The study of micromycetes infestation on flower buds, flower petals and seeds from 10 taxa of Rhododendron sp. was conducted during 2010-2012. Mycological analysis was comprised of 1,500 specimens of buds and petals a...The study of micromycetes infestation on flower buds, flower petals and seeds from 10 taxa of Rhododendron sp. was conducted during 2010-2012. Mycological analysis was comprised of 1,500 specimens of buds and petals and 500 seeds of Rhododendron sp.. It was shown that the necrosis and dieback of buds were caused by complex micromycetes （43 species）, with dominants Pestalotiopsis sydowiana, Alternaria alternata, Truncatella truncata and Epicoccum nigrum. Watery brown spots on the flower petals, resulting in the dieback of flowers, were caused by 38 species, including the most common P. sydowiana, A. alternata and Trichoderma viride. The seeds were contaminated by 18 species, and in addition to the above, the following species were associated： Oidiodendron tennuissimum, Davidiella macrocarpa and Phoma leveillei. The results of the mycological analysis confirmed the diversity spectrum of micromycetes species that inhabit the infested Rhododendron buds, flowers and seeds. The research revealed which taxa attracted the largest number of colonies and species of fungi.展开更多
文摘The study of micromycetes infestation on flower buds, flower petals and seeds from 10 taxa of Rhododendron sp. was conducted during 2010-2012. Mycological analysis was comprised of 1,500 specimens of buds and petals and 500 seeds of Rhododendron sp.. It was shown that the necrosis and dieback of buds were caused by complex micromycetes （43 species）, with dominants Pestalotiopsis sydowiana, Alternaria alternata, Truncatella truncata and Epicoccum nigrum. Watery brown spots on the flower petals, resulting in the dieback of flowers, were caused by 38 species, including the most common P. sydowiana, A. alternata and Trichoderma viride. The seeds were contaminated by 18 species, and in addition to the above, the following species were associated： Oidiodendron tennuissimum, Davidiella macrocarpa and Phoma leveillei. The results of the mycological analysis confirmed the diversity spectrum of micromycetes species that inhabit the infested Rhododendron buds, flowers and seeds. The research revealed which taxa attracted the largest number of colonies and species of fungi.
