Leaf rust resistance in hybrid lines derived from crossess between Hordeum vulgare and Hordeum bulbosum.

Jerzy H. Czembor

Plant Breeding and Acclimatization Institute - National Research Institute, Radzików, 05-870 Błonie, Poland (Poland)

Henryk J. Czembor

Plant Breeding and Acclimatization Institute - National Research Institute, Radzików, 05-870 Błonie, Poland (Poland)

Richard Pickering

Plant Breeding and Acclimatization Institute - National Research Institute, Radzików, 05-870 Błonie, Poland (Poland)

Abstract

Leaf rust caused by fungus Puccinia hordei has great economic importance in many barley growing regions in Europe, North America, Australia and West Asia and North Africa. Bulbous barley grass (Hordeum bulbosum L.), is the only member of the secondary barley genepool. In presented study 6 recombinant lines obtained from backcrosses of barley cultivars (backcrossing parents) and accessions of H. bulbosum were tested with 8 differential isolates of leaf rust. This study showed that resistance to leaf rust is present in 5 from total 6 recombinant lines. Outstanding resistance to leaf rust was identified in line 886Z3/1/10/1/2/1, which showed resistance reaction 0 for inoculation with all isolates used...

Keywords:

Hordeum bulbosum, leaf rust, Puccinia hordei, recombinant lines, resistance genes