Comparative study of Pyrenophora graminea incidence on Hordeum vulgare L. hybrid populations and their parents.

Wahiba Afissa; Fadhila Siaki

doi:10.56027/JOASD.spiss102021

Auteurs-es

Wahiba Afissa
Fadhila Siaki

DOI :

https://doi.org/10.56027/JOASD.spiss102021

Mots-clés :

Pyrenophora graminea, barley (Hordeum vulgare L.), leaf stripe, variability, resistance

Résumé

The seed- borne pathogen Pyrenophora graminea Ito& Kur. is the causal agent of barley leaf stripe, a destructive disease in most barley growing region in the world. In order to improve the barley species in Algeria against this disease, it is necessary to know their tolerance reaction to it. The genotype that have been tested are five parent genotypes: ACSAD, Tichedrett, Saida, Rihane, Hamra and eight populations hybrid obtained by intraspecific crosses of the parents and then sowing of F1 to F8. We compared the incidence of the isolate of Pyrenophora graminea for morphological characters (Stem height) and yield (1000-grain weight, medium yield of plant) of the studied variety. The results obtained showed the existence of variability between our thirteen genotypes of barley which had a different resistance level in the quantitative and qualitative characters.

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