This study was conducted to determine the number and chromosome location of a gene(s) in the cultivar Chinese Spring (CS) that confers resistance to a tan necrosis inducing isolate (nec+chl−) of P. tritici-repentis, 86-124, and insensitivity to Ptr necrosis toxin. Reciprocal crosses were made between CS (resistant–insensitive) and 'Kenya Farmer' (KF) (susceptible–sensitive). Analysis of the CS/KF F1and F2 populations and F2-derived F3 famil

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16

Дубекова, Салтанат, Амангелді Сарбаев, Минура Есімбекова та Айдархан Есеркенов. "КҮЗДІК БИДАЙ СОРТҮЛГІЛЕРІНІҢ ТАТ АУРУЫ ҚОЗДЫРҒЫШТАРЫНА (P. STRIIFORMIS F. SP. TRITICI; P. TRITICINA F. SP. TRITICI) ТӨЗІМДІЛІГІН ИММУНОЛОГИЯЛЫҚ БАҒАЛАУ". Izdenister natigeler, № 4 (100) (6 грудня 2023): 110–20. http://dx.doi.org/10.37884/4-2023/13.

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Дәнді дақылдардың аса қауіпті ауру қоздырғыштарының, климаттың жаһандық өзгеру жағдайында, дамып-таралу ареалының өзгеріп отыруы және оның салдарынан індет зияндылығының артуы өте қауіпті. Мұндай жағдайда, оңтүстік шығыс Қазақстан аумағында, күздік бидай егістігіндегі аурулардың басым түрлері – сары тат (P. striiformis f. sp. tritici) және қоңыр тат (P. triticina f. sp. tritici) фитопатогендерін бақылау маңызды. Фитопатогендердің дамуына қолайлы жылдарда масақ өнімділігі мен астық сапасының күрт төмендеуі байқалады. Ауру қоздырғыштарының жаңа агрессивті түрлері, жоғары әлеуетті, құнды дәнді да

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17

Singh, P. K., M. Mergoum, S. Ali, T. B. Adhikari, and G. R. Hughes. "Genetic Analysis of Resistance to Pyrenophora tritici-repentis Races 1 and 5 in Tetraploid and Hexaploid Wheat." Phytopathology® 98, no. 6 (2008): 702–8. http://dx.doi.org/10.1094/phyto-98-6-0702.

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Tan spot of wheat, caused by the fungus Pyrenophora tritici-repentis, is a destructive disease worldwide that can lead to serious losses in quality and quantity of wheat grain production. Resistance to multiple races of P. tritici-repentis was identified in a wide range of genetically diverse genotypes, including three different species Triticum aestivum (AABBDD), T. spelta (AABBDD), and T. turgidum (AABB). The major objectives of this study were to determine the genetic control of resistance to P. tritici-repentis races 1 and 5 in 12 newly identified sources of resistance. The parents, F1, F2

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18

Pilch, Józef. "Wykorzystanie genów z gatunków diploidalnych, tetraploidalnych i heksaploidalnych pszenicy Triticum L. w odmianach pszenicy heksaploidalnej Triticum aestivum L." Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin, no. 262 (December 29, 2011): 3–24. http://dx.doi.org/10.37317/biul-2011-0001.

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W pracy dokonano przeglądu literatury w zakresie wykorzystania gatunków diploidalnych, tetraploidalnych i heksaploidalnych rodzaju Triticum L. w ulepszaniu odmian pszenicy Triticum aestivum L. Przedstawiono źródła korzystnych cech i dokonane introgresje 87 genów w odmianach pszenicy zwyczajnej, oraz podano lokalizację chromosomową. W genomie A, B i D odmian T. aestivum L. wprowadzono odpowiednio 36, 35 i 11 obcych genów. Introgresje te doprowadziły do ulepszenia cech pszenicy T. aestivum L., głównie odporności na patogeny zbożowe. Najwiecej genów obcych (23) warunkuje odporność na mączniaka pr

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19

Duguid, S. D., and A. L. Brûlé-Babel. "Inheritance and interaction of spring wheat (Triticum aestivum L.) resistance to Race 2 and Race 3 of Pyrenophora tritici-repentis (Died.) Drechs." Canadian Journal of Plant Science 81, no. 3 (2001): 527–33. http://dx.doi.org/10.4141/p00-046.

