Vergleichende Untersuchungen an abgetrennten Blättern zur Bewertung der Resistenz von Gerste gegen den Erreger der Netzfleckenkrankheit<i>Drechslera teres</i>(Sacc.) Shoemaker: (Kurze Mitteilung)

Hartleb, sc. Horst; Meyer, Dipl.-Math. Uwe

doi:10.1080/03235408809437784

Cited by 4 publications

(2 citation statements)

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“…Evaluation of resistance to net blotch was performed in the greenhouse on 12 plants per accession. Tests were performed both on detached leaves (Hartleb and Meyer 1988) and whole plants. When plants reached the 4–5 leaf stage, they were inoculated with three different isolates [codes 97:1 (Sweden), Am (Germany), NZ (New Zealand)].…”

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Screening the Spanish Barley Core Collection for disease resistance

Silvar¹,

Casas²,

Kopahnke³

et al. 2010

Plant Breeding

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With 6 tables Abstract The Spanish Barley Core Collection comprises 159 landrace‐derived inbred lines and 16 cultivars adapted to Southern European conditions. The collection was screened for resistance to powdery mildew (Blumeria graminis), scald (Rhynchosporium secalis), leaf rust (Puccinia hordei), net blotch (Pyrenophora teres f. teres), Barley yellow dwarf virus (BYDV) and Barley mild mosaic virus (BaMMV). Resistance to powdery mildew was outstanding, with 58 lines presenting mean overall resistance, among them seven landrace‐derived lines resistant to all seven isolates tested. About 26% of the Spanish lines were resistant to scald. Resistance to leaf rust and to net blotch was scarce, though a few accessions showed resistance levels as good as the checks. Thirteen accessions (12 Spanish) were totally resistant to BaMMV and c. 20% of accessions showed moderate tolerance to BYDV. Landrace‐derived lines from the Mediterranean Coast and Southern regions of Spain were the most resistant to powdery mildew and leaf rust, but the most susceptible to viruses. Potential sources of resistance might be preserved in some accessions subjected to selective pressure in the region of origin.

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confidence: 99%

Screening the Spanish Barley Core Collection for disease resistance

Silvar¹,

Casas²,

Kopahnke³

et al. 2010

Plant Breeding

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“…Three isolates Re 96, Re Am and Re CSl were used. The resistance level of the progenies against D. teres was determined 5 dpi by estimating the percentage of leaf area covered with chlorotic and necrotic lesions (HARTLEB and MEYER 1988).…”

Section: Test For Toxin Tolerance and Disease Resistancementioning

confidence: 99%

Resistance Against Drechslera teres (Sacc.) Shoem. in Progenies of in vitro Selected Callus Derived Plants of Barley (Hordeum vulgare L.)

Hunold

Hartleb²,

Afanasenko

1992

Journal of Phytopathology

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Immature embryo derived callus cultures of barley were selected in vitro against a toxin (culture filtrate‐methanol supernatant) produced by Drechslera teres. Both S1 and S2 progenies of regenerated plants (selected by toxin application and non‐selected ones) were tested for their toxin tolerance and disease resistance. For this purpose, it was possible to use different culture filtrates and pathogen isolates, produced and maintained at two phytopathological institutes. Twelve out of 26 S2 progenies examined had a significantly reduced toxin sensitivity in comparison to the donor. Nine of these genotypes also expressed an isolate‐dependent improvement of their disease resistance. At the level of individual plants, 9 progenies showed a correlation between toxm tolerance and resistance against the pathogen. Somaclonal variation in reactions of non‐selected regenerated plants occurred. A mutagen treatment increased the number of toxin tolerant plants within s, progenies, and segregation took place for this trait.

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