Published date: Nov 25 2019

Journal Title: KnE Life Sciences

Issue title: International Scientific and Practical Conference “AgroSMART – Smart Solutions for Agriculture”

Pages: 507–515

DOI: 10.18502/kls.v4i14.5638

Vladimir Zakharovulniish@mail.ruUlianovskii NIISKH, Russia

Anton SidorovAll-Russian Institute of Plant Genetic Resources, Russia

Lev TyryshkinAll-Russian Institute of Plant Genetic Resources, Russia

The paper presents the data on seedling and adult resistance to dark-brown leaf spot blotch (Bipolaris sorokiniana) in barley samples described in modern literature as resistant to the disease and in varieties allowed growing in the territory of Russian Federation. All 32 samples and 69 varieties under study were highly susceptible to the blotch at both growth stages. This fact indicates to urgent need in developing new methodes for dark-brown leaf spot blotch protection. Treatment of barley plants varieties with mixture of nitrogen and phosphorus salts solution reduced the disease development on seedlings of 13 commercial varieties and on adult plants of 36 varieties (52 % out of all studied). For all these 36 varieties weight of 1000 grains was significantly higher on treated plots compared to untreated ones for 11–108 %. The mechanism of nitrogen and phosphorus salts effect on the dark-brown leaf spot blotch development (changing virulence/aggressiveness of the pathogen) indicates that change of the salts concentrations and their ratio in the solution could expand the set of host plants genotypes on which this treatment will decrease the disease development.

[1] Khasanov, B.A. (1992). Identifier of fungi -- casual agents of plant helminthosporiosis from genera Bipolaris, Drechslera и Exserohilum. Tashkent.

[2] Kumar, J., Schafer, P., Huckelhoven, R., Langen G. et al. (2002). Bipolaris sorokiniana, a cereal pathogen of global concern: cytological and molecular approaches towards better control. Molecular Plant Pathology, vol. 3, pp. 185–195.

[3] Steffenson, B.J., Hayes, P.M., Kleinhofs, A. (1996). Genetics of seedling and adult plant resistance to net blotch (Pyrenophora teres f. teres) and spot blotch (Cochliobolus sativus) in barley. Theoretical and Applied Genetics, vol. 92, pp. 552–558.

[4] Tyryshkin, L.G. (2007). Genetic variability of wheat and barley for effective resistance to diseases and possibilities of its broadening. PhD dissertation. Saint-Petersburg: VIR.

[5] João, A.W.F., Francisco, X.R.V., Ariano, M.P., Laércio, Z. (2005). Resistance of barley genotypes to brown leaf spot. Euphytica, vol. 142, pp. 217–225.

[6] Valjavec-Gratian, M., Steffenson, B.J. (1997). Pathotypes of Cochliobolus sativus on barley in North Dakota. Plant Diseases, vol. 81, pp 1275–1278.

[7] Abdullaev, R.A., Batasheva, B.A., Radchenko, E.E. et al. (2017). Catalogue of the World collection of VIR: resistance of barley samples from Dagestan to harmful organisms and abiotic stresses. Saint-Petersburg: VIR.

[8] Orlov, S.Yu. (2014). Resistance of barley to Swedish fly (Oscinella frit L.) under conditions of the North-Western region of Russia. PhD dissertation. Saint-Petersburg: VIR.

[9] Afanasenko, O.S., Novozhilov K.V. (2009). Problems of rational use of genetic resources of plant resistance to diseases. Ecological genetics, vol. 7, pp. 38–43.

[10] Anisimova A.V., Abdullaev R.A. (2014). Screening of Dagestan barley for resistance to net and dark-brown leaf spot blotches. Proceedings on Applied Botany, Genetics and Breeding, vol. 175, pp. 67–71.

[11] Ivanova, N.V., Radiukevich, T.N., Anisimova A.V. (2010). Sources of economical biological characteristics of barley for breeding purposes. Saint-Petersburg: Belogorka.

[12] Lashina, N.M. (2015). Creation of barley dihaploids as an initial material for breeding varieties with group resistance to diseases. PhD dissertation. Saint-Petersburg: VIZR.

[13] Tyryshkin, L.G. (2016). Modification variability for virulence and aggressiveness in phytopathogens of cereal crops: conclusions, consequences, possibilities of practical application. Saint-Petersburg: SPbGAU.

[14] Fetch, T.Jr., Steffenson, B.J. (1997). Rating scales for assessing infection responses of barley infected with Cochliobolus sativus. Plant Disease, vol. 83, pp. 213–217.

[15] Arabi, M.I.E., Jawhar, M.J. (2010). A greenhouse method for assessing spot blotch resistance in barley. The Plant Pathology, vol. 26, pp. 421–423.