Resistance of samples of naked oats to stem rust
https://doi.org/10.26898/0370-8799-2020-4-6
Abstract
The results of studying the resistance of samples of naked oats from the world collection of the N.I. Vavilov All-Russian Institute of Plant Genetic Resources and varieties of local breeding work to stem rust lesion are presented. The study was carried out in 20172019 in a field experiment in natural conditions in Kemerovo region. The influence of meteorological factors during the vegetation period of naked oat plants on the degree of disease damage was noted: more intense lesion was observed in years with low air temperatures and excessive moisture supply during the period of seedling-ear formation and a large amount of precipitation during the period of filling and maturation of grain. The results of phytopathological analysis of 50 collection samples of naked oats revealed that mid-late samples are more affected by stem rust (74.9% on average for the group). The study (n = 50) revealed the effect of stem rust lesion on the resistance to lodging of crops (r = –0.5751 at R = 0.273), grain size (r = –0.7737 at R = 0.273), and yield of naked oat samples (r = –0.9387 at R = 0.273). Naked oats are highly susceptible to pathogen lesion, 84% of the samples showed very low resistance with a damage index of more than 65.1%. Samples with a low damage degree were identified, characterized by high yield rates, 1000 grain weight, resistance to lodging and smut fungi, and a low level of segregation of hulled grains: Pennline 9010 (USA), Numbat (Australia), Progress (Omsk region), Gehl (Canada), Piband (Leningrad region), g/o-327-1/16, g/o-441-1/17, g/o-444-7/17 (Kemerovo region).
About the Authors
O. A. Isachkova
Kemerovo Research Institute of Agriculture – Branch of the Siberian Federal Scientific Centre of Agro-BioTechnologies of the Russian Academy of Sciences; Kuzbass State Agricultural Academy
Russian Federation
Russian Federation
Olga A. Isachkova, Candidate of Science in Agriculture, Lead Researcher
47, Tsentralnaya St., Novostroika, Kemerovo district, Kemerovo region, 650510
A. O. Loginova
Kemerovo Research Institute of Agriculture – Branch of the Siberian Federal Scientific Centre of Agro-BioTechnologies of the Russian Academy of Sciences
Russian Federation
Russian Federation
Anastasia O. Loginova, Researcher
Novostroyka, Kemerovo Region
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Review
For citations:
Isachkova O.A., Loginova A.O. Resistance of samples of naked oats to stem rust. Siberian Herald of Agricultural Science. 2020;50(4):48-55. (In Russ.) https://doi.org/10.26898/0370-8799-2020-4-6
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