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Cereal Research Communications
Authors: T. Warzecha, T. Adamski, Z. Kaczmarek, M. Surma, P. Goliński, J. Perkowski, J. Chełkowski, H. Wiśniewska, K. Krystkowiak, and A. Kuczyńska

Fusarium culmorum (W.G.Sm.) Sacc. is a pathogen affecting seedling, head, root and stem of barley, and the infection can result in significantly reduction of yield and grain quality. The aim of the studies was to compare the susceptibility of hulless and hulled barley doubled haploids (DH) to infection with F. culmorum . Thirty DH lines (15 hulled and 15 hulless) and their parents were inoculated with a conidial suspension of the isolate of F. culmorum KF350 (IPO348-01) (nivalenol chemotype). Experiment was carried out over six years. Spike infection score, kernel weight per spike, 1000-kernel weight and percentage of plump kernels (>2.5 mm) were examined in control and inoculated plants. In addition, in three environments, nivalenol (NIV) accumulation in infected kernels was analysed. Significant influence of genotypes and environments on spike infection, yield-related traits and NIV accumulation was found in inoculated plants. Hulless genotypes appeared to be more susceptible to infection than the hulled lines. The difference in NIV accumulation was not important — mean NIV content over three environments was similar for both groups of DH lines. Results suggest that glumes adhered to seed may protect it, to a certain degree, against penetration of the pathogen inside the seed.

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