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Tan spot is a residue-borne leaf spotting disease caused by the fungal pathogen Pyrenophora tritici-repentis. An understanding of the inheritance of resistance is required to build a strategy for incorporating tan spot resistance into commercial cultivars of wheat. The objectives of this study were to determine the inheritance of host resistance to isolates of races 2 (a necrosis-inducing race) and 3 (a chlorosis-inducing race) of P. tritici-repentis. Crosses were made between seven wheat (Triticum aestivum) genotypes (Katepwa, BH1146, ST15, ST6, Erik, 6B1043, 6B367). Parents, F1, F2and F2-der

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20

Goriewa-Duba, Klaudia, Adrian Duba, Elżbieta Suchowilska, and Marian Wiwart. "An Analysis of the Genetic Diversity of Bread Wheat x Spelt Breeding Lines in Terms of Their Resistance to Powdery Mildew and Leaf Rust." Agronomy 10, no. 5 (2020): 658. http://dx.doi.org/10.3390/agronomy10050658.

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The main aim of this study was to analyze the genetic diversity of breeding lines derived from bread wheat and spelt (bread wheat cvs. Zebra, Torka and Kontesa; spelt breeding lines S10–S14) in terms of their resistance to infections caused by Blumeria graminis f. sp. tritici and Puccinia triticina Eriks. The genomes of all analyzed lines harbored the markers for Pm2a, Pm4b and Pm6a alleles, which confer resistance to the infection caused by B. graminis f. sp. tritici. The markers for Pm4c and Pm4a alleles were also identified in many objects. The high number of Pm markers was noted in the cro

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21

Molodchenkova, O. O., M. A. Lytvynenko, L. T. Mishchenko, et al. "Oxidizing and antioxidant processes in wheat plants infected by Septoria tritici Rob." Plant varieties studying and protection 18, no. 2 (2022): 90–97. http://dx.doi.org/10.21498/2518-1017.18.2.2022.265176.

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Purpose. Based on the study of oxidative and antioxidant processes in wheat plants (Triticum aestivum L.) in the earing phase at the infection by Septoria tritici Rob., identify the varietal features of changes in the level of hydrogen peroxide, the intensity of lipid peroxidation and the activity of antioxidant enzymes for development of biochemical methods for selection of disease-resistant plants. Methods. Field, spectrophotometric methods of biochemical characteristic determination, comparison, generalization. Statistical analysis of research results was carried out using the program Libr

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22

Fox, S. L., T. F. Townley-Smith, J. Kolmer, et al. "AC Splendor hard red spring wheat." Canadian Journal of Plant Science 87, no. 4 (2007): 883–87. http://dx.doi.org/10.4141/cjps06042.

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AC Splendor is a hard red spring wheat that meets the end-use quality and kernel visual distinguishability specifications of the Canada Western Red Spring class. AC Splendor was evaluated in the Central Bread Wheat Cooperative Registration Test in 1993, 1994 and 1995 and was found to be adapted to the wheat-growing regions of the Canadian prairies. In comparison to the check cultivars Neepawa, Katepwa, Columbus, Roblin and AC Majestic, AC Splendor grain yield was similar to Katepwa, Columbus and Roblin; however, AC Splendor exhibited earlier maturity by 2.8, 7.5 and 1.6 d, respectively. AC Spl

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23

Skolotneva, E. S., V. N. Kelbin, V. P. Shamanin, N. I. Boyko, V. A. Aparina, and E. A. Salina. "The gene Sr38 for bread wheat breeding in Western Siberia." Vavilov Journal of Genetics and Breeding 25, no. 7 (2021): 740–45. http://dx.doi.org/10.18699/vj21.084.

