Characterization of barley germplasm for leaf stripe (Pyrenophora graminea) resistance based on incidence and severity parameters

Arabi M. I. E. and Jawhar M. and Al-Shehadah E.: Characterization of barley germplasm for leaf stripe (Pyrenophora graminea) resistance based on incidence and severity parameters. In: Acta biologica Szegediensis, (63) 2. pp. 113-118. (2019)

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Barley leaf stripe (BLS) caused by Pyrenophora graminea is an important seed-borne disease of barley causing significant yield and quality losses worldwide. The development of resistant cultivars has proven difficult, therefore, in this work, BLSresistant barley germplasm was developed by crossing six barley cultivars currently used in Europe and West Asia. Out of 270 doubled haploid lines derived from these crosses, 40 lines were evaluated under field artificial infection conditions using incidence (I; proportion of diseased plants) and severity (S; proportion of infected leaf area per plant). Disease resistance parameters showed a broad range of variation in mean I and S values with a continuum of resistance levels ranging from highly susceptible to highly resistant with values being consistently higher in the susceptible ones. However, eight promising resistant lines with high yield per plant were identified. Moreover, BLS severity increased linearly as incidence increased (r = 0.76, P < 0.001). This work suggests that BLS resistance sources identified in this study can be used for further genetic analysis and introgression for varietal improvement, and that the positive correlation between I and S parameters may be beneficial for many types of studies on this disease.

Item Type: Article
Journal or Publication Title: Acta biologica Szegediensis
Date: 2019
Volume: 63
Number: 2
ISSN: 1588-4082
Page Range: pp. 113-118
Publisher: University of Szeged
Place of Publication: Szeged
Related URLs:
DOI: 10.14232/abs.2019.2.113-118
Uncontrolled Keywords: Növénybetegségek - gombák, Növénybetegségek - gabonafélék
Additional Information: Bibliogr.: p. 117-118. ; összefoglalás angol nyelven
Subjects: 01. Natural sciences
01. Natural sciences > 01.06. Biological sciences
Date Deposited: 2020. Jul. 27. 11:49
Last Modified: 2020. Nov. 12. 10:04

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