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Iskalni niz: "ključne besede" (Acer) .

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Clustering of field maple populations from different ecological conditions in Bosnia and Herzegovina based on discriminant analysis of morphological traits
Stjepan Kvesić, Dalibor Ballian, Mirzeta Memišević Hodžić, 2023, izvirni znanstveni članek

Povzetek: Acer campestre L. is naturally distributed in most of Europe. The species can serve as a valuable model for researching the sensitivity of populations to habitat fragmentation. This research aims to determine whether there is a differentiation of field maple populations based on their division by ecological-vegetation regions, precipitation amounts, temperatures, and altitudes of the populations. The material was collected from 25 populations in Bosnia and Herzegovina, from different ecological-vegetation areas, with twelve trees per population and five fruits and ten leaves per tree. Then, 10 fruit properties and 19 leaf properties were analyzed. A discriminant analysis was performed for population groups based on the ecological-vegetation area, amount of precipitation, average annual air temperature and altitude. The discriminant analysis results showed the distinguishing of groups of populations in the sub-Mediterranean area, and groups of populations with an average annual temperature of 14.00 to 15.99 °C. There was no clear separation of the groups according to the average annual precipitation or altitude. The analysis of the connection established that the influence of environmental factors is more pronounced compared to geographical factors. The key ecological variable that determines morphological separation was temperature and to a lesser extent precipitation. The results of this research will be used in planning of afforestation of suitable, unvegetated land and extreme habitats in the southern and southwestern parts of Bosnia and Herzegovina with Acer campestre.
Ključne besede: Acer campestre, discriminant analysis, ecological-vegetation reionization, population groups differentiation
Objavljeno v DiRROS: 19.03.2024; Ogledov: 100; Prenosov: 56
.pdf Celotno besedilo (1,11 MB)
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An outbreak of Verticillium dahliae on sycamore maple in a forest stand in Slovenia
Ana Brglez, Zina Devetak, Nikica Ogris, Sebastjan Radišek, Barbara Piškur, 2024, izvirni znanstveni članek

Povzetek: Verticillium dahliae Kleb., the causal agent of Verticillium wilts, is a devastating plant disease affecting many plant species. Fungus V. dahliae was detected in a partially artificially established Acer pseudoplatanus L. forest stand in central Slovenia. This finding incited further study about the risk of different sources of V. dahliae isolates for maples in forests and the pathogenicity of three V. dahliae isolates of different origins was tested on saplings of A. pseudoplatanus, A. platanoides L., and A. campestre L. The inoculated saplings exhibited disease symptoms, i.e., leaf necrosis and wilting. At the end of the pathogenicity test, typical xylem browning was visible on the cross-sections, and the pathogen was successfully re-isolated. The isolates showed significant differences in their pathogenicity to specific maple hosts, with the agricultural isolate (originated from bell pepper) being the most aggressive on all three maple species. The disease severity index (DSI) and relative area under the disease progress curve (rAUDPC), as well as the success of re-isolation, indicate that A. platanoides is the most susceptible to inoculation with V. dahliae. In addition, significant differences in sapling biomass were observed between treated and control plants. These results suggest that maples in forest stands are threatened by V. dahliae, and biosecurity measures should be considered and implemented in forest management to reduce the transmission and potential spread of the pathogen.
Ključne besede: Verticillium wilt, Acer spp., pathogenicity test, Disease severity index, DSI, Area under the disease progress curve, AUDPC, biosecurity
Objavljeno v DiRROS: 07.02.2024; Ogledov: 177; Prenosov: 79
.pdf Celotno besedilo (1,75 MB)
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Poročilo o preskusu št.: LVG 2022-208 : vzorec št. 2022/00698/AK
Andreja Kavčič, Ana Brglez, Nikica Ogris, 2022, izvedensko mnenje, arbitražna odločba

Ključne besede: varstvo gozdov, morfološke analize, Acer pseudoplatanus, žuželka, Anisandrus dispar
Objavljeno v DiRROS: 16.11.2022; Ogledov: 384; Prenosov: 111
.pdf Celotno besedilo (1,16 MB)

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