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The rise in global temperature and increasingly frequent heat waves may severely disturb plant growth and productivity. Throughout the life cycle of vascular plants, which may last even thousands of years, various aboveground structures are constructed due to the activity of the shoot apical meristem (SAM). A pool of dividing, undifferentiated stem cells is maintained within a SAM, which facilitates...
The objective of the present study was to determine the effects of brassinosteroid application on the sex determination and floral growth of pomegranate flowers. Whole tress of Punica granatum ‘Mayhoş-8’ were sprayed with 0.001, 0.01, and 0.1 mg L⁻¹ 28-homobrassinolide (Hbr) at bud break. The selection of flowers was based on the appearance of a visible pistil/stigma and shape of the ovary of intact...
The study aimed to determine the genetic variability in pitch pine (Pinus rigida Mill.) growing in the Niepołomice Forest (southern Poland). In the late nineteenth and early twentieth century, Adolf Cieślar of the Department of Forestry Research in Mariabrunn near Vienna, Austria established the experimental crops of pitch pine. During the study, 227 trees that grew in seven subunits were considered;...
Arnica montana L. is a critically endangered and highly valued medicinal plant species in Europe. We show the inter-relationships between arnica and accompanying plant species, as well as soil factors, that promote the persistence of the studied forest arnica populations in terms of active protection of this species in the northeast region of Europe. The population characteristics and plant species...
Vegetation with high coverage by the alien species Mimulus guttatus was studied in the hilly regions of central Slovakia in 2015 and 2016. The floristic composition of these stands was recorded in ten phytosociological relevés corresponding to the Veronico beccabungae-Mimuletum guttati (alliance Glycerio-Sparganion) association. This association was reported for the first time in Slovakia in this...
Two species of the genus Petasites, P. kablikianus (occurs upstream) and P. hybridus (occurs downstream), form characteristic tall herb communities in two altitudinal zones of Carpathian streams and rivers. They are described as “altitudinal vicariants” due to their substitution with decreasing elevation on similar habitats along mountain streams. This would indicate that the phenomenon is conditioned...
Stanisław Batys Gorski (1802–1864) was a pharmacist, botanist, and entomologist. At the beginning of the nineteenth century, he headed the Vilnius University Botanical Garden and lectured on botany at the Imperial University of Vilnius and the Vilnius Medical and Surgical Academy. It is a known fact that the Herbarium of Vilnius University (WI) contains Gorski’s largest collection of vascular plants...
The variation in some adaptive characters of cedar needles was studied in two different regions of the Moroccan Middle Atlas that have different local environmental conditions and levels of genetic diversity. The two populations are localized in the Azrou and Ifrane regions. Tukey’s tests showed that the needle/brachyblast number (Nn/R), length (Nl), and needle width (Nw) showed the greatest variation...
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