Reaction of winter triticale somaclonal lines to Fusarium spp. at the seedling stage

T. Góral

Department of Plant Pathology, Plant Breeding and Acclimatization Institute, Radzików, 05-870 Błonie, Poland (Poland)

E. Arseniuk

Department of Plant Pathology, Plant Breeding and Acclimatization Institute, Radzików, 05-870 Błonie, Poland (Poland)

Abstract

Response of 136 somaclonal lines obtained from 15 winter triticale genotypes (Bolero, Dagro, Grado, Lasko, Moniko, Presto, Ugo, GRH 32-1, KS-24, MAH 15668-1, MAH 15833-1/1, T/8, T/9, T/28, T/47), to Fusarium seedling blight was evaluated. Mixture of five Fusarium species was used for inoculation. Somaclonal lines varied widely in their resistance to Fusarium spp. scored by coleoptile and root infection, and reduction of length of shoot and roots, and seedling weight. Most of the somaclonal lines differed significantly from parental genotypes in at least one of the above parameters. It was found that resistant parental genotypes (e.g. Grado, KS-24) produced mainly more susceptible somaclonal lines and susceptible ones (e.g. Ugo, MAH 15833-1/1) gave rise mainly to more resistant lines. However, some resistant lines originated from resistant genotypes (e.g Presto) were found.

Keywords:

Fusarium, resistance, seedling blight, somaclonal variation, triticale