Self-sterility
Термины кактусовода
Inability of pollen to fertilize the egg cells of its own flower.
Glossary of terms
A reference section with categories and short explanations.
Seed activation
Термины кактусовода
Treatment of seeds before sowing.
Shoot branching
Термины кактусовода
The development of several shoots connected to one another from a single original shoot as a result of the development of apical and lateral buds (growth points).
Seedlings
Термины кактусовода
Young plants that are morphologically distinguished from juveniles by the presence of cotyledons and the absence of developed above-ground organs.
Seed germination rate
Термины кактусовода
The potential ability of seeds to germinate, expressed as the percentage of seeds that have germinated in relation to the number sown.
Seed exchange list
Термины кактусовода
The exchange collection of botanical gardens.
Soil impedance
Термины кактусовода
Total electrical resistance.
Species habitat
Термины кактусовода
The area of distribution with the conditions necessary for life.
Soil microorganisms
Термины кактусовода
Very small, mostly unicellular organisms visible only under a microscope: bacteria, fungi, algae, etc., belonging to various taxonomic groups.
Species aggregation
Термины кактусовода
The pattern of distribution of individuals of a species in nature: isolated from one another, in small groups, as separate populations distant from each other and, finally, in large groups, clumps, patches and thickets.
Suberization
Термины кактусовода
Change in the walls of plant cells due to the deposition of lipid-like substances in them, which leads to the formation of hard tissues that worsen the appearance of plants but serve as protection against excessive transpiration, penetrati…
Shoot
Термины кактусовода
Axial organ of higher plants with apical growth; in scientific terms a broader concept than stem or trunk, although among hobbyists it refers to daughter lateral offshoots on mature cactus specimens or their stumps.
Soil porosity
Термины кактусовода
Presence of pores in the soil that provide its permeability to water and aeration of the plant root system.
Soil porosity
Термины кактусовода
The total volume of all pores or spaces between soil particles, caused by their heterogeneity and, consequently, their low tendency to stick together.
Soil-forming organisms
Термины кактусовода
The assemblage of organisms involved in soil formation.
Scions
Термины кактусовода
Plants that are grafted.
Shading
Термины кактусовода
Actions aimed at reducing the illumination of plants in order to prevent adverse effects of sunlight on the plant.
Seed germination (radicle emergence)
Термины кактусовода
See seed germination.
Seed germination
Термины кактусовода
The transition of seeds from a state of dormancy to active development, which begins with swelling of the seed, rupture of the testa and the emergence of the root.
Savannas
Термины кактусовода
Predominantly flat areas with a predominance of red-brown soils. Herbaceous cover predominates in combination with individual trees or groups of trees.
Self-pollination
Термины кактусовода
Pollination in which the stigma is pollinated by the pollen of the same flower or of another flower of the same plant, or the ability of pollen to fertilize the egg cells of its own flower; the highest degree of self-pollination is cleisto…
Selection
Термины кактусовода
Selection and propagation of individuals possessing some desirable trait.
Seed coat
Термины кактусовода
Protective covering, testa.
Seed
Термины кактусовода
Embryonic stage of seed plants.
Seedlings
Термины кактусовода
Young plants that have developed from seeds.
Sessile flowers
Термины кактусовода
Without or with a very short pedicel.
Syntype
Термины кактусовода
One of two or more specimens that served as the basis for the original description when the author did not designate any particular specimen as the holotype.
Scarification
Термины кактусовода
Damage to the seed testa (seed coat) to increase their ability to germinate. It is carried out mechanically or by treatment with concentrated sulfuric acid followed by thorough rinsing with water.
Sclerophytes
Термины кактусовода
Plants adapted to living in dry conditions without storing large amounts of water.
Sporadic
Термины кактусовода
(From Greek sporadikos - single) - appearing from time to time.
Stagnation
Термины кактусовода
(From Latin stagnum - standing water) a state of arrested plant growth, the transition from active life processes to forced dormancy, a temporary cessation of growth under unfavorable conditions.
Stem mealybug
Термины кактусовода
An insect pest that parasitizes the stems of succulents.
Soil sterilization
Термины кактусовода
Complete destruction of microorganisms, both harmful and beneficial, by steaming the soil in an autoclave or by other methods, bringing the temperature to the boiling point of water.
Seed stimulation
Термины кактусовода
Method of activating the vital activity of seed cells
Seed stratification
Термины кактусовода
Artificial partial or complete breaking of seed dormancy by exposing seeds to low (down to 2 °C) temperatures in moist peat, sand, perlite and other materials, or by brief freezing after soaking them in water.
Substrate
Термины кактусовода
Natural or artificially created multi-component soil mixture for growing plants. The composition of the substrate largely depends on the requirements of the species for which it is intended.
Succulent
Термины кактусовода
(From Latin succulentus — succulent, fleshy) — a group of species of perennial xerophytic plants adapted to existence in arid conditions thanks to the ability to store water in a highly developed specialized tissue — water-storing parenchy…
Schizocotyly
Термины кактусовода
"False pleiocotyly" - the phenomenon of the original cotyledons splitting into two, less often three, lobes or segments. At the same time, as a rule, the pattern of vascular connections characteristic of a dicotyledonous embryo can be trac…
Sciarids
Термины кактусовода
Pest insects whose larvae primarily damage the roots of seedlings.
Stamens
Термины кактусовода
A component of a flower's structure; includes the filament and the anthers.