Barley Leaf Stripe Disease in Algeria: Evaluation of Virulent Pyrenophora graminea Isolates and Identification of Resistant Algerian Barley Genotypes

Year 2019, Volume: 25 Issue: 3, 367 - 372, 05.09.2019

Hind Benkorteby-lyazıdı İmane Zeghar Leila Hanıfı-meklıche Zouaoui Bouznad

https://doi.org/10.15832/ankutbd.421747

Cited By: 2

Abstract

Nine isolates of Pyrenophora graminea, barley leaf stripe disease causal agent, collected from several regions in Algeria were evaluated under greenhouse conditions for their virulence to a collection of barley cultivars including three most cultivated Algerian varieties. Virulence levels were observed among the set of isolates and a mean disease rate ranging from 3.33% to 75.83% was found. Pathogenic variability of P. graminea and resistant gene effects in barley cultivars were revealed. Isolate OS was the most virulent among P. graminea isolates making it a suitable virulent isolate in future breeding programs. A set of 8 barley genotypes composed of common Algerian cultivars and local developed lines were tested for their reaction to P. graminea and yield response. Barley cultivar Minnesota 23 and line 18/17/7L2 were the most resistant of the collection with high grain number/ear and thousand grains weight even when diseased. These genotypes could be useful to integrate as candidate genitor plants into barley breeding programs to develop resistant cultivars to leaf stripe disease.

Keywords

Barley stripe disease, Aggressiveness, Barley, Resistance, Breeding, Algeria

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