Glossary of terms

A reference section with categories and short explanations.

Found: 403

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.

Corolla

Термины кактусовода

Part of the perianth consisting of petals, colored in various hues, which attract pollinators. Serves as an important morphological character in plant systematics.

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).

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.

Water regime of plants

Термины кактусовода

The process of water exchange. Balance is an optimal water regime; deficit is an unbalanced water regime

Temporary grafts

Термины кактусовода

A horticultural technique in which a slow-growing cactus is "grown on" a fast-growing rootstock, then is rooted and continues to live on its own roots.

Absorptive power

Термины кактусовода

The rate at which root hair cells absorb water and the nutrients dissolved in it.

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.

Forcing of plants

Термины кактусовода

Various methods of accelerating plant development or of bringing them out of dormancy into an active phase of growth.

Habitus

Термины кактусовода

(From Latin habitus - appearance, outward aspect) the external appearance of an organism, the natural form of a plant.

Galls

Термины кактусовода

Outgrowths on a plant that form as a result of the action of a parasite.

Halophyte

Термины кактусовода

(From Greek hals - salt and phyton - plant) - a plant that grows on highly saline soils.

Gametes

Термины кактусовода

(From Greek gametes - husband, gamete - wife) - sex cells, in the overwhelming majority of cases having a haploid set of chromosomes; during fertilization two gametes of opposite sexes fuse to form a diploid zygote.

Garúa

Термины кактусовода

Dense fog formations in the form of the finest drizzle on the Pacific coasts of Chile and Peru resulting from the temperature difference between the surrounding air and the cold coastal current.

Heliophytes

Термины кактусовода

Plants that prefer maximum sunlight.

Heliophobes

Термины кактусовода

Plants that prefer minimal sunlight.

Gene

Термины кактусовода

(From Greek genos - genus) a hereditary factor, a functionally indivisible unit of genetic material, a segment of a DNA molecule carrying information about the structure of the primary sequence of a somatic or enzymatic protein, transfer o…

Genesis

Термины кактусовода

Origin and development of species.

Generative zone

Термины кактусовода

Part of the stem bearing the organs of sexual reproduction.

Generative reproduction (sexual)

Термины кактусовода

Reproduction by means of seeds, seed reproduction of plants by sexual means as a result of cross-pollination by the transfer of pollen from the stamens of one flower to the stigma of a flower of another plant of the same species.

Generative organs of the plant

Термины кактусовода

(From lam. genero - I give birth, I produce) perform the function of sexual reproduction, otherwise - reproductive organs; in angiosperms (flowering plants) they are represented by female and male gametophytes. At present this concept is o…

Generative shoot

Термины кактусовода

Shoot bearing reproductive organs.

Genetics

Термины кактусовода

The science of heredity and variation of organisms.

Genetic memory

Термины кактусовода

The ability of plants transferred to a different habitat to retain, from generation to generation, certain characteristics of the annual development cycles of their ancestors in their homeland.

Genotype

Термины кактусовода

(From Greek genos - kin, origin and typos - imprint) the hereditary basis of an organism, the totality of all hereditary information (genes) of a given organism, determining the norm of its reaction under all possible environmental conditi…

Geophytes

Термины кактусовода

A life form of certain herbaceous plants whose renewal buds are located in the soil.

Hybrid

Термины кактусовода

(From Latin hybrida, hibrida — mixture) an organism obtained as a result of combining the genetic (hereditary) information of genotypically different (non-identical) organisms.

Hybridization

Термины кактусовода

Crossing by pollination of genetically different parental forms of organisms to obtain offspring possessing mixed characteristics of the parental pair; the process of obtaining offspring (hybrids) from dissimilar parents.

Hybrid plants

Термины кактусовода

Plants produced by hybridization.

Hygroscopicity

Термины кактусовода

The ability to absorb and retain water.