Differential influence of QTL linked to Fusarium head blight, Fusarium-damaged kernel, deoxynivalenol contents and associated morphological traits in a Frontana-derived wheat population

• Published in: Euphytica Vol. 200; no. 1; pp. 9 - 26
• Main Authors: Ágnes, Szabó-Hevér, Szabolcs, Lehoczki-Krsjak, Mónika, Varga, László, Purnhauser, János, Pauk, Csaba, Lantos, Ákos, Mesterházy
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer-Verlag 01.11.2014; Springer Netherlands; Springer; Springer Nature B.V
• Subjects: Accumulation; Agronomy. Soil science and plant productions; Biological and medical sciences; Biomedical and Life Sciences; Biotechnology; breeding; Chromosomes; deoxynivalenol; Epidemics; Feed industry; Food contamination; Fundamental and applied biological sciences. Psychology; Fusarium; Fusarium head blight; Gene loci; Gene mapping; genetic background; genetic markers; Genetics and breeding of economic plants; Genotype & phenotype; heading; Life Sciences; loci; microsatellite repeats; Plant Genetics and Genomics; Plant Pathology; Plant Physiology; Plant resistance; Plant Sciences; Polymorphism; Quantitative genetics; quantitative trait loci; seeds; Varietal selection. Specialized plant breeding, plant breeding aims; Wheat; Quantitative trait loci; Resistance; Fusarium-damaged kernel; Deoxynivalenol; Fusarium head blight; Monocotyledones; Mycosis; Vomitoxin; Cereal crop; Fungi; Infection; Toxin; Gramineae; Morphology; Angiospermae; Genetic improvement; Fusarium; Population; Spermatophyta; Fungi Imperfecti; Damage; Triticum aestivum
• ISSN: 0014-2336; 1573-5060
• DOI: 10.1007/s10681-014-1124-2

The genetic background of Fusarium head blight (FHB) resistance in the moderately resistant wheat variety Frontana was investigated in the GK Mini Manó/Frontana DH population (n = 168). The plant material was evaluated across seven epidemic environments for FHB, Fusarium-damaged kernel (FDK) and deoxynivalenol (DON) contents caused by two Fusarium species (F. culmorum and F. graminearum). The effects of phenotypic traits such as plant height and heading date were also considered in the experiments. In the population, 527 polymorph markers (DArT, SSR) within a distance of 1,381 cM distance were mapped. The quantitative trait locus/loci (QTL) on chromosomes 4A and 4B demonstrated a significant linkage only with FHB, while QTL on chromosomes 3A, 4B, 7A and 7B were linked to DON accumulation alone. Regions determining all the investigated Fusarium resistance traits were identified on chromosomes 1B, 2D, 3B, 5A, 5B and 6B. The markers in these regions are of the greatest significance from the aspect of resistance breeding. Our results indicate that the genetic background of resistance against FHB, FDK and DON accumulation can differ, and all these traits should be taken under consideration during resistance tests. Moreover, this is the first report on the mapping of Frontana-derived QTL that influence DON accumulation, which is important since the level of DON contamination determines the actions of the food and feed industries. Selection should therefore also focus on this trait by using molecular markers linked to DON content.