Czech J. Genet. Plant Breed., 2003, 39(1):21-23 | DOI: 10.17221/3717-CJGPB

Resistance to Diseases in Wheat Collection Samples and Somaclonal Variants

L.G. Tyryshkin, N.A. Tyryshkina
N. I. Vavilov Institute of Plant Industry, St.-Petersburg, 190000 Russia

More than 2000 wheat collection samples were studied for seedling resistance to 4 diseases. Noncoincidence of results obtained after inoculation of leaf segments placed on water solution of benzimidazole (60 ppm) and intact plants was found for 3 foliar diseases (leaf rust - Puccinia recondita, dark brown leaf spot blotch - Bipolaris sorokiniana and septoria glume blotch - Septoria nodorum). Sixty-three entries were resistant to leaf rust; 26 of them have gene for resistance Lr26 (non-effective under field condition), 25 - gene Lr24, 4 - gene Lr19, 8 - gene Lr9 and 2 - gene Lr41. Samples 181-5, Fielder, Butte 66, Raj 1972 and Soisson were moderately resistant to spot blotch; 181-5 - to common root rot and Moking and MN 81330 - to glume blotch. Very high level of partial resistance to 3 diseases was found in late generations of somaclonal lines of weakly and moderately resistant initial genotypes: to leaf rust in lines of cv. Spica, to leaf spot blotch - in lines of 181-5, to common root rot - in that of 181-5 and cv. Vera; moderate resistance to glume blotch was identified in lines of cv. Spica.

Keywords: wheat; leaf rust; dark brown leaf spot blotch; common root rot; septoria glume blotch

Published: March 31, 2003  Show citation

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Tyryshkin LG, Tyryshkina NA. Resistance to Diseases in Wheat Collection Samples and Somaclonal Variants. Czech J. Genet. Plant Breed. 2003;39(1):21-23. doi: 10.17221/3717-CJGPB.
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