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Present-day wheat breeding for immunity exploits extensively closely related species from the family Triticeae as gene donors. The 2NS/2AS translocation has been introduced into the genome of the cultivated cereal Triticum aestivum from the wild relative T. ventricosum. It contains the Lr37, Yr17, and Sr38 genes, which support seedling resistance to the pathogens Puccinia triticina Eriks., P. striiformis West. f. sp. tritici, and P. graminis Pers. f. sp. tritici Eriks. & E. Henn, which cause brown, yellow, and stem rust of wheat, respectively. This translocation is present in the varieties

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Knott, D. R. "The inheritance of resistance to stem rust in 'K253', a hexaploid wheat with resistance from the tetraploid 'C.I. 7778'." Genome 30, no. 6 (1988): 854–56. http://dx.doi.org/10.1139/g88-137.

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The inheritance of stem rust (Puccinia graminis f. sp. tritici Eriks. and Henn.) resistance was studied in 'K253', a hexaploid wheat (Triticum aestivum L.) with resistance derived from a tetraploid wheat (T. turgidum L.). The studies indicated that 'K253' carries one dominant gene for good resistance to races 29 and 56 (probably Sr9e) and one recessive gene for moderate resistance to race 15B-1. In addition, some plants apparently carry a recessive gene for moderate resistance to race 56. Four different types of hexaploid near-isogenic lines were produced. One carried Sr9e and another the gene

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DYCK, P. L. "THE INHERITANCE OF LEAF RUST RESISTANCE IN WHEAT CULTIVARS KENYON AND BUCK MANANTIAL." Canadian Journal of Plant Science 69, no. 4 (1989): 1113–17. http://dx.doi.org/10.4141/cjps89-134.

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The genetics of resistance to leaf rust (Puccinia recondita f. sp. tritici) was studied in the two common wheat (Triticum aestivum) cultivars Kenyon and Buck Manantial. Kenyon was shown to have genes Lr13 and Lr16, the same gene combination that is present in the cultivar Columbus. Buck Manantial, the leaf-rust resistant donor parent of Kenyon, has seedling genes Lr13 (or an allele), Lr16 and Lr17, and two for adult-plant resistance, Lr13 and an unidentified gene.Key words: Leaf rust resistance, Puccinia recondita f. sp. tritici, wheat (hard red spring)

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Zhuk, I. V., A. P. Dmitriev, Ju V. Shylina, G. M. Lysova, and L. O. Kucherova. "The estimation of organic acids effectiveness as biotic elicitors via changes of endogenous peroxid content." Faktori eksperimental'noi evolucii organizmiv 26 (September 1, 2020): 202–6. http://dx.doi.org/10.7124/feeo.v26.1266.

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Aim. The usage of biotic elicitors for elicitation of defense responses may induce plant disease resistance and prevent increased environmental pollution by pesticides. Hydrogen peroxide is a well-known signal molecule for photosynthetic status and for stomatal movements, and systemic acquired resistance to pathogens in plants proposed to be dependent on H2O2. The aim of research was to analyze in field trials the effect of oxalic, ferulic and kojic acid on H2O2 content and winter wheat resistance against Septoria tritici. Methods. Content of endogenous H2O2 was measured in elicitor treated an

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27

See, Pao Theen, Caroline S. Moffat, Joseph Morina, and Richard P. Oliver. "Evaluation of a Multilocus Indel DNA Region for the Detection of the Wheat Tan Spot Pathogen Pyrenophora tritici-repentis." Plant Disease 100, no. 11 (2016): 2215–25. http://dx.doi.org/10.1094/pdis-03-16-0262-re.

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Tan spot or yellow (leaf) spot disease of wheat (Triticum spp.) is caused by Pyrenophora tritici-repentis, a necrotrophic fungal pathogen that is widespread throughout the main wheat-growing regions in the world. This disease is currently the single most economically important crop disease in Australia. In this study, a real-time quantitative polymerase chain reaction (qPCR) assay was developed as a diagnostic tool to detect the pathogen on wheat foliar tissue. A multicopy locus (PtrMulti) present in the P. tritici-repentis genome was assessed for its suitability as a qPCR probe. The primer pa

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Ali, Shaukat, Suraj Gurung, and Tika B. Adhikari. "Identification and Characterization of Novel Isolates of Pyrenophora tritici-repentis from Arkansas." Plant Disease 94, no. 2 (2010): 229–35. http://dx.doi.org/10.1094/pdis-94-2-0229.

