Phytophthora hedraiandra occurs on rhododendron in Slovenia

Дата публикации

Пт, 15 Сен 2006, 00:00

Последнее обновление

Сен. 14, 2006, 9:01 д.п.

Report Number

SVN-02/3

Страна

Slovenia

Идентификационная информация о вредном организме

Phytophthora hedraiandra - (PHYTHD)

Статус оповещения

Final

Растения-хозяева

Rhododendron

Pest Status (old values from ISPM 8 -1998 )

• Present: under eradication

Pest Status (ISPM 8 - 2021)

• Present: not widely distributed and under official control

Географическое распространение

Kranj - Gorenjska region (central Slovenia)

Краткое описание

A similar isolate was obtained in both years, which was then inoculated within four days on cornmeal agar (CMA) and incubated at 25 C. The cultures grew around 6 mm daily. A few papillate, subglobose sporangia appeared after two weeks, occurring abundantly when mycelial plugs were submerged in pond water. Oogonia were 29 -33 µm (31 µm) and oospores were 24-29 µm (26 µm); amphigynous antheridia were infrequent. The morphological characters resembled those described for Phytophthora cactorum or P. hedraiandra.

Опасность

In July 2004 and July 2005, necrotic lesions on shoots were found, with dieback and wilting in severe cases, on established rhododendron bushes.

Файлы отчета

Веб-сайт

http://www.bspp.org.uk/ndr/jan2007/2006-64.asp