Biology features of fungus phomopis helianthi m. And pathogenesis phomopsis of sunflower
Journal Title: Біоресурси і природокористування [Biological Resources and Nature Management] - Year 2018, Vol 10, Issue 3
Abstract
One of the main issues of successful annual sunflower growing is resistance against the necrothrophic fungus Phomopsis helianthi Munt, which is capable to destroy the entire crop of sunflower. The aim of research was studying cycle of development fungus Phomopsis helianthi M and the features of sunflower plants defeat. The investigations were carried out in the field in Genicheskiy district of Kherson region and in Kherson regional phytosanitary laboratory. During sunflower growing season, the pathogenesis of fomopsis occurs in all plant organs above the ground. In seeds for a long period the disease is in a latent form. Its first symptoms in the form of pycnidia and clarification of affected tissue of the seminal rind are manifested during the germination of seeds. The presence of Diaporthe helianthi Munt Cv, et al., with diatoms and ascospores on seeds was established, which indicates the possibility of spreading the disease by seed. The main source of origin sunflower fomopsis in the field is ascospores, which are formed in perithets, which are located in stroma. The last are found on unplowed plant remains. During the vegetation, the pathogen forms an anamorphic stage, and at the end - a teleomorphic stage.
Authors and Affiliations
Ye. V. Syvoded, M. M. Kyryk, O. V. Kolesnichenko, V. I. Melnyk
Keywords
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- EP ID EP408306
- DOI 10.31548/bio2018.03.005
- Views 99
- Downloads 0
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