Farming in Space: glossary
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Farming in Space: glossary |
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anther
The male flower part, which holds the pollen. Apogee
wheat Triticum aestivum, USU Apogee wheat. A
dwarf variety of wheat that was obtained from a cross between Parula and
Super Dwarf wheat, the same parents as Perigee wheat. AstroPlant Brassica rapa dwf 1/dwf 1. A dwarf variety of Basic Fast Plants bred for experimentation in small chambers in space. average
A mathematical term that represents the middle point of a group of values.
The average is obtained by taking the sum of a group of values and dividing
by the number of values. bar
graph A graphic representation of a set of values shown
as a series of rectangles. The bigger the value, the longer the rectangle. Basic
Fast Plant Brassica rapa Rcbr. A member of the
Brassicaceae family, which includes mustards and cabbages. It was bred
to complete its life cycle quickly, making it ideal for education and
experimentation. cotyledon
The seed leaf of a plant embryo. Monocots have one cotyledon and
dicots have two cotyledons. development
Changes in an organism such as a plant as it grows. developmental
stages A series of changes that a plant undergoes through
its life cycle marked by particular events. A plant’s developmental
stages include germination and flower formation. dicot
In flowering plants, plants that produces two seed leaves. ECE Energy conversion efficiency. A measure of the effectiveness by which a plant produces a desired plant product. ECE = Mass of plant tissue/Hours of light X Wattage of light egg
In plants a specialized cell within an ovule that contains half
of the genetic information needed to produce an offspring. flower
The part of an angiosperm (flowering plant) that is specialized
for reproduction, containing male and/or female structures. germination
The emergence of the plant embryo from the seed. The first root
as well as the embryonic leaf attached to a shoot (the epicotyl) emerges. harvest
To collect plant material at some point during its life cycle. harvest index A measure of how much important material, such as seeds, a plant produces. Harvest index = 100 X Seed mass/Plant mass HPU
Hydroponic production unit. The plastic 2-liter soda bottle containers
used to grow plants in the Farming in Space experiments. hydroponic
Growing plants without soil by providing nutrients in a solution
instead. life
cycle The time period from birth to death of an organism. line
graph A visual representation of a set of values in which
points, each corresponding to a particular value, are connected by a line.
maturity
The developmental stage of a plant in which it produces seeds. monocot
A flowering plant that produces one seed leaf. node
The location on a stem where a true leaf is attached. ovary
A female organ that produces eggs. In plants a swollen structure
in a flower in which ovules develop. ovule
Structures in ovaries that contain eggs and when fertilized by pollen,
develop into seeds. Perigee
wheat Triticum aestivum, USU Perigee wheat.
A dwarf variety of wheat that was obtained from a cross between Parula
and Super Dwarf wheat, the same parents as Apogee wheat. photoperiod
The length of time that light is present in a given time interval,
such as a daily 24-hour time interval. photosynthesis
A process used by plants and some microbes to convert light energy
into chemical energy, which is stored in compounds such as sugar. pistil
The female reproductive structure of a flower, consisting of stigma,
style, and ovary. plant ECE An expression of the amount of plant tissue produced relative to energy expenditure. Plant ECE = Mass of plant tissue/Hours of light X Wattage of light PLH
Plant light house. The assembled box used for growing plants in
the Farming in Space experiment. pollen
In plants the male structure that contains sperm capable of fertilizing
eggs. Pollen is derived from the anther of the flower. seed
A mature ovule, which consists of an embryonic plant plus nutrient material
within a protective coat. seed
ECE An expression of the amount of seed tissue produced
relative to energy expenditure. seed
leaf The embryonic leaf/leaves contained in the seeds
of flowering plants. Monocots have one seed leaf and dicots have two seed
leaves. seed
pod A long, flat structure in a dicot plant that holds
multiple seeds. The seed pod develops from the pistil after fertilization
takes place. stamen
In flowers a male structure that consists of the long, skinny filament
and the pollen-containing anther. stigma
The sticky tip of the female pistil, which collects pollen. style
In flowers a female structure that supports the stigma and transports
pollen to the ovary. true
leaf Leaves
that are produced after seed germination. wheat head The seed-bearing structure of wheat plants. |
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