Определение вида возбудителя мучнистой росы тыквенных культур в полевых и тепличных очагах

Abstract

The synonyms of cucurbitaceous crops powdery mildew causative agents are presented in the paper. The criteria used for species identification according the anamorphic stage are given and their taxonomic value is characterized. The authors analyzed 6 samples of powdery mildew pathogens isolated from zucchini, cucumbers and melons. It is shown that 5 isolates belong to the species Golovinomyces cichroacearum, and one is Podosphaera xanthii. A perfect stage has not been detected in any of the isolates. None of the G. cichroacearum isolates was able to infect cucumbers (cv. Konkurent) in the field. The detection of the pathogen species should be taken into consideration by plant protection specialists and by breeders when breeding cucurbitaceous crops for plant resistance against the certain species of pathogens or their complex.

Keywords

• cucurbitaceous crops
• powdery mildew
• golovinomyces cichoracearum
• podosphaera xanthii
• identification
• anamorphic stage