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Tan spot, caused by Pyrenophora tritici-repentis, is an important foliar disease of wheat (Triticum aestivum) worldwide. In a preliminary study, P. tritici-repentis isolates from Arkansas were shown to vary in virulence relative to isolates from other regions of the United States. Therefore, the aim of the current study was to characterize both pathogenic and molecular variations in P. tritici-repentis isolates from Arkansas. The virulence of 93 isolates of P. tritici-repentis was evaluated by inoculating five differential wheat cultivars/lines. Based on virulence phenotypes, 63 isolates were

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Tamburic-Ilincic, Lily, Arend Smid, and Carl Griffey. "OAC Amber winter durum wheat." Canadian Journal of Plant Science 92, no. 5 (2012): 973–75. http://dx.doi.org/10.4141/cjps2011-164.

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Tamburic-Ilincic, L., Smid, A. and Griffey, C. 2012. OAC Amber winter durum wheat. Can. J. Plant Sci. 92: 973–975. OAC Amber is the first winter durum wheat (Triticum turgidum subsp. durum L.) cultivar registered for Ontario, Canada. It is an awned wheat with amber colored kernels, high test weight, kernel weight, and protein level with good winter hardiness. OAC Amber has good resistance to leaf rust (Puccinia triticina) but is moderately susceptible to powdery mildew (Blumeria graminis) and leaf blotch (Septoria tritici), and susceptible to Fusarium head blight (FHB). OAC Amber is well adapt

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Дубекова, Салтанат, Амангельды Сарбаев, Минура Есимбекова та Айдархан Есеркенов. "УСТОЙЧИВОСТЬ СОРТООБРАЗЦОВ ОЗИМОЙ ПШЕНИЦЫ К ГРИБНЫМ БОЛЕЗНЯМ - СЕЛЕКЦИЯ НА ИММУНИТЕТ". Izdenister natigeler, № 2-1 (special) (29 червня 2024): 65–73. http://dx.doi.org/10.37884/2-1-2024/540.

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На посевах озимой пшеницы наиболее опасными распространенными, грибными возбудителями являются желтая ржавчина (Puccinia striiformis f. sp. tritici), бурая ржавчина (Puccinia triticina f. sp. tritici), твердая головня (Tilletia tritici) и др. Данные возбудители поражают все надземные органы растений, что приводит к снижению качество семян и потере урожая. Возбудители листостебельных заболеваний отличаются высокой эпифитотийностью. Известно, что расы возбудителей ржавчины эволюционируют и появляются новые агрессивные патотипы. Вследствие этого, возделываемые, прежде устойчивые, сорта становятся

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31

Chu, C. G., S. S. Xu, J. D. Faris, E. Nevo, and T. L. Friesen. "Seedling Resistance to Tan Spot and Stagonospora nodorum Leaf Blotch in Wild Emmer Wheat (Triticum dicoccoides)." Plant Disease 92, no. 8 (2008): 1229–36. http://dx.doi.org/10.1094/pdis-92-8-1229.

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Tan spot and Stagonospora nodorum blotch (SNB), caused by Pyrenophora tritici-repentis and Stagonospora nodorum, respectively, are two destructive foliar diseases of wheat, causing significant yield reduction worldwide. The objective of this study was to evaluate 172 accessions of wild emmer wheat (Triticum dicoccoides) for seedling resistance to tan spot and SNB. All accessions were inoculated with P. tritici-repentis race 1 and a mixture of three diverse isolates of S. nodorum, respectively. The accessions were also evaluated for sensitivity to host-selective toxins (HSTs), including ToxA pr

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32

Kuzdraliński, Adam, Hubert Szczerba, Anna Kot, Agnieszka Ostrowska, Michał Nowak, and Marta Muszyńska. "Development and Application of a New PCR Method for Detection of Blumeria graminis f. sp. tritici." Journal of Molecular Microbiology and Biotechnology 28, no. 3 (2018): 137–46. http://dx.doi.org/10.1159/000494432.

