Dandaweedman

R
Radicle- embryonic root tip
Recessive Trait- the trait which is not expressed in the phenotype of a heterozygous recessive gene pair but only expressed in a homozygous recessive gene pair
Recombination- formation in offspring of a new gene pair different from those pairs found in either parent
Rejuvenation- growth on a mature, flowered plant such that the new growth is juvenile, prefloral limbs
Retting- the breakdown of tissues and epidermal layer that join fibers into bundles so that the individual fibers are freed
Roguing- removal of undesirable plants from the population
S
Scion- stem shoot tip used in a graft
Selection- choosing of favorable offspring as parents for future generations
Senescence- the decline towards death of an organism
Sessile- attached flush with the surface
Sex Limited- a trait expressed by only one sex
Sex Linkage- genes occurring on the sex chromosomes
Sexual Propagation- reproduction by recombination of genetic material from two parents through the union of two gametes
Sinsemilla- the phrase sin semilla is Spanish, originating from Mexico, and means literally "without seed"; the English word sinsemilla means mature seedless pistillate marijuana grown by removing male plants to prevent pollination
Soil Atmosphere- gaseous portion of the soil
Soil Solution- liquid portion of the soil
Somatic- pertaining to the physical body
Sporogenous Tissue- tissue related to the development of spores (pollen)
Sport- plant or portion of a plant which carries and expresses a spontaneous mutation
Stamen- male pollen-producing organs consisting of two parts: anther and filament
Stamenoia- excessive and premature concern on the part of a cultivator that staminate plants might pollinate the precious sinsemilla crop
Staminate- male, possessing stamens
Stipule- reduced bractlet on either side of the petiole at the stem and subtending each calyx
Stock- stem section with roots attached used in a graft
Stomate- pore on the epidermal surface of a plant which allows the interchange of air and water vapor
Strain- a line of offspring derived from common ancestors
Subtends- situated below
Symplast- continuous cytoplasm shared by several cells
Symplastic Growth- growth accompanied by the growth of surrounding tissues
Systemic Roots- roots that appear along the developing root system originating in the embryo


T
Tapetum- inner nourishing layer of the pollen sac wall
Terpene- organic molecule of strong aroma
Testa- covering surrounding the embryo of the seed
Tetrahedral- grouped in four or with four sides
Tetralocular- having four sections as in an anther
Tetraploid- having four sets of chromosomes (4n) in contrast to the usual diploid (2n) condition
THC- tetrahydrocannabinol
THCV- tetrahydrocannabiver ol
TLC- thin-layer chromatography
Top Mulching- surface dressing of soil with compost or other organic material to supply nutrients, add root space, and reduce water loss by evaporation
Trace- small area of vascular tissue connecting two like protions of the vascular system such as stem xylem and leaf xylem
Trellising- method of shape and size alteration through physical restriction of growth (i.e.; tying plant down to a wire frame)
Trichome- plant hair
Triploid- having three sets of chromosomes (3n) in contrast to the usual diploid (2n) condition
True-breeding- homozygous for the particular trait or traits


V
Vacuole- space within a cell separate from the cytoplasm


W
Whorled Phyllotaxy- three or more limbs appear per node
Wild- weedy, escaped, naturalized, or indigenous


X
Xylem- vascular tissue of the roots, stems, and leaves through which water and nutrients flow upward from the roots

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