Resumen

BOBADILLA MELENDEZ, Mirna; HERNANDEZ-ANGUIANO, Ana María; ZAMORA-DIAZ, Mauro R.  y  VARGAS-HERNANDEZ, Mateo. Evaluation of malt barley lines to spindle fusariosis and accumulation of deoxynivalenol. Rev. Mex. Cienc. Agríc [online]. 2019, vol.10, n.3, pp.485-498.  Epub 30-Mar-2020. ISSN 2007-0934.  https://doi.org/10.29312/remexca.v10i3.916.

The fusariosis of the spike by Fusarium graminearum is a disease that affects the yield and sanitary quality of the barley grain. Among the control measures is the use of resistant varieties, so this work had as objectives to evaluate the resistance to fusariosis and the accumulation of deoxynivalenol (DON) in 131 advanced malting barley lines selected for their tolerance to yellow rust, rust of the leaf, reticulated spot, leaf blight and scald of the leaf, of the barley program of the INIFAP-CEVAMEX. For three years, the advanced lines 30, 47, 65 and 123, as well as lines 73, 91 and 96, of six and two rows of grain, respectively, registered very low symptoms of fusariosis in response to inoculation with F. graminearum. Although the severity of the disease was not related (r= 0.5682) to the accumulation of DON, these lines registered very low or no toxin production. The information generated in this study is relevant because it indicates that these lines are resistant to the disease and have the potential to be used as sources of resistance in a crossbreeding program in malting barley that includes spike fusariosis in all diseases.

Palabras llave : Fusarium graminearum; Hordeum vulgare; DON mycotoxin; resistance.