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We developed new PCR assays that target beta-tubulin (<i>TUB2</i>) and 14 alpha-demethylase (<i>CYP51</i>) genes and used them for the species-specific detection of <i>Blumeria graminis</i> f. sp. <i>tritici</i> (<i>Bgt</i>). Based on fungi DNA sequences available in the NCBI (National Center for Biotechnology Information) GenBank database we developed simplex and duplex PCR assays. The specificities of the primer sets were evaluated using environmental samples of wheat leaves collected during the 2015/2016 growing season across Polan

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Ma, Lijie, Xinyu Kong, Jiaxing Qiao, Fei An, Xiaoping Hu, and Xiangming Xu. "Overwintering of Puccinia striiformis f. tritici on Winter Wheat at Varying Altitudes in Gansu and Qinghai Provinces." Plant Disease 100, no. 6 (2016): 1138–45. http://dx.doi.org/10.1094/pdis-09-15-1112-re.

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Stripe rust, caused by Puccinia striiformis f. tritici, is an important wheat disease in China. P. striiformis f. sp. tritici overwintering and nonoverwintering regions based on the temperature were described elsewhere ( Shi et al. 2005 ). The temperature limit for P. striiformis f. sp. tritici overwintering is derived from field observations. However, P. striiformis f. sp. tritici has recently been observed to overwinter at sites where overwintering is predicted to be unlikely. We studied P. striiformis f. sp. tritici overwintering across several sites in regions close to or further away from

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34

Ma, Z. Q., M. E. Sorrells, and S. D. Tanksley. "RFLP markers linked to powdery mildew resistance genes Pm1, Pm2, Pm3, and Pm4 in wheat." Genome 37, no. 5 (1994): 871–75. http://dx.doi.org/10.1139/g94-123.

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Near-isogenic lines (NILs) and their recurrent parent Chancellor (Cc) were used to identify restriction fragment length polymorphic markers linked to powdery mildew (Blumeria graminis (DC.) E.O. Speer f.sp. tritici) resistance genes Pm1, Pm2, Pm3, and Pm4 in wheat (Triticum aestivum L. em. Thell). By mapping these polymorphic markers in F2 progenies from crosses of the NILs with Cc, it was found that Pm1 cosegregated with a polymorphic locus detected by DNA probe CDO347; Pm2 was linked to a locus detected by probe BCD1871 with a distance of 3.5 cM; Pm3b was linked to a locus detected by probe

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35

Aoun, Meriem, James A. Kolmer, Matthew N. Rouse, et al. "Inheritance and Bulked Segregant Analysis of Leaf Rust and Stem Rust Resistance in Durum Wheat Genotypes." Phytopathology® 107, no. 12 (2017): 1496–506. http://dx.doi.org/10.1094/phyto-12-16-0444-r.

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Leaf rust, caused by Puccinia triticina, and stem rust, caused by P. graminis f. sp. tritici, are important diseases of durum wheat. This study determined the inheritance and genomic locations of leaf rust resistance (Lr) genes to P. triticina race BBBQJ and stem rust resistance (Sr) genes to P. graminis f. sp. tritici race TTKSK in durum accessions. Eight leaf-rust-resistant genotypes were used to develop biparental populations. Accessions PI 192051 and PI 534304 were also resistant to P. graminis f. sp. tritici race TTKSK. The resulting progenies were phenotyped for leaf rust and stem rust r

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Huang, Shuyi, Brian J. Steffenson, Hanan Sela, and Kathryn Stinebaugh. "Resistance of Aegilops longissima to the Rusts of Wheat." Plant Disease 102, no. 6 (2018): 1124–35. http://dx.doi.org/10.1094/pdis-06-17-0880-re.

