فرهنگ لغت باغبانی ( دیکشنری باغبانی)

Glossary

 

 

 

A   abcission zone n. A weakened layer of cells at the base of a leaf or fruit that allows the leaf or fruit to separate from the plant without injuring it.     abscise v. A flower, leaf, fruit, or other plant part separating from the plant at the abscission zone.     abscisic acid n. A plant growth regulator involved in the fruit ripening process.     accessory fruit n. A false fruit, whose fleshy parts are not derived from the ovary.     adhesion n. The sticking together of unlike objects or materials.     adventitious root n. Root that forms on shoot tissue.     adventitious shoot n. Shoot that forms on root tissue.     aggregate fruit n. A fruit derived from the separate ovaries of a single flower.     alkaloids n. Bitter-tasting compounds found in many plants, especially in the nightshade family (Solanaceae).     allelopathy n. A form of chemical protection in which a plant produces substances that inhibit the growth of nearby plants.     alternation of generations n. Describes the phenomenon in the plant kingdom in which plants alternate between a sporophyte phase and a gametophyte phase.     amino acid n. Nitrogen-containing organic compounds; the building blocks from which proteins are formed.     angiosperm n. Derived from the words for "vessel" and "seed"; a grouping of plants whose seeds are borne in protective structures.     annual adj. Describes a plant that germinates, grows, flowers, and produces seeds all in one growing season.     anther n. The part of the stamen-the male reproductive structure-that contains the pollen.     anthocyanin n. Red or blue pigment found in the cell sap.     antitranspirants n. A substance sprayed on plant leaves to reduce the rate of transpiration and conserve moisture.     apical bud n. A bud at the uppermost tip of a stem.     apical dominance n. The suppression of growth in lower buds and branches by the uppermost, or apical, bud.     apical meristem n. A region of actively-dividing cells at the tip of a root or stem; growth results in an increase in length.     aquaponics n. The integration of hydroponics (growing plants without soil) and aquaculture (the cultivation of the natural produce of water such as fish or shellfish).     asexual propagation n. Any means of multiplying plants that do not involve the union of gametes, and depend on mitotic, rather then meiotic, cell division.     asexual reproduction n. Propagation by means of plant parts; examples include new plants generated by creeping stems, bulb offsets, and layering.     atom n. The basic unit of matter. The smallest unit into which a chemical element can be broken and still retain its characteristics.     auxin n. A plant growth regulator that controls cell elongation; important in many plant growth responses such as phototropism and geotropism.     axillary bud n. A bud located in the axil of a leaf, at the joint where the leaf meets the stem. B   biennial adj. Describes a plant that grows for two years; it germinates and grows foliage the first season, and produces flowers and seeds the next season.     bilateral symmetry n. Flower type that can be divided into two symmetrical halves only by a single longitudinal plane passing through the axis.     binomial adj. Consisting of two names; for example, a botanical name consists of the genus name followed by the species epithet.     bio-engineered adj. Organisms created using genetic engineering.     biodiversity n. The number of different species-plants or animals-in an area.     bloom n. A powdery, bluish-white coating on some plants’ leaves and fruits. When a plant part’s waxy cuticle occurs in tiny rodlets that protrude from the surface, it results in a visible bloom. (Also, another word for flower.)     budding n. A form of grafting in which a bud is inserted under the bark of another plant.     bulb n. Modified stem consisting of fleshy leaf bases; used for food storage and asexual propagation. C   carbohydrate n. An organic molecule consisting of a chain of glucose molecules; includes sugars, starches, and cellulose.     carotenoid n. Photosynthetic accessory pigment contained within the chloroplast. Carotenes and xanthophylls are carotenoids.     cellulose n. A large molecule made up of a chain of glucose molecules; found primarily in plant cell walls.     centromere n. Location on a chromosome where sister chromatids are held together.     chilling requirement
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