Genera

Genotype

The genetic makeup of a plant, which is inherited from its parents.
Genus

A taxonomic category that is used to group organisms. A Genus is grouped from similar Species. Similar Genera are in turn grouped into a Family.
Germplasm

A source of genetic material, such as plant tissue, which is used for plant breeding, for example for grass seed cultivar development.
Gibberellins

These are plant hormones (also known as a growth regulators) that regulate a range of plant development processes.
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Glabrous

Hairless; a generally smooth surface.
Glucose

A simple carbohydrate (sugar) product of photosynthesis, having the chemical formula of C6H12O6. This is the most basic of carbohydrates and acts as a building block for more complex carbohydrates, as well as primary (e.g. protein) and secondary metabolites (e.g. plant hormones such as gibberellins).
Glycolysis

The first step in respiration which involves the splitting of a six-carbon glucose molecule in several stages, into two three-carbon molecules of pyruvic acid. This product is then converted to ethanol and CO2 under anaerobic conditions, which can occur in waterlogged or compacted soils, or is converted to acetyl-CoA for use in the citric acid cycle, under aerobic conditions.
There is a net production of two energy ATP compounds resulting from glycolysis, whilst another 36 ATP compounds are converted from a six-carbon molecule as a result of aerobic respiration. With a lot less energy bei
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Gravitropism

The growth of plant features towards (roots) gravity or away (stem and leaves) from gravity.
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Green Manuring

The growing of crops such as clover, rape seed, mustard, vetches or rye, which is then ploughed and cultivated into the soil to add organic matter and enrich it with plant nutrients.