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Stem rust (caused by Puccinia graminis f. sp. tritici), leaf rust (P. triticina), and stripe rust (P. striiformis f. sp. tritici) rank among the most important diseases of wheat worldwide. The development of resistant cultivars is the preferred method of controlling rust diseases because it is environmentally benign and also cost effective. However, new virulence types often arise in pathogen populations, rendering such cultivars vulnerable to losses. The identification of new sources of resistance is key to providing long-lasting disease control against the rapidly evolving rust pathogens. Th

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Thomas, J. B., R. M. DePauw, R. E. Knox, et al. "AC Foremost red spring wheat." Canadian Journal of Plant Science 77, no. 4 (1997): 657–60. http://dx.doi.org/10.4141/p96-194.

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AC Foremost, red-seeded spring wheat (Triticum aestivum L.), combines high grain yield with resistance to prevalent races of common bunt (caused by Tilletia laevis Kuhn in Rabenh. and T. caries (DC.) Tul. & C. Tul.), and loose smut except T9 (caused by Ustilago tritici (Pers.) Rostr. in a semidwarf, photoperiod insensitive background. AC Foremost has improved pre-harvest sprouting tolerance compared with Biggar, AC Taber, and Genesis; improved resistance to leaf rust (caused by Puccinia recondita Roberg ex Desmaz.) and leaf spots (caused by Septoria spp. and Pyrenophora tritici repentis (D

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38

Singh, R. P., and R. A. McIntosh. "Genetics and cytogenetics of resistance to Puccinia graminis tritici in three South African wheats." Genome 29, no. 4 (1987): 664–70. http://dx.doi.org/10.1139/g87-111.

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Resistance to Puccinia graminis tritici pathotype 34-1, 2, 3, 4, 5, 6, 7 in a South African wheat, W3757, was attributed to a dominant gene located in an alien (possibly Agropyron elongatum) chromosome that had substituted with wheat chromosome 6D. This gene, designated SrB, and present in two additional South African wheats, W3758 and W3759, conferred a high level of adult plant resistance to pathotypes used for field assessments. Because SrB is apparently different from other genes transferred from A. elongatum to wheat, its possible exploitation following translocation to a wheat chromosome

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39

Rouse, M. N., and Y. Jin. "Stem Rust Resistance in A-Genome Diploid Relatives of Wheat." Plant Disease 95, no. 8 (2011): 941–44. http://dx.doi.org/10.1094/pdis-04-10-0260.

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Wheat stem rust, caused by Puccinia graminis f. sp. tritici, has been effectively controlled through the use of genetic resistance. P. graminis f. sp. tritici race TTKSK (Ug99) possesses virulence to many resistance genes that have been used in wheat breeding worldwide. One strategy to aid breeders in developing resistant cultivars is to utilize resistance genes transferred from wild relatives to wheat. Stem rust resistance genes have previously been introgressed from Triticum monococcum to wheat. In order to identify additional resistance genes, we screened 1,061 accessions of T. monococcum a

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Singh, P. K., M. Mergoum, S. Ali, et al. "Evaluation of Elite Wheat Germ Plasm for Resistance to Tan Spot." Plant Disease 90, no. 10 (2006): 1320–25. http://dx.doi.org/10.1094/pd-90-1320.

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Tan spot, caused by Pyrenophora tritici-repentis, is a serious foliar disease of wheat (Triticum aestivum) in North America. Control of tan spot through management practices and fungicide application is possible; however, the use of resistant varieties is the most effective and economical means of controlling tan spot. This study was conducted to determine the disease reaction of 126 elite hard red spring, white, and durum wheat varieties and advanced breeding lines collected from the northern Great Plains of the United States and Canada to individual races/toxins of P. tritici-repentis. Seedl

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Rouse, M. N., R. Wanyera, P. Njau, and Y. Jin. "Sources of Resistance to Stem Rust Race Ug99 in Spring Wheat Germplasm." Plant Disease 95, no. 6 (2011): 762–66. http://dx.doi.org/10.1094/pdis-12-10-0940.

