Scientific Journal of KubSAU

Polythematic online scientific journal
of Kuban State Agrarian University
ISSN 1990-4665
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Name

Samofalov Aleksandr Petrovich

Scholastic degree


Academic rank

—

Honorary rank

—

Organization, job position

All-Russian Research Institute of crops
   

Web site url

—

Email

vniizk30@mail.ru


Articles count: 2

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COLLECTION SAMPLES OF SOFT WINTER WHEAT TOLERANT TO LEAF RUST AND POWDERY MILDEW

abstract 1131509105 issue 113 pp. 1504 – 1513 30.11.2015 ru 757
Diseases cause great damage to agriculture, reducing yields and decreasing its quality. The losses are up to 20-30% of potential crop yields. Different types of rust and powdery mildew cause significant damage to wheat. Thereby, the growing of varieties tolerant to these diseases is of great importance at present. It allows solving such problems as the improvement of stability of grain production (especially in the epiphytotic time), improvement of its quality and reduction of prime cost of the product. Cultivation of resistant varieties gives the opportunity to avoid a use of crop protection chemicals and thus, to improve environment. The researches were carried out in the laboratory of intensive soft winter wheat breeding and seed-growing of FSBSI ARRIGC after I.G. Kalinenko in 2013-2015. The crop was sown in a bare fallow. 275 samples of soft winter wheat from the world collection VIR, Turkey (CIMMYT), new varieties of domestic and foreign breeding, varieties and constant selection lines of own selection were the subjects of the study. Favorable for disease development weather conditions allowed evaluating collection samples according to the degree of infection with leaf rust and powdery mildew under natural conditions. According to a complex resistance to leaf rust and powdery mildew we have distinguished the following samples: ‘Nakhodka’, ‘1226/98’, ‘662/99’, ‘1366/08’, ‘Patriarkh’ (Russia); ‘Shestopalivka’(Ukraine); ‘Simonida’ (Serbia); ‘MV 15-04’ (Hungary); ‘Rialto’ (England); ‘Menestrel’ (France); ‘№42 CIMMYT’ (US). Thus, our conducted study resulted in distinguishing the samples of soft winter wheat which are resistant to leaf rust and powdery mildew and are recommended to use as a source of resistance and tolerance to these pathogens. The samples with a combined resistance to both pathogens are of particular interest
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HARMFULNESS OF BROWN RUST WITHIN WINTER WHEAT VARIETIES WITH DIFFERENT LEVELS OF RESISTANCE TO PATHOGEN IN THE SOUTH OF THE ROSTOV REGION

abstract 1552001015 issue 155 pp. 194 – 206 31.01.2020 ru 0
The purpose of the work was to test the winter wheat varieties artificially infected with North-Caucasus brown rust to identify its harmfulness. There was carried out a two-stage testing on two sets (8 and 10) of varieties that differed in their resistance to the pathogen. As a result, there has been identified high brown rust harmfulness in susceptible varieties, which led to a yield decrease from 16.3 to 32.2%. Among the maximum infected varieties, there has been identified the most tolerant variety ‘Tarasovskaya 29’ which, when damaged to 100%, had a minimum yield decrease (less than 10.6%). The poorly susceptible to brown rust varieties reduced their yields from 11.2% to 20.7%. Among them, the variety ‘Spartak’ showed lower rates of a yield decline. Among the five varieties that showed an average brown rust affection, there have been noted various indicators of a yield decrease. The variety ‘Donskaya Yubileynaya’ showed a minimum decrease of a yield and its structural elements under the conditions of artificial infection with brown rust; and together with the variety ‘Tarasovskaya 29’ can be classed to the varieties tolerant to brown rust. When predicting brown rust epiphytoty the susceptible and medium-resistant wheat varieties require obligatory protection with fungicides
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