Pollen viability and longevity in Juniperus taxa native to Slovakia.

Pollen viability, dispersion ability and longevity during deep-freezer storage were studied in three Juniperus taxa distributed in Slovakia. All these characteristics of pollen are closely related to the pollination and/or fertilization success of the junipers in nature. Pollen viability varied considerably between the three populations of J.

Effects of Inoculations on Photosynthetic Behaviour and Induced Defence Responses of Plant Volatiles in Field-Grown Hybrid Poplar Tolerant to Bark Canker Disease.

Bark cankers accompanied by symptoms of decline and dieback are the result of a destructive disease caused by infections in woody plants. Pathogenicity, gas exchange, chlorophyll fluorescence, and volatile responses to and inoculations were studied in field-grown 10-year-old hybrid poplar plants. The most stressful effects of on photosynthetic behaviour were found at days 30 and 38 post-inoculation (p.

Differences in survival and phenotypic traits of curly birch preserved by heterovegetative propagation: a case study from Central-East Europe.

Curly birch (Betula pendula Roth. var. carelica [Merklin] Hämet-Ahti) is a disappearing representative of the Betula genus facing a regeneration failure in a large part of its natural distribution in Europe.

Physiological, vascular and nanomechanical assessment of hybrid poplar leaf traits in micropropagated plants and plants propagated from root cuttings: A contribution to breeding programs.

Micropropagated plants experience significant stress from rapid water loss when they are transferred from an in vitro culture to either greenhouse or field conditions. This is caused both by inefficient stomatal control of transpiration and the change to a higher light intensity and lower humidity. Understanding the physiological, vascular and biomechanical processes that allow micropropagated plants to modify their phenotype in response to environmental conditions can help to improve both field performance and plant survival.