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Wheat stem rust (Puccinia graminis f. sp. tritici) race TTKSK (Ug99), with virulence to the majority of the world's wheat (Triticum aestivum) cultivars, has spread from Uganda throughout eastern Africa, Yemen, and Iran. The identification and spread of variants of race TTKSK with virulence to additional stem rust resistance genes has reminded breeders and pathologists of the danger of deploying major resistance genes alone. In order to protect wheat from this rapidly spreading and adapting pathogen, multiple resistance genes are needed, preferably from improved germplasm. Preliminary screening

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42

Švarta, Agrita, Gunita Bimšteine, Biruta Bankina, Jānis Kaņeps, and Zinta Gaile. "Impact of Fungicide Treatment Schemes on the Severity of Leaf Blotches in Winter Wheat." Rural Sustainability Research 49, no. 344 (2023): 27–34. http://dx.doi.org/10.2478/plua-2023-0004.

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Abstract The common control method of leaf blotches is the application of fungicides; however, the results of trials are inconsistent. The aim of the present study was to evaluate the impact of the fungicide treatment intensity on the severity of leaf blotches and to assess the correlation between the development of diseases and winter wheat (Triticum aestivum) yield in 2018–2021. The development of diseases was evaluated regularly. In this study, the severity of leaf blotches at the medium milk ripening (GS 75–77) was used. Tan spot dominated in 2018, 2019, and 2021, but Septoria tritici blot

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43

Malchikov, P. N., and M. G. Myasnikova. "Development, results and prospects of the spring durum wheat breeding in Russia (post-Soviet states)." Vavilov Journal of Genetics and Breeding 27, no. 6 (2023): 591–608. http://dx.doi.org/10.18699/vjgb-23-71.

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The article outlines a brief historical background on the introduction to cultivation, distribution and breeding of spring durum wheat in the steppe and forest-steppe regions of Eurasia (the countries of the former USSR: Russia, Ukraine, and Kazakhstan). The approaches and methodology for improving durum wheat during certain scientific selection periods are given. The features of the selection program implementation and the breeding scale expansion during the creation of breeding stations at the beginning of the XX century, after the end of the Great Patriotic War, in the second half of the XX

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44

O., O. Molodchenkova, A. Lytvynenko M., T. Mishchenko L., et al. "Oxidizing and antioxidant processes in wheat plants infected by Septoria tritici Rob." Plant varieties studying and protection 18, no. 2 (2022): 90–97. https://doi.org/10.21498/2518-1017.18.2.2022.265176.

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<strong>Purpose.</strong> Based on the study of oxidative and antioxidant processes in wheat plants (<em>Triticum aestivum</em> L.) in the earing phase at the infection by <em>Septoria tritici</em> Rob., identify the varietal features of changes in the level of hydrogen peroxide, the intensity of lipid peroxidation and the activity of antioxidant enzymes for development of biochemical methods for selection of disease-resistant plants. <strong>Methods.</strong> Field, spectrophotometric methods of biochemical characteristic determination, comparison, generalization

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45

Gruner, Katrin, Tobias Esser, Johanna Acevedo-Garcia, et al. "Evidence for Allele-Specific Levels of Enhanced Susceptibility of Wheat mlo Mutants to the Hemibiotrophic Fungal Pathogen Magnaporthe oryzae pv. Triticum." Genes 11, no. 5 (2020): 517. http://dx.doi.org/10.3390/genes11050517.

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Barley mlo mutants are well known for their profound resistance against powdery mildew disease. Recently, mlo mutant plants were generated in hexaploid bread wheat (Triticum aestivum) with the help of transgenic (transcription-activator-like nuclease, TALEN) and non-transgenic (targeted induced local lesions in genomes, TILLING) biotechnological approaches. While full-gene knockouts in the three wheat Mlo (TaMlo) homoeologs, created via TALEN, confer full resistance to the wheat powdery mildew pathogen (Blumeria graminis f.sp. tritici), the currently available TILLING-derived Tamlo missense mu

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46

Shi, A. N., S. Leath, and J. P. Murphy. "A Major Gene for Powdery Mildew Resistance Transferred to Common Wheat from Wild Einkorn Wheat." Phytopathology® 88, no. 2 (1998): 144–47. http://dx.doi.org/10.1094/phyto.1998.88.2.144.

