Genetic and Phenotypic Diversity of European Triticale: GWAS of Yellow Rust Resistance and Agronomic Traits

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F25%3A73631743" target="_blank" >RIV/61989592:15310/25:73631743 - isvavai.cz</a>

Result on the web

<a href="https://onlinelibrary.wiley.com/doi/epdf/10.1111/pbr.70030" target="_blank" >https://onlinelibrary.wiley.com/doi/epdf/10.1111/pbr.70030</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/pbr.70030" target="_blank" >10.1111/pbr.70030</a>

Result language

angličtina

Original language name

Genetic and Phenotypic Diversity of European Triticale: GWAS of Yellow Rust Resistance and Agronomic Traits

Original language description

Triticale (x Triticosecale Wittmack) is an interspecific hybrid of wheat and rye. It is a promising grain and forage crop that thrives in poorer soils and low-input farming systems. It can serve as a viable alternative to traditional small grains such as wheat and barley, bringing diversity to crop rotations and enhancing biodiversity in agricultural practices. Although the original aim was to develop a hybrid combining the best traits of both parents, namely, the quality of wheat and the improved tolerance to (a)biotic stress factors of rye, the outcome turned out differently. Today, its susceptibility to evolving pathogens, particularly Puccinia striiformis f. sp. tritici (Pst), the causal agent of yellow (stripe) rust, poses a challenge for its cultivation. This study evaluated 280 triticale accessions, including cultivars and advanced breeding lines of predominantly European origin, across five agroecological zones over two to three growing seasons. Phenotypic assessments focused primarily on resistance to yellow rust (YR). Other relevant phenotypic traits, such as plant height and heading date, have also been recorded. A Genome-Wide Association Study (GWAS) was performed using a dataset of 14,529 DArTseq SNP markers to determine the genetic control of the interested traits. Phenotypic screening revealed considerable variation in YR severity between years, locations and triticale genotypes, with similar results found for plant height and heading date. On the genetic level, there was substantial variation between the genotypes. Still, no significant population structure was visible as the genotypes were mainly grouped according to the donor breeding institute. The GWAS revealed a total of 12 significant marker-trait associations to the phenotypic traits of YR resistance, plant height and heading date; half of these markers are located in the rye subgenome. The results of this study confirm the presence of exploitable genetic diversity in the European triticale germplasm, representing a valuable resource for research and breeding programmes aimed at improving disease resistance and adaptation.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10603 - Genetics and heredity (medical genetics to be 3)

Project

—

Continuities

R - Projekt Ramcoveho programu EK

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

PLANT BREEDING

ISSN

0179-9541

e-ISSN

1439-0523

Volume of the periodical

2025

Issue of the periodical within the volume

9

Country of publishing house

DE - GERMANY

Number of pages

17

Pages from-to

1-17

UT code for WoS article

001571931300001

EID of the result in the Scopus database

2-s2.0-105016240793