Characteristics of new varieties of winter common wheat breeding of the myronivka institute of wheat as the allelic state of the lr34 leaf rust resistance gene
Journal Title: Біоресурси і природокористування [Biological Resources and Nature Management] - Year 2018, Vol 10, Issue 3
Abstract
Identification of the allele state Lr34 gene of resistance to the brown rust causative agent by a dominant marker based on polymorphism in 12 exons of caSNP12 in new varieties of soft winter wheat and their investigations on resistance to pathogens of brown rust and powdery mildew in conditions of artificial and provocative infectious backgrounds are conducted. The affection of the newly created varieties by brown rust and powdery mildew exciters during the three years of investigations was within the range of 0.1-10.0% and 1-20 %, respectively. The damage plants of the variety Podolanka (standard) by exciter of powdery mildew in researched years (2015, 2016, 2017) was: 10, 15 and 10 %, respectively, and brown rust - 10, 15, 0 %. The affection of the susceptible to the exciter powdery mildew variety Keprock was at the level of 15, 35, 15 %. The brown rust has developed at the susceptible variety Mironivska 10 at 15%, 30 %, and in 2017 year, the disease on wheat plants did not revealed. The varieties Bereginya Mironivska, MIP Dnipryanka and Balada Mironivska - contain the allele Lr34 (+), which is only 20% of the among 15 studied varieties according to the results of identification allelic state of the gene Lr34. It is known that the Lr34 gene is not race specific. It provides overall resistance to different pathotypes of brown rust in adult plants. That’s why, the results suggest that in the creation of new varieties of wheat resistant to brown rust, it is necessary to use varieties with the identified "stable" allele of the gene Lr34 as a source of stability in breeding.
Authors and Affiliations
H. M. Kovalyshyna, Yu. M. Dmytrenko, A. V. Karelov, I. O. Sozinov, N. O. Kozub, O. V. Humenyuk, T. I. Mukha
Keywords
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- EP ID EP408318
- DOI 10.31548/bio2018.03.018
- Views 70
- Downloads 0
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