seed coat
The outer protective covering of a seed.
GardenWeb Glossary of Botanical Terms
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Seed Coat- The outer protective covering of a seed.
Species- A fundamental category of classification ranking below a genus.
Stratification- The chilling of seeds to improve germination.
Seed coat (testa)- The outer coat of the seed derived from the integument(s).
Seedling- A tree grown from seed that has not yet reached a height of 0.9 m (3 ft) or exceeded 5.1 cm (2 in) in d.b.h., which would qualify it as a sapling.
Seed coat The covering or protective layer around a seed.
Seed Pods The hardened protective shell that contains the maturing seeds of a plant.
seed coat A hard outer covering that protects a seed from disease and insects. Also prevents water from entering the seed and initiating germination before the proper time.
seed leaf See cotyledon.
The seed coat or outside of a seed protects it during dormancy. Hidden inside that coat is the radicle or beginning of a root, the hypocotyl or beginning of a shoot, either one or two seed leaves or cotyledons (the seed's food supply), ...
The seed coat may be manipulated for faster germination when growing nasturtium, Nick the seed or soak overnight in lukewarm water. Plant immediately into a container or area of the garden which allows plenty of room for growth.
Some seed coatings are so hard to crack, many gardeners can't scarify them without crumbling the whole seed.
Starting Plants from Seed ...
When the seed coat splits (in this case, about two weeks later) and the beginning of the root appears, it's ready for a small container of ordinary potting soil. The root quickly dives in, and the embryo expands to show the stem and first leaves.
Be aware that some seed coats are extremely hard, which means that water and oxygen cannot get through until the coat breaks down. Seeds such as these can be soaked or scratched to aide the process. An example of such a seed is morning glory.
Sometimes seeds (such as lupines, sweet peas and morning glories) have very tough seed coats and should be soaked or nicked before planting. Some seeds will also take their time germinating.
A sharp blade is used to remove part of the hard seed coating. This ensures that most of the seeds germinate and all at the same time. White seed embryos are healthy and any dead brown ones should be discarded.
Scientists believe that the seed coat is the mechanism that allows a seed to be viable for so long.
Gardeners can mimic this process at home by scratching the seed coat, which allows water to permeate the seed and prompts germination.
Method: Scuff individual seeds by dragging them across a sheet of medium-grit sandpaper.
Spinacia comes from the Latin word for spine and refers to the prickly seed coat. The species name, oleracea, refers to a plant that is edible. True spinach has varying leaf shapes and textures. There are two major types of leaf textures.
To improve sprouting, scratch through the hard covering, or seed coat, which helps the seeds soak up water. Rub the large seeds over coarse sandpaper or nick them with a nail file, just until you see flecks of white beneath the dark seed coat.
This can be done by filing a small area on each seed, or cutting a nick into the seed coating with a knife.
Avoid commercial wildflower seed mixes that contain too many different species of wildflowers.
For the very best germination rates, do not soak, but nick the seeds to allow moisture to enter the seed coat.
Seeds with extremely hard seed coats may need to be nicked or immersed in hot (140-180 degrees) water to sprout. Place these types of seeds in a cup and then pour hot water over them.
remove the seed coats from seedlings as they push up towards the light. Being soil-
based such composts are mostly colder, and seed germination is rarely as rapid as
when a soil-less medium is used. On the other hand seedlings produced in a ...
Morning Glory are grown from seeds. The seed coat is thick. Nick Morning Glory seeds, or soak it in warm water for a couple of hours to soften it ,and increase germination rates.
Before planting, scrape the black seed coat with sandpaper and soak in water overnight to allow better germination. The vine can also be started from seeds indoors in peat pots 4-5 weeks before the last frost date.
SCARIFY - Nick or break seed coat slightly with a small file or scissors in order to facilitate the entrance of water into the seed. This will help to start the germination process.
Scarify - To make an incision in a hard seed coat to induce germination.
Scion - A shoot or sucker growing from a mature plant, generally used for grafting purpose.
Nick seed coats of moonflowers and morning glories or soak seeds overnight to hasten germination. Provide sturdy supports; string or twine can help the plants find their way to an overhead destination.
Morning Glory are grown from seeds. To increase the germination rate and speed, nick the thick seed coat or soak it in warm water for a few hours to soften it.
How to Grow Morning Glory Plants: ...
Seed-Plant embryo with associated stored food encased in a protective seed coat.
Seed piece-Portion of a potato tuber containing at least one eye that is planted to produce a new potato plant.
SCARIFY: The physical or chemical treatment given to some seeds in order to weaken the seed coat sufficiently for germination to occur.
You can speed their germination in late spring by soaking overnight in water or lightly scratching each seed coat. Morning glories are seldom sold in planting pots because they don't transplant well.
Medium-lived seeds are viable for two or three years if stored at low humidity and low temperatures. Long-lived seeds have hard seed coats. They are impermeable to water and can remain viable for up to 15 or 20 years.
 See also: Plant, Seed, Water, Soil, Germination
  
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