Kuchilyak
Термины кактусовода
Hilly elevations representing outcrops of ancient crystalline rocks. They may have a complex profile as a result of weathering or flat "table" tops.
Glossary of terms
A reference section with categories and short explanations.
Lectotype
Термины кактусовода
A specimen selected as the nomenclatural type from the original material not by the author of the description but by subsequent researchers (in the absence or loss of the holotype)
Leaf mold
Термины кактусовода
Soil composed of decayed leaves - leaf mold
Lomas
Термины кактусовода
The plant formation of the Pacific coastal deserts of South America, which includes ephemerals, epiphytes, etc., whose vegetation occurs in the winter and spring periods under the influence of frequent fogs and drizzle (garua).
Magnesium deficiency
Термины кактусовода
A diseased condition of a plant caused by a shortage of magnesium in the soil.
Mother (parent) plant ("mother plants")
Термины кактусовода
The term, widely used among collectors, designates mature fruiting plants, or their "stumps", that serve as a source for obtaining cuttings and daughter shoots from which new full-fledged plants are obtained for their subsequent rooting or…
Mesophytes
Термины кактусовода
(From Greek metos - middle, intermediate and phyton - plant) plants that live in conditions of more or less sufficient, but not excessive, moisture (an intermediate position between xerophytes and hygrophytes).
Meiosis
Термины кактусовода
(From Greek meiosis - diminution) - a special type of cell division that results in a reduction (decrease) in the number of chromosomes and the transition of the cell from the diploid state to the haploid state.
Meristem
Термины кактусовода
Formative plant tissue capable of cell division and producing new cells that ensure additional growth. Distinctions are made between the primary meristem in the region of the shoot apex or root tips, the secondary meristem located in the c…
Species habitat
Термины кактусовода
The area of distribution with the conditions necessary for life.
Mechanism of negative phototropism
Термины кактусовода
The ability of a plant or its parts to grow in a direction opposite to that of the sun's rays, i.e., to grow into the "dark".
Mycoplasmas
Термины кактусовода
Microorganisms possessing characteristics of both bacteria and viruses. They are causal agents of various diseases of plants and animals, including humans.
Soil microorganisms
Термины кактусовода
Very small, mostly unicellular organisms visible only under a microscope: bacteria, fungi, algae, etc., belonging to various taxonomic groups.
Micropyle
Термины кактусовода
(From Greek mikros - small, pyle - entrance, opening) - a narrow channel in the integuments of the ovule of seed plants, through which the pollen tube penetrates to the nucellus, the pollen entry.
Micropropagation [micropropagation, cloning]
Термины кактусовода
A method of vegetative propagation by culturing isolated tissues or cells in artificial media.
Microflora
Термины кактусовода
The community of microorganisms present in the soil.
Mimicry
Термины кактусовода
Resemblance of particular plant organs to various objects of the surrounding environment.
Mineral constituents
Термины кактусовода
Inorganic compounds of macro- and microelements that are introduced to or present in the soil, mostly phosphate, sulfate and carbonate salts of potassium, calcium, sodium and magnesium.
Modifications
Термины кактусовода
Changes in an organism's phenotype not associated with changes in its genotype.
Wet rot
Термины кактусовода
Fungal disease of cacti.
Monoculture
Термины кактусовода
Cultivation of a single plant species.
Monotypic genus
Термины кактусовода
A genus represented by only one species.
Monstrose form
Термины кактусовода
A growth anomaly that leads to the formation of peculiar ("deformed") specimens consisting of many unevenly growing shoots.
Morph
Термины кактусовода
(From Greek morphe - kind, form) - a group of phenotypes within a species or population that is markedly distinct in appearance. Species and populations that have different morphs are called polymorphic.
Morphological character
Термины кактусовода
Characteristic of any plant organ that allows it to be distinguished from others and assigned to a particular group in classification.
Plant morphology
Термины кактусовода
Branch of botany that studies the regularities of structure and the processes of morphogenesis in plants during the life processes of their generations from their origin to the present species (in their ontogeny and phylogeny).
Rootlets
Термины кактусовода
Thin lateral root branches that break off when the root is removed from the soil.
Mutagen
Термины кактусовода
(From mutation and Greek genes - generating) - a physical or chemical factor that increases the frequency of occurrence of mutations.
Mutation
Термины кактусовода
An abrupt, discontinuous, heritable and stable change affecting the characteristics of plants.
Radicle emergence
Термины кактусовода
The emergence of the embryonic root through the rupture of the testa during seed germination.
Heredity
Термины кактусовода
The property of organisms that ensures material and functional continuity from parents to offspring.
Naturalization of plants
Термины кактусовода
The ability of plants to adapt and reproduce in natural conditions that are new to them.
Necrosis
Термины кактусовода
Death of the tissues of a localized part of an individual while the rest of the organism remains alive (burn, frostbite).
Necrophages
Термины кактусовода
Organisms that consume the corpses of other organisms.
Nectaries
Термины кактусовода
Specific structures in the areoles of certain cacti that produce a sweet liquid attracting insects.
Nematodes
Термины кактусовода
Parasitic worms.
Nematicides
Термины кактусовода
Poisons that kill nematodes.
Neotype
Термины кактусовода
A specimen selected to serve as the nomenclatural type until all the material on which the name of the taxon was based has been collected.
Neophytes
Термины кактусовода
Plants that have recently appeared in a given locality, newly introduced.
Nomenclature
Термины кактусовода
A universal and stable system of names used in various fields of science and technology, including botany (botanical nomenclature).