CHARACTERIZATION OF ISOLATES OF ALTERNARIA AND FUSARIUM FOUND IN CARROT FROM DIFFERENT ECOLOGICAL AND GEOGRAPHIC ZONES
https://doi.org/10.18619/2072-9146-2016-3-84-91
Abstract
Selection of infected material for research was carried out in experimental carrot plots at GNU VNIIO (Moscow region), Voronezh OOS (Voronezh oblast), Baraccudas OOS (Rostov
region) and Israel. The first year plants of carrot, the roots, were used for the study. There are many scientific papers cited where many different methods of artificial infection of plants with fungal disease pathogens were given to control the stability of carrot genotypes in various phases of plant development. One of the ways to lead the purposed breeding program for resistance is the extraction of pathogens isolates and the method of fast assessment on the basis of determining the aggressiveness of new strains and their use in breeding work. This article presents a method of inoculation of cut-discs of root. A great advantage of the method is in its efficiency and the current results can be obtained within 2 weeks from the moment of infection. As a result, the work on the isolation of fungi from carrot plants, the pure culture collection of strains: Alternaria radicina and Fusarium avenaceum was obtained. The characteristics and
morphology description of colonies of isolates of RR. Alternaria and Fusarium found in carrot plants taken from different ecological and geographical zones were given. The most aggressive isolates of the following ecological and geographical zones as Alternaria at Moscow and Rostov regions, Fusarium at Voronezh and Moscow regions were revealed. These isolates will be used as standards of aggressiveness for the test of newly isolated strains regarded as inoculum to conduct immunological experiments
in carrot breeding for resistance to Fusarium and Alternaria.
region) and Israel. The first year plants of carrot, the roots, were used for the study. There are many scientific papers cited where many different methods of artificial infection of plants with fungal disease pathogens were given to control the stability of carrot genotypes in various phases of plant development. One of the ways to lead the purposed breeding program for resistance is the extraction of pathogens isolates and the method of fast assessment on the basis of determining the aggressiveness of new strains and their use in breeding work. This article presents a method of inoculation of cut-discs of root. A great advantage of the method is in its efficiency and the current results can be obtained within 2 weeks from the moment of infection. As a result, the work on the isolation of fungi from carrot plants, the pure culture collection of strains: Alternaria radicina and Fusarium avenaceum was obtained. The characteristics and
morphology description of colonies of isolates of RR. Alternaria and Fusarium found in carrot plants taken from different ecological and geographical zones were given. The most aggressive isolates of the following ecological and geographical zones as Alternaria at Moscow and Rostov regions, Fusarium at Voronezh and Moscow regions were revealed. These isolates will be used as standards of aggressiveness for the test of newly isolated strains regarded as inoculum to conduct immunological experiments
in carrot breeding for resistance to Fusarium and Alternaria.
About the Author
L. M. Sokolova
Federal State Budgetary Scientific Research Institution "All-Russian Research Institute of Vegetable Growing"
Russian Federation
Russian Federation
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Review
For citations:
Sokolova L.M. CHARACTERIZATION OF ISOLATES OF ALTERNARIA AND FUSARIUM FOUND IN CARROT FROM DIFFERENT ECOLOGICAL AND GEOGRAPHIC ZONES. Vegetable crops of Russia. 2016;(3):84-91. (In Russ.) https://doi.org/10.18619/2072-9146-2016-3-84-91
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