What is it about?
For the first time on the territory of the Russian Federation, races 713, 733 and 734 of the causative agent of the downy mildew of sunflower were discovered. By the method of multiple cross re-inoculations from individual differential lines, simultaneous presence of P. halstedii races of different virulence (334+ 710 or 730) in one sunflower plant was discovered. The fact of mixture of races of this parasite in one plant was not previously established in Russia.
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Why is it important?
Some of new races were not found before in all Europe and Asia
Perspectives
Disturbing findings important both for Russia and for neighboring countries, as well as for phytopathologists, breeders and producers of sunflower.
Mariw Maria V. Iwebor
Federal State Budgetary Institution "All-Russia Institute of Oil Crpps" (VNIIMK)
Read the Original
This page is a summary of: Occurrence and Distribution of Races 713, 733 and 734 of Sunflower Downy Mildew Pathogen in the Russian Federation, Helia, November 2018, De Gruyter,
DOI: 10.1515/helia-2018-0015.
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