"Plumule" redirects here. For the animal structure, see Down feather.
Monocot (left) and dicot (right)Seedling of a Scots pineGrass seedlings (150-minute time lapse)
A seedling is a young sporophyte developing out of a plant embryo from a seed. Seedling development starts with germination of the seed. A typical young seedling consists of three main parts: the radicle (embryonic root), the hypocotyl (embryonic shoot), and the cotyledons (seed leaves). The two classes of flowering plants (angiosperms) are distinguished by their numbers of seed leaves: monocotyledons (monocots) have one blade-shaped cotyledon, whereas dicotyledons (dicots) possess two round cotyledons. Gymnosperms are more varied. For example, pine seedlings have up to eight cotyledons. The seedlings of some flowering plants have no cotyledons at all. These are said to be acotyledons.
The plumule is the part of a seed embryo that develops into the shoot bearing the first true leaves of a plant. In most seeds, for example the sunflower, the plumule is a small conical structure without any leaf structure. Growth of the plumule does not occur until the cotyledons have grown above ground. This is epigeal germination. However, in seeds such as the broad bean, a leaf structure is visible on the plumule in the seed. These seeds develop by the plumule growing up through the soil with the cotyledons remaining below the surface. This is known as hypogeal germination.
A seedling is a young sporophyte developing out of a plant embryo from a seed. Seedling development starts with germination of the seed. A typical young...
A chance seedling is a plant that is the product of unintentional breeding. Identifying the parent plants of a chance seedling may be difficult. It may...
romanized: Bakanae-byou, [bakanae bʲoɯ]), from the Japanese for "foolish seedling", is a disease that infects rice plants. It is caused by the fungus Gibberella...
A seedbed or seedling bed is the local soil environment in which seeds are planted. Often it comprises not only the soil but also a specially prepared...
Malus domestica (Bramley's Seedling, commonly known as the Bramley apple, or simply Bramley, Bramleys or Bramley's) is an English cultivar of apple that...
Escallonia is a genus of shrubs and trees in the family Escalloniaceae. They are native to North and South America. Currently valid species in Escallonia...
grows from a seed or spore. The term is applied to the sprouting of a seedling from a seed of an angiosperm or gymnosperm, the growth of a sporeling from...
shade plants, or rock garden plants. Some produce bulk stock, whether seedlings or grafted trees, of particular varieties for purposes such as fruit trees...
The Seedling Stars is a 1957 collection of science fiction short stories by American writer James Blish. It was first published by Gnome Press in 1957...
embryonic leaves are termed dicotyledonous ("dicots"). In the case of dicot seedlings whose cotyledons are photosynthetic, the cotyledons are functionally similar...
nutrition during germination and the early growth of the seedling. Some terrestrial orchid seedlings, in fact, spend the first few years of their lives deriving...
Lithocarpus, in the family Fagaceae). It usually contains a seedling surrounded by two cotyledons (seedling leaves), enclosed in a tough shell known as the pericarp...
of plant development where photomorphogenesis occurs: seed germination, seedling development, and the switch from the vegetative to the flowering stage...
facilitation to seedlings. Broader definitions include providing shade or support to other plants. Some of the advantages a nurse log offers to a seedling are: water...
from physical and biological sources including drought, predation, seedling-seedling competition, optimal dormancy depth, and dispersal. Since the evolution...
season, and seedlings do not reach the minimum height specifications. But, if an extended photoperiod is provided for Sitka spruce, seedlings become unacceptably...
transplanter is a specialized transplanter fitted to transplant rice seedlings onto paddy fields. The two main types of rice transplanter are the riding...
Discovery of seedling establishment showed seedling preference is near existing plants of conspecific or heterospecific species and seedling amount is abundant...
become accredited and marked food products with the Society's trademarked seedling symbol. This accreditation includes the use of free-range eggs, which other...
originate as seedlings, which either arise by chance or are bred by deliberately crossing cultivars with promising characteristics. The words "seedling", "pippin"...
death of at least some seedlings in any given population. Groups of seedlings may die in roughly circular patches, the seedlings sometimes having stem...
Steremnius carinatus, the conifer seedling weevil, is a species of true weevil in the beetle family Curculionidae. "Steremnius carinatus Report". Integrated...
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