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Cannaversity .: Glossary

Glossary


Terms in glossary: 321.

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F1 hybrid
heterozygous first filial generation.
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F2
second filial generation, resulting from a cross between two F1 plants.
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Fertilization
The union of genetic material from the pollen (1n) with genetic material from the ovule (1n), restoring the dipliod condition (2n).
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Firing
Yellowing, followed by rapid death of lower leaves, moving up the plant and giving the same appearance as if someone torched the bottom of the plants.
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Fish emulsion
This is a liquid organic fertilizer with a NPK ratio of about 4-1-1 to 7-2-2. It is water soluble and thus immediately available to plants. It is valued for its high nitrogen content.
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Fixed Trait
A homozygous trait.
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FLIR
Acronym for Forward-Looking Infrared Radar, it is a thermal imaging process whereby differences in heat emission are measured and reflected on a videotape. Heat concentration is indicated on a videotape on a spectrum of light to dark, with bright white showing intense heat. Increasingly, law enforcement personnel are using FLIR thermal imaging to detect indoor marijuana growing operations. They can use FLIR via helicopters and hand-held devices.
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Floral Cluster
Group of flowers growing together on one stem.
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Flower
The reproductive unit of a female plant.
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Flower stalk
Structure that supports the flower.
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Fluorescent light
Not as potent as HID lighting, usually used for clones or vertical, auxiliary side lighting.
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Flush
The act of cleansing a plant's roots of nutrients and contaminants by giving the plant large amounts of water.
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Foliar Feeding
The act of giving water and/or nutrients to the plant through the leaves instead of through the roots.
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Force Flowering
Giving a female plant a photoperiod of 12/12 to force the plant into producing buds.
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GA3
gibberellic acid, sometimes used to influence sexual expression in cannabis.
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Gamete
haploid (1n) sex cell of the ovule or pollen, capable of initiating the formation of a new individual by combining with another gamete of the opposite sex.
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Ganja
Indian word for marijuana derived from pistillate floral clusters of Cannabis.
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Garlic
Planted in the same pot/area as your plants will act as a natural systemic insecticide to greenfly and black fly the plants absorb it from the growing garlic it DOES NOT affect the plants scent or taste, can also be used for same reason with other plants.
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Gene
Element of the germ plasm controlling the transmission of a hereditary characteristic.
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Gene Interaction
The control of a trait by two or more genes.
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Gene Linkage
Transfer of gene pairs for separate traits together in associated groups instead of assorting independently.
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Gene Pool
Collection of possible gene combinations.
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Genotype
Combination of genes present on chromosomes in the nucleus of each cell, which through environmental influences determines the outwardly observable phenotype.
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Germ Plasm
Genetic material contained within seeds or pollen.
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Germinate
To begin to sprout or grow from seed
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