sdu faculty of forestry journal special edition 2009 - Orman Fakültesi

SDÜ Faculty of Forestry Journal
Table 1. Occurrence of Ash dieback on some monitored plots.
LOCALITY DATE OF COLLECT. CONCLUSION NOTICE POSITION
1 Arboretum of Křtiny 26.09.2007
2 Ochoz u Brna 29.09.2008 Pozitive
126
Pozitive Fraxinus excelsior
"Pendula"
3 Hradčany u Brna 06.10.2008 Pozitive
Symptom of disease
4 Brno Lesná - Soběšice 08.10.2008
5 Lomnice u Tišnova (Sýkoř hill) 12.10.2008 Pozitive Shoots along the way
Symptom of disease
Regeneration under the
6 LZ Židlochovice - NPR Cahnov 13.10.2008
Symptom of disease
cover of older stand
7 District Lednice-Valtice area - Rendez vous 30.10.2008
8 LZ Židlochovice - Ivaň 04.02.2009
9 Kroměříž - zámeček 07.02.2009
Symptom of disease
Symptom of disease
10 LZ Židlochovice – forest district Tvrdonice 18.02.2009 Pozitive Compartment 909
11 LZ Židlochovice – forest district Tvrdonice 18.02.2009 Symptom of disease Compartment 904
12
Forest nursery Hadovna - region
Kroměříž 30.05.2009 Symptom of disease
13 Arboeko co. - Smržice 30.04.2009 Symptom of disease
49°19'7"N/
16°44'35"E
49°15'24"N,
16°43'56"E
49°19'36"N,
16°25'58"E
49°14'37.5"N,
16°37'5.728"E
49°24'34.51"N,
16°24'46.765"E
48°39'17.223"N,
16°56'32.378"E
48°44'54.48"N,
16°47'39.299"E
48°55'18.304"N,
16°34'56.446"E
49°16'55.536"N,
17°27'50.746"E
48°47'29.587"N,
17°4'21.828"E
48°47'23.761"N,
17°4'21.588"E
49°18'24.285"N,
17°39'4.909"E
49°23'56.145"N,
17°11'26.528"E
Dry lesions show circular shape at first, they gradually change into elliptical
oblong, depressed necrosis, which gradually extends on the surface; it was
observed in most places. Below the bark, the dieback of the cambium is evident.
The necrosis extends both into transpiration flow and assimilation flow. The
infection gets from necrosis also into the wood part, which is discolored by grey
brown. One year shoots die above the necrosis especially in autumn months (from
end of August till October). Necrosis on 2 years old and perennial shoots can be
occluded and there can be superficial cankers with callus on the edge created. Dark
brown necrosis is formed on petioles and trees shed premature, from end of August
till October, their still green leaves. One year old, rarely also older shoots die on
older trees. Typical of this is a creation of compressed crown and disturbance of
parallel trunk.
Hymenoscyphus albidus is noted by Kowalski and Holdenrieder (2009) as the
teleomorph of Chalara fraxinea. The species is widespread in Europe. According
to the literature, H. albidus occurs exclusively on ash petioles from ash litter
(Breitenbach and Kranzlin, 1984; Ellis and Ellis, 1985). In the CR, it is well known
as a saprophyte on leaf-stalks in the litter, it is considered to be a common species
in mycofloristic research.