Genetic analysis of resistance to Puccinia triticina Erikss. In Triticum spelta L.
Background: Leaf rust caused by Puccinia triticina Erikss. is a widely distributed wheat (Triticum aestivum L.) disease. Using wild relatives, such as Triticum spelta L., as a source of desirable traits represents a good strategy for developing wheat varieties, as T. spelta L. has shown tolerance to...
| Autores principales: | , , , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
IMR Press
2025
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/179107 |
| _version_ | 1855514940009349120 |
|---|---|
| author | Valdez Rodríguez, Yerica Renata Huerta-Espino, Julio Benítez-Riquelme, Ignacio Dreisigacker, Susanne Santacruz-Varela, Amalio Mendoza-Castillo, Ma. del Carmen |
| author_browse | Benítez-Riquelme, Ignacio Dreisigacker, Susanne Huerta-Espino, Julio Mendoza-Castillo, Ma. del Carmen Santacruz-Varela, Amalio Valdez Rodríguez, Yerica Renata |
| author_facet | Valdez Rodríguez, Yerica Renata Huerta-Espino, Julio Benítez-Riquelme, Ignacio Dreisigacker, Susanne Santacruz-Varela, Amalio Mendoza-Castillo, Ma. del Carmen |
| author_sort | Valdez Rodríguez, Yerica Renata |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Background: Leaf rust caused by Puccinia triticina Erikss. is a widely distributed wheat (Triticum aestivum L.) disease. Using wild relatives, such as Triticum spelta L., as a source of desirable traits represents a good strategy for developing wheat varieties, as T. spelta L. has shown tolerance to various types of biotic and abiotic stresses. This study aimed to determine the genetic basis of resistance to leaf rust in the accession Triticum spelta 109 (PI 355580). Methods: The resistant genotype T. spelta 109 was crossed with the bread wheat variety Roelfs F2007, and 135 F3 families were generated to analyze the genetics of resistance to the MBJ/SP leaf rust race. The families were classified into three groups: (i) homozygous-resistant; (ii) homozygous-susceptible; (iii) segregating. A χ2 test was performed to compare whether the expected and observed segregation ratios fit and to determine the number of genes involved in the resistance of T. spelta 109. Results: The seedling tests in the F1 generation showed susceptibility in all plants, indicating that the resistance is conferred by a recessive gene(s). The results of the χ2 test revealed that the observed segregation ratios of the F3 families followed the expected values, suggesting that a recessive gene confers the leaf rust resistance present in T. spelta 109. According to our results and the reported recessive genes identified among the T. spelta accessions, the identified recessive gene in T. spelta 109 (PI355580) is different and most likely a novel leaf rust resistance gene. Conclusions: The genetic resistance to leaf rust of T. spelta 109 (PI 355580) is conferred by a single recessive gene. The importance and usefulness of searching for rust resistance genes from different sources and incorporating them into the genetic base of wheat breeding programs to provide diversity is confirmed. |
| format | Journal Article |
| id | CGSpace179107 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | IMR Press |
| publisherStr | IMR Press |
| record_format | dspace |
| spelling | CGSpace1791072025-12-20T02:01:15Z Genetic analysis of resistance to Puccinia triticina Erikss. In Triticum spelta L. Valdez Rodríguez, Yerica Renata Huerta-Espino, Julio Benítez-Riquelme, Ignacio Dreisigacker, Susanne Santacruz-Varela, Amalio Mendoza-Castillo, Ma. del Carmen puccinia recondita triticum aestivum subsp. spelta genetic resistance recessive genes Background: Leaf rust caused by Puccinia triticina Erikss. is a widely distributed wheat (Triticum aestivum L.) disease. Using wild relatives, such as Triticum spelta L., as a source of desirable traits represents a good strategy for developing wheat varieties, as T. spelta L. has shown tolerance to various types of biotic and abiotic stresses. This study aimed to determine the genetic basis of resistance to leaf rust in the accession Triticum spelta 109 (PI 355580). Methods: The resistant genotype T. spelta 109 was crossed with the bread wheat variety Roelfs F2007, and 135 F3 families were generated to analyze the genetics of resistance to the MBJ/SP leaf rust race. The families were classified into three groups: (i) homozygous-resistant; (ii) homozygous-susceptible; (iii) segregating. A χ2 test was performed to compare whether the expected and observed segregation ratios fit and to determine the number of genes involved in the resistance of T. spelta 109. Results: The seedling tests in the F1 generation showed susceptibility in all plants, indicating that the resistance is conferred by a recessive gene(s). The results of the χ2 test revealed that the observed segregation ratios of the F3 families followed the expected values, suggesting that a recessive gene confers the leaf rust resistance present in T. spelta 109. According to our results and the reported recessive genes identified among the T. spelta accessions, the identified recessive gene in T. spelta 109 (PI355580) is different and most likely a novel leaf rust resistance gene. Conclusions: The genetic resistance to leaf rust of T. spelta 109 (PI 355580) is conferred by a single recessive gene. The importance and usefulness of searching for rust resistance genes from different sources and incorporating them into the genetic base of wheat breeding programs to provide diversity is confirmed. 2025-08 2025-12-19T22:32:09Z 2025-12-19T22:32:09Z Journal Article https://hdl.handle.net/10568/179107 en Open Access application/pdf IMR Press Valdez-Rodríguez, Y. R., Huerta-Espino, J., Benítez-Riquelme, I., Dreisigacker, S., Santacruz-Varela, A., & Del Carmen Mendoza-Castillo, M. (2025). Genetic analysis of resistance to Puccinia triticina Erikss. In Triticum spelta L. Frontiers in Bioscience-Scholar, 17(3), 39712. https://doi.org/10.31083/fbs39712 |
| spellingShingle | puccinia recondita triticum aestivum subsp. spelta genetic resistance recessive genes Valdez Rodríguez, Yerica Renata Huerta-Espino, Julio Benítez-Riquelme, Ignacio Dreisigacker, Susanne Santacruz-Varela, Amalio Mendoza-Castillo, Ma. del Carmen Genetic analysis of resistance to Puccinia triticina Erikss. In Triticum spelta L. |
| title | Genetic analysis of resistance to Puccinia triticina Erikss. In Triticum spelta L. |
| title_full | Genetic analysis of resistance to Puccinia triticina Erikss. In Triticum spelta L. |
| title_fullStr | Genetic analysis of resistance to Puccinia triticina Erikss. In Triticum spelta L. |
| title_full_unstemmed | Genetic analysis of resistance to Puccinia triticina Erikss. In Triticum spelta L. |
| title_short | Genetic analysis of resistance to Puccinia triticina Erikss. In Triticum spelta L. |
| title_sort | genetic analysis of resistance to puccinia triticina erikss in triticum spelta l |
| topic | puccinia recondita triticum aestivum subsp. spelta genetic resistance recessive genes |
| url | https://hdl.handle.net/10568/179107 |
| work_keys_str_mv | AT valdezrodriguezyericarenata geneticanalysisofresistancetopucciniatriticinaerikssintriticumspeltal AT huertaespinojulio geneticanalysisofresistancetopucciniatriticinaerikssintriticumspeltal AT benitezriquelmeignacio geneticanalysisofresistancetopucciniatriticinaerikssintriticumspeltal AT dreisigackersusanne geneticanalysisofresistancetopucciniatriticinaerikssintriticumspeltal AT santacruzvarelaamalio geneticanalysisofresistancetopucciniatriticinaerikssintriticumspeltal AT mendozacastillomadelcarmen geneticanalysisofresistancetopucciniatriticinaerikssintriticumspeltal |