Issn 305-9397. Ғылым және білім. 2022. №1-1 (66) issn 2305-9397
Ауыл шаруашылығы ғылымдары
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160 agent of which is a quarantine object for Kazakhstan. The disease is caused by the bacterium Erwinia amylovora (Burrill) Winslow et al. Bacterial fire blight mainly affects apple (Malus domestica) and pear (Pyrus communis). The disease affects all organs of the apple tree: flowers, blossoming buds, fruits, leaves, shoots, branches of various orders, and trunk bark. To avoid further spread and development of fire blight on the territory of Kazakhstan, it is very important to grow varieties of fruit trees resistant to fire blight. The article presents the results of identifying the causative agent of fire blight on the examined apple varieties in the main industrial zone of horticulture, the prevalence of the disease and the varieties most susceptible to damage are established. As a result of bacteriological analysis of the selected samples, 13 bacterial isolates were isolated from varieties: Aport, Voskhod, Sinap Almaty, Maksat, Golden Delicious, Candy, Pinova, Pink Lady, Idored, Gala, Delzhons, Wilton Star, Red Topaz, which, according to morphological and cultural signs were similar to those of Erwinia amylovora, the causative agent of fire blight. Molecular identification of the pathogen E. amylovora by PCR showed that out of 8 samples of bacterial cultures, three cultures (cultivars Aport, Sinap Almatinsky, Pinova) were identified as phytopathogenic bacteria Erwinia amylovora. Ключевые слова: яблоня, болезнь, бактериальный ожог, фитопатологический мониторинг, сорта, Erwinia amylovora, устойчивость сортов, распространенность болезни. Key words: apple tree, disease, fire blight, phytopathological monitoring, varieties, Erwinia amylovora, resistance of varieties, prevalence of the disease. жүктеу/скачать 7.12 Mb. Достарыңызбен бөлісу:
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