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THE STUDY OF A HOST PLANT GENETIC DIVERSITY TO THE TRANSCAUCASIAN POPULATION OF WHEAT YELLOW RUST (PUCCINIA STRIIFORMIS WEST. F. SP. TRITICI ERIKSS. ET HENN.) PATHOGEN
03.00.00 Biological sciences
Description
The immunologic characteristics of 18 domestic winter wheat cultivars to Transcaucasia population of yellow rust pathogen have been studied. 251 resistance sources to Puccinia striiformis have been detected among 468 studied soft wheat samples from Vavilov ARRIP collection. The efficiency of known resistance genes (Yr) to Transcaucasia population of yellow rust pathogen are estimated
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THE EFFECT OF FUNGICIDES FROM DIF-FERENT CHEMICAL CLASSES ON THE VI-RULENCE GENEPOOL OF WHEAT BROWN RUST NORTH CAUCASIAN POPULATION (PATHOGEN - PUCCINIA TRITICINA ERIKS.) IN THE SOUTH OF RUSSIA
03.00.00 Biological sciences
Description
The article has covered the influence of the com-bined fungicide rex duo, suspension concentrate (310+87 g/l) on the population structure of wheat brown rust pathogen in the North Caucasus. The comparative assessment of effect of single-component preparations from different classes on the pathogen population was performed out
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VIRULENCE AND DNA-POLYMORPHISM OF PUCCINIA TRITICINA ISOLATES FROM NORTH CAUCASUS AND LENINGRAD REGION
03.00.00 Biological sciences
Description
Puccinia triticina isolates from North Caucasus and Leningrad region were compared in regard to the genetic structure, phenotypic composition as well as frequency of occurrence of RAPD-phenotypes and polymorphous major fragments with the help of Rogers index. Did not demonstrate any significant differences according to their genetic structure and occurrence of major fragments of DNA-polymorphism. The difference of isolates from given regions was determined with high degree of confidence according to the phenotypes of virulence and RAPD-phenotypes
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RESISTANCE SOURCES OF WHEAT AND AEGILOPS TO STEM RUST (Puccinia graminis Pers. f. sp. tritici Erikss. et Henn. pathogen)
03.00.00 Biological sciences
Description
The search of resistance sources to the wheat stem rust pathogen among wheat collection material, its rare species and Aegilops (goat grass) was conducted. The samples resistant to the pathogen were detected. They have been studied on the artificial infectious background for three years and they are recommended for use in selection