RESISTANCE OF HULLESS OATS TO SEED INFECTION
https://doi.org/10.26898/0370-8799-2018-2-2
Abstract
The work presents the results of studying resistance of hulless oats to internal seed infection. The research was carried out by using 34 samples of the world collection of The N.I. Vavilov All-Russian Research Institute of Plant Genetic Resources and locally-bred varieties from the harvest of 2013–2015 in the conditions of Northern forest-steppe of Western Siberia. Contamination of hulless oat seeds with helmintosporium, fusarium, alternaria and bacteriosis was revealed by the method of moist chamber with the use of paper rolls. The study showed the dependence of the infection intensity on the prevailing meteorological conditions during the growth and development of hulless oat plants. It was registered that at low air temperatures and high humidity of vegetation period, seed contamination rate with fungal and bacterial infections increases. It was revealed that hulless oat varieties are more susceptible to the fungi of the genus Alternaria sp. from 18.6 to 46.7% and bacterial diseases from 6.3 to 24.1%. Seed infection with Helmintosporium avenae Eidam and Fusarium sp. did not exceed 15%. Distribution of samples by groups of resistance to seminal infection showed that 55 to 76% of samples have practical resistance (less than 10% of infection) or weak susceptibility (10–25% of infection) to pathogens. On average, over the years of testing the seed infection of any variety of hulless oats did not exceed 35%, indicating the presence of unique resistant mechanisms in the naked forms of oats that protect the grain against the penetration of phytopathogens. Of all the samples analyzed, varieties Gavroche (Kemerovo), k-7776 (USA) and Nakota (USA) displayed practical resistance to fungal and bacterial diseases. Thus, they can be used in the process of creating varieties of hulless oats as sources of resistance to internal infection of seeds.
About the Author
O. A. Isachkova
Kemerovo Research Institute of Agriculture – Branch of the Siberian Federal Scientifi c Center of Agro-BioTechnologies RAS; Kemerovo State Agricultural Institute Markovtseva street
Russian Federation
Russian Federation
Candidate of Science in Agriculture, Lead Researc.
47 Tsentralnaya street, Novostroika, Kemerovo region, 650510; Kemerovo, 650056
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Review
For citations:
Isachkova O.A. RESISTANCE OF HULLESS OATS TO SEED INFECTION. Siberian Herald of Agricultural Science. 2018;48(2):11-16. (In Russ.) https://doi.org/10.26898/0370-8799-2018-2-2
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