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A major gene for resistance to wheat powdery mildew (Blumeria graminis f. sp. tritici = Erysiphe graminis f. sp. tritici) has been successfully transferred into hexaploid common wheat (Triticum aestivum, 2n = 6x = 42, AABBDD) from wild einkorn wheat (Triticum monococcum subsp. aegilopoides, 2n = 2x = 14, AA). NC96BGTA5 is a germ plasm line with the pedigree Saluda × 3/PI427662. The response patterns for powdery mildew resistance in NC96BGTA5 were tested with 30 differential isolates of B. graminis f. sp. tritici, and the line was resistant to all tested isolates. The analyses of P1, P2, F1, F2

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47

Li, H. J., R. L. Conner, B. D. McCallum, et al. "Resistance of Tangmai 4 wheat to powdery mildew, stem rust, leaf rust, and stripe rust and its chromosome composition." Canadian Journal of Plant Science 84, no. 4 (2004): 1015–23. http://dx.doi.org/10.4141/p03-195.

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The hard red winter wheat Tangmai 4 did not develop symptoms of infection following inoculation with powdery mildew (Erysiphe graminis DC. f. sp. tritici E. Marchal) isolates from regions of western Canada and northern China. Tangmai 4 exhibited resistance to stem rust (Puccinia graminis Pers. f. sp. tritici Eriks. & Henn.) and leaf rust (P. triticina Eriks.) races from western Canada. This wheat line was resistant to individual stripe rust (P. striiformis Westend. f. sp. tritici Eriks.) races from the U.S. and Canada. Sequential C-banding and genomic in situ hybridization (GISH), and elec

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48

Nedyalkova, S. "Induction of sporulation under in vitro conditions of pathogenic species causing leaf spot in Triticum turgidum ssp. durum (Desf.)." Agricultural Science and Technology 16, no. 4 (2024): 18–25. https://doi.org/10.15547/ast.2024.04.036.

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Abstract. An experiment was conducted with selected fungal isolates from different pathogenic species to induce sporulation under in vitro conditions by different additions to the nutrient medium. In pathogenicity tests and resistance studies it is important that inoculation is carried out with a spore suspension at a specific concentration rather than with a mycelium. The sporulation induction experiment performed on some isolates showed the best results with Pyrenophora tritici-repentis (sexual) and Monographella nivalis (asexual and sexual) on nettle stem segments, and with Parastagonospora

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Knott, D. R. "The chromosome location of four recombinants between Agropyron chromosome 7el2 and a wheat chromosome." Genome 30, no. 1 (1988): 97–98. http://dx.doi.org/10.1139/g88-016.

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Four stem rust (Puccinia graminis tritici Eriks. &Henn.) resistant wheat (Triticum aestivum L.) – Agropyron recombinants were analyzed to determine the wheat chromosomes involved. The Agropyron chromosome, 7el2, was known to be homoeologous to the group 7 chromosomes of wheat. Monosomic analysis showed that all four recombinants involved wheat chromosome 7D.Key words: rust resistance, Puccinia, Agropyron, wheat, Triticum, homoeologous recombination.

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50

TEICH, A. H. "ANNETTE WHEAT." Canadian Journal of Plant Science 70, no. 1 (1990): 289–93. http://dx.doi.org/10.4141/cjps90-032.

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Annette is a soft, white winter wheat (Triticum aestivum L.) cultivar highly to very resistant to 11 tester isolates of Erysiphe graminis f. sp. tritici with seven virulence genes. In its area of adaptation, southwestern Ontario with more than 2700 CHU, it has yield similar to that of the highest yielding recommended cultivars.Key words: Cultivar description, powdery mildew, wheat (winter), Triticum aestivum L.

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