Induction of FHB tolerance in wheat with plant hormones elicitors treatments

BÖRNER ANDREAS; LORI GLADYS; CASTRO ANA MARÍA; DELL ARCHIPRETE MARCOS, PERELLO LAUTARO; PINTOS FEDERICO; GIMÉNEZ DANIEL O.

Annual Wheat Newsletter

Kansas State University

Año: 2016 vol. 62 p. 8 - 12

FHB caused by Fusarium graminearum (Schwabe), is one of the most important diseases affecting wheat ( Triticum aestivum L. ) in all grain-producing regions of the world. FHB causes yield losses, deterioration of the quality and grain contamination with mycotoxins, which constitute a risk to human and animal health, and undertake industrial use.In this research we studied the possibility of inducing defense mechanisms to the FHB by exogenous application of plant growth regulators in a commercial wheat Klein Zorro (KZ) and two double haploid lines derived from Opata x Synthetic (OXS) and from Spark x Rialto (SXR). The application of jasmonic acid (JAS) and gibberellic acid (GA) was carried out in full anthesis and after 48 hours treated plants were artificially inoculated with Fusarium graminearum using two techniques: spray inoculation with spore suspension and inoculation point in the central spikelets. Such techniques help to highlight the mechanism of resistance to the penetration of the pathogen (Type I mechanism) and resistance to spread of the pathogen (type II mechanism) respectively.