Radovi, Vol. 46 No. 1, 2018.
Izvorni znanstveni članak
Qualitative Properties of Penduculate Oak Acorns (Quercus robur L.) from Spačva Basin and the Consequences of its Inadequate Storage
Marija Gradečki-Poštenjak
; Hrvatski šumarski institut, Zavod za genetiku, oplemenjivanje šumskog drveća i sjemenarstvo, Jastrebarsko, Hrvatska
Sanja Novak Agbaba
; Hrvatski šumarski institut, Zavod za zaštitu šuma i lovno gospodarenje, Jastrebarsko, Hrvatska
Nevenka Ćelepirović
; Hrvatski šumarski institut, Zavod za genetiku, oplemenjivanje šumskog drveća i sjemenarstvo, Jastrebarsko, Hrvatska
Darko Posarić
; Hrvatske šume d.o.o., UŠP Vinkovci
Sažetak
The largest forest complex of pedunculate oak Spačva is situated in eastern part of Croatia in
the river basin Spačva and Studva. It occupies area of 39 789 ha, and makes one fi fth of all
pedunculate oak forests in Croatia.
Pedunculate oak is a climatogenic species and it constitutes principal forest communities.
Results of all the negative pressures are visible through irregular and weaker crop of seeds and disturbed natural forest regeneration. Natural regeneration is hampered due to the lack of adequate reproductive material. Collecting seed material in good crop year and ensuring high quality storage of acorns provides the required amount of seeds for successful natural regeneration.
The objectives of this study were to determine the quality of freshly harvested and inadequate storaged acorns, and the health condition and types of pathogenic fungi which infected acorns during storage.
Samples were collected on experimental plots in physiologically mature stands of diff erent
ages. Acorn quality was determined by the ISTA method and the health status of seed by the
phytopathological research methods. Germination of fresh acorns was high, varies from 78 % to 97 %. Health condition of acorns was good with weak symptoms of fungal diseases and insects damages. After storage of untreated acorns under unfavorable conditions for a period of one year germination decreased significantly and ranged from 6 % to 16 %. The share of the disease and rotten acorn was 84 % to 94 %. Seven genera of fungi were detected on inadequate storaged acorns: Penicillium, Phomopsis, Ophiostoma, Ciboria, Fusarium, Alternaria and Stereum.
Ključne riječi
acorn; seed quality; inadequate storage; pathogenic fungi
Hrčak ID:
305156
URI
Datum izdavanja:
1.6.2018.
Posjeta: 206 *