Variability
Термины кактусовода
Minor morphological differences among individuals of a single species, both within a population and between populations separated from each other by considerable distances.
Glossary of terms
A reference section with categories and short explanations.
Variegated plants
Термины кактусовода
Plants with an abnormal distribution of the green pigment — chlorophyll — in their cells, which leads to the appearance of localized color changes on stems (leaves) in the form of patches of various shapes and sizes.
Vegetative hybridization
Термины кактусовода
Change in hereditary constitution and the creation of new forms by crossing plants of different species.
Vegetative reproduction
Термины кактусовода
Asexual, non-seed reproduction of plants in which a new individual is formed by the rooting or grafting of a part of the parent plant. Parts of the stem, leaves, roots, fruits and even individual cells are used for vegetative reproduction.
Vegetative organs
Термины кактусовода
Parts of the body of higher plants (root, stem) that perform the main functions of nutrition, growth and exchange of substances with the external environment. They do not participate directly in sexual reproduction, but can serve as organs…
Vegetation period
Термины кактусовода
The time during which a plant exhibits active life processes from awakening in spring until entering winter dormancy.
Vegetation
Термины кактусовода
The state of active life of a plant, manifested in the uptake of nutrients, growth, development of generative organs and other components of the annual cycle.
Virulent pathogen
Термины кактусовода
A pathogenic microorganism, i.e., a microorganism capable of causing disease.
Vitality
Термины кактусовода
The set of an organism's characteristics that determine its degree of viability.
Vegetation degradation
Термины кактусовода
Gradual deterioration, a decline in the level of organization of a plant community, caused by changes in environmental conditions or by human economic activity.
Vitality
Термины кактусовода
The degree of a plant's resistance to environmental disturbances, the intensity of the organism's life processes, the degree and measure of its resilience.
Variability
Термины кактусовода
The presence of heterogeneity and differences among individuals of the same species.
Vascular bundle
Термины кактусовода
A system of several types of tissues interconnected with one another that perform the function of conducting water and nutrients through the plant, in other words — the assemblage of conductive, mechanical, meristematic, and parenchymatous…
Variety
Термины кактусовода
A taxonomic unit accepted in botany, referring to a group of individuals of a single species that have stable morphological deviations from the "typical" species, which are of minor importance. It occupies a position between subspecies and…
Vegetation
Термины кактусовода
The assemblage of plant communities (phytocoenoses) of the planet or its parts.
Vegetative bud
Термины кактусовода
That produces a vegetative shoot after unfolding.
Vegetation cycle
Термины кактусовода
Periodically recurring phases of growth, flowering, and fruiting, alternating with stagnation (dormancy).