Dandaweedman

A
ABA- abscisic acid
Abaxial- oriented away from the stem meristem; lower surface
Accessory Cannabinoids- cannabinoids (CBC, CBD, CBN) which probably interact with the primary cannabinoids (THC) to alter their effect
Accessory Pigment- pigment other then the primary pigment (clorophll) which collects solar energy
Acclimatize- become adapt to new enviromental conditions
Achene- a hard-shelled seed encased by a simple thin closed shell
Adaxial- oriented toward the shoot meristem
Adnate- attached at the margin
Adventitous Roots- roots that appear spontaneously from stems and old roots
Alternate Phyllotaxy- leaves appear singly in a loose staggered spiral along the stem
Aneuploid- an organism with an unbalanced set of chromosomes (i.e., 2n-1 or 2n+1)
Anthesis- the time of maturation of a flower
Anthocyanin Pigment- an accessory pigment, usually red or purple
Anticlinal- perpendicular to the surface
Apical- tip or top position
Arborescent- tree-like
Asexual Propagation- vegetative reproduction by cloning, producing offspring with the genotype identical to that of the single parent
Auxins- a class of plant hormones

B
Back-crossing- crossing of an offspring with one of the parents to reinforce a parental trait
Bract- small reduced leaflet in Cannabis that appears below a pair of calyxes
Bulbous Trichome- small stalkless glandular trichome


C
Callus- undifferentiated group of cells, which under proper conditions will differentiate to produce roots and stems
Calyx- five-part carpel structure of the staminate flower; or, five-part fused tubular sheath surrounding the ovule and pistils of the pistillate flower
Cambium- layer of cells which divides and differentiates into xylem and phloem
Cannabaceae- family to which only Cannabis (marijuana) and Humulus (hops) belong
Cannabinoid- cyclic hydrocarbon which is found only in Cannabis, derived from a terpene molecule and a cyclic acid molecule
Cannabinoid Profile- ratio and levels of major cannabinoids found in a particular individual or strain of Cannabis
Cannabis- genus name of marijuana or hemp
Capitate-sessile Trichome- resin-producing glandular trichome with a stalk
Capitate-stalked Trichome- resin-producing glandular trichome without a stalk
"Captan"- a commercial fungicide
Carotenoid Pigment- an accessory pigment, usually yellow, orange, red or brown
Carrier- a plant infected with a virus but exhibiting no symptoms due to its high resistance
CBC- cannabichromene
CBD- cannabidiol
CBDV- cannabidiverol
CBG- cannabigerol
CBN-cannabinol
CBNV- cannabiverol
CBT- cannabitriol
CCY- cannabicyclol
Cellular Cloning- asexual propagation of new individuals from small groups of single cells, as distinct from layers or cuttings
Centripetally- outward from the center
Cerebral- pertaining to the mind or head, mental
Chemotype- a specific chemical phenotype which in Cannabis is usually based on ratios of cannabinoids
Chemovars- cultivars or races of Cannabis defined by their particular chemical composition
Chlorosis- yellowing of plant tissues resulting from the breakdown of chlorophyll
Chromosome- strain of DNA-protein complex in the nucleus of a cell along which genes are found
Clone- an asexually produced offspring preserving parental genotype
Colchicine- a dangerous chemical used to induce polyploid mutations in plants
Cotyledons- seed leaves which are present in the embryo and first appear upon germination
Critical Daylenght- maximum daylenght which will induce flowering
Crossing- mating of two organisms
Crossing Over- switching entire pieces of genetic material between two chromosomes
Crystaloids- crystalline globules in the cytoplasm
Cultivar- a variety of plant found only in commercial cultivation
Cuticle- covering of plant wax on the surface of the epidermis
Cuttage- rooting a piece of stem (cutting) removed from a parent plant
Cytokinins- a class of plant growth substances (hormones)


D
Dagga- African Cannabis
Damping-off soil-borne fungus disease which attacks seedlings and young plants
Decarboxylation- loss of a carboxyl (COOH) group from a molecule
Decussate Phyllotaxy- leaves appear in opposite pairs along the stem
Dehiscence- release of pollen from the stamens upon opening of the staminate flower
Differentiation- (1) process of mixing heterozygous gene pools by crossing to promote variation in the offspring. (2) development by a plant of specialized tissues, e.g., roots, calyxes, pistils
Dihybrid Cross- a hybrid cross for two traits
Dioecious- staminate and pistillate organs develop on separate plants
Diploid- the 2n or vegetative condition where each cell has the usual two sets of homologous chromosomes( in Cannabis 2n=20)
Disinfectant- a treatment that kills disease organisms on the exterior of the seed or plant
Distal- oriented away from
Domesticated- cultvated or spontaneously appearing in a cultivated area
Dominant Trait- the trait which is expressed in the phenotype of a heterozygous gene pair, indicated by a capital letter, i.e., "W" is dominant; "w" is recessive
Drip Irrigation- irrigation system which delivers water to individual plants in small amounts at regular, frequent intervals


E
Ecosystem- community of organisms living interdependently in the physical environment
Ecotype- a strain of plant adapted to a specific niche in the ecosystem
Embolism- bubble of air in the transpiration stream of a cutting
Endosperm- nutrient tissue contained within the seed
Endothecium- subepidermail layer of the pollen sack wall
Endozoic- internal
Epicotyl- stem between the cotyledons and the first pair of true leaves
Epidermal Layer- outer layer of plant tissue
Epigamic- not controlled by genes
Epinasty- downward curling of cotyledons and leaves at night
Essential Oils- compounds with strong aromas contained in the secreted resins of plants
Etiolation- growth of a plant in total darkness to increase the chances of root initiation

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