Resistance of barley accessions from the East Asian Center of crop diversity to the net and spot forms of the net blotch pathogen
https://doi.org/10.30901/2227-8834-2025-3-260-269
Abstract
Background. Barley is a major fodder crop and valuable raw material for the brewing industry. A harmful disease of barley is net blotch, caused by the hemibiotrophic fungus Pyrenophora teres Drechsler, which exists in two forms that differ in symptoms on barley: the net form, P. teres f. teres, and the spot form, P. teres f. maculata Smed.-Pet. Thus, one of the crucial tasks is to expand the collection of resistance sources and donors for breeding.
Materials and methods. A set of 53 barley accessions from the East Asian Center of diversity, with various levels of resistance to P. teres, served as the material for the study. Different pathotypes of P. teres f. teres (Ptt) and P. teres f. maculata (Ptm) were employed. Barley seedlings were assessed for resistance under controlled laboratory conditions using the international 0–10 score scale.
Results and conclusions. Race-specific resistance to a majority of the studied Ptt pathotypes was ascertained for 18 barley accessions (30.2%), while 14 accessions proved resistant to two Ptm isolates (26.4%). In most accessions, resistance to Ptt is controlled by a few minor genes. Accessions k-3945, k-11011 and k-20497 were identified as resistant to both Ptt and Ptm.
About the Authors
N. M. LashinaRussian Federation
Nina M. lashina - Cand. Sci. (Biology), Researcher.
3 Podbelskogo Hwy., Pushkin, St. Petersburg 196608
O. S. Afanasenko
Russian Federation
Olga S. Afanasenko - Dr. Sci. (Biology), Chief Researcher.
3 Podbelskogo Hwy., Pushkin, St. Petersburg 196608
I. G. Loskutov
Russian Federation
Igor G. loskutov - Dr. Sci. (Biology), Chief Researcher.
42, 44 Bolshaya Morskaya Street, St. Petersburg 190000
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Review
For citations:
Lashina N.M., Afanasenko O.S., Loskutov I.G. Resistance of barley accessions from the East Asian Center of crop diversity to the net and spot forms of the net blotch pathogen. Proceedings on applied botany, genetics and breeding. 2025;186(3):260-269. (In Russ.) https://doi.org/10.30901/2227-8834-2025-3-260-269