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rice
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What is viability?
The viability of a seed is the chance that an individual seed will germinate. Viability means its chance of success.
Plants that are thousands of years old have?
Plants that are thousands of years old have adapted to be able to survive the earth's changed conditions. Most of the plants that have been able to survive are trees. Scientist have been successful growing seeds that are thousands of years old to regenerate the plant. The oldest seed to be successful is the 32,000 year old Silene stenophylla.
Were is pollen made?
Gymnosperms are heterosporous, producing microspores that develop into pollen grains and megaspores that are retained in an ovule. After fertilization (joining of the micro- and megaspore), the resulting embryo, along with other cells comprising the ovule, develops into a seed. The seed is a sporophyte resting stage.
What are two characteristics of a seed help an embryo survive harsh conditions?
Inside a seed is a food supply for the developing plant embryo. The outside of a seed is a protective coat. This allows a seed to survive cold weather or a lack of water. A seed can remain dormant for months, or even years, while waiting for the right growing conditions.
What keeps a seed from drying out?
The seeds will not germinate at the time of storage in dry place.
What is viability?
The viability of a seed is the chance that an individual seed will germinate. Viability means its chance of success.
What are the objective of seed viability?
measures the viability of seed using tetrazolium chloride and germination tests.
What are the methods of testing the viability of seed?
ragdoll and seedbox methods
What are the methods of testing the viability of a seed?
Dish method...rag-doll method..Seed-Box Method..
Is a combination of germination percentage germination rate seed viability and strength shown by seedlings?
VIGOR
What happens to a seed if it does not get the things it needs to grow?
Its viability is lost in due course of time and deteriorates.
Why doesnt all seeds grow into a new plant?
Due to dormancy and various levels of seed viability
Does the age of a seed affect the rate of its germination if yes how?
yes. the seed is a living organism, although in an apparent state of suspended animation. while the seed lies dormant it still metabolises - that is it uses it reserves of stored energy (stored in the cotyledons) to stay alive. Some seeds metabolise at a very slow rate and such have a very long "storage life", others may metabolise at a faster rate or have smaller cotyledons - which then shortens their lifespan. Seed viability (rate of germination after storage) is pretty much constant for a particular kind of seed; this can vary from between a few months up to 20 years. The average though is in the region of 4 to 5 years, after this time the germination of the seed batch will have decreased to almost zero. there is an account however of a date palm seed being successfully germinated after almost 2000 years! after it was discovered at an archaeological site in the middle east. viability deteriorates on in a linear fashion per seed batch.
How does the Sturt's Desert Pea survive in the desert?
The small seeds have a long viability, and can germinate after many years. It has a hard seed coat, which protects the seed from harsh arid environments until the next rainfall. Once germinated, seedlings quickly establish a deep taproot, vital for desert survival.
Can seeds wait two thousands years before they begin to grow?
a date palm seed about 2,000 years old was recovered from excavations in Isreal and was successfully germanated in 2005.
Plants that are thousands of years old have?
Plants that are thousands of years old have adapted to be able to survive the earth's changed conditions. Most of the plants that have been able to survive are trees. Scientist have been successful growing seeds that are thousands of years old to regenerate the plant. The oldest seed to be successful is the 32,000 year old Silene stenophylla.
Does ther Latin seed work?
The Latin Seed is Candlenut cultivated and harvested from the Amazon Basin in Brazil. It has been traditionally used as a wellbeing product in South America for thousands of years. The seed is very high in essentual fatty acids and has demonstrated effectiveness in helpign people to lose weight and imrove their health.
