germination

(redirected from germinate)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to germinate: germanite, hurtle

germination,

in a seed, process by which the plant embryo within the seedseed,
fertilized and ripened ovule, consisting of the plant embryo, varying amounts of stored food material, and a protective outer seed coat. Seeds are frequently confused with the fruit enclosing them in flowering plants, especially in grains and nuts.
..... Click the link for more information.
 resumes growth after a period of dormancy and the seedling emerges. The length of dormancy varies; the seed of some plants (e.g., most grasses and many tropical plants) can sprout almost immediately, but many seeds require a resting stage before they are able to germinate. The viability of seeds (their capacity to sprout) ranges from a few weeks (orchids) to up to 1,200 years (sacred lotus) and 2,000 years (date palm). The percentage of viable seed decreases with age. Dormancy serves to enable the seed to survive poor growing conditions; a certain amount of embryonic development may also take place. Dormancy can be prolonged by extremely tough seed coats that exclude the water necessary for germination. Internally, growth is regulated by hormones called auxins. When the temperature is suitable and there is an adequate supply of moisture, oxygen, and light—although some seeds require darkness and others are unaffected by either—the seed absorbs water and swells, rupturing the seed coat. The growing tip (radicle) of the rudimentary root (hypocotyl) emerges first and then the growing tip (plumule) of the rudimentary shoot (epicotyl). Food stored in the endosperm or in the cotyledons provides energy for the early stages of this process, until the seedling is able to manufacture its own food via photosynthesisphotosynthesis
, process in which green plants, algae, and cyanobacteria utilize the energy of sunlight to manufacture carbohydrates from carbon dioxide and water in the presence of chlorophyll. Some of the plants that lack chlorophyll, e.g.
..... Click the link for more information.
.

Germination

 

the ability of a seed to yield normal sprouts after a set period of time in defined sprouting conditions. In the USSR seed germination is defined by state seed inspection in controlled seed analysis following a method prescribed by the All-Union State Standard (GOST 12038-66). The number of normally sprouted seeds is expressed as a percentage of the total number of seeds taken for analysis. In defining the usefulness of seeds for planting, germination is one of the most important qualities. This is of great productive importance. Seeds with high germination rapidly and conceitedly yield shoots, guaranteeing large harvests under proper conditions. High seed standards are required for norms of germination, so that first-class seeds of the basic grain crops except for hard wheat must have a germination not lower than 95 percent, and hard wheat must have one not lower than 90 percent. Seeds that do not meet the standard may not be used for planting. Germination depends to a great extent on the techniques of cultivation, method of harvesting, and storing conditions.

M. K. FIRSOVA

germination

[‚jer·mə′nā·shən]
(botany)
The beginning or the process of development of a spore or seed.
(petrology)
References in periodicals archive ?
SEEDS will shiver and rot if compost is too wet and cold but won't germinate at all in dry soil.
Z varies between zero and one; it is one when the seeds germinate at the same time and zero when at least two seeds can germinate at distinct times (Ranal & Santana 2006).
Morphophysiologically dormant seeds require a dormancy-breaking treatment to germinate as well as conditions suitable for the growth of the embryo.
Subsequent soil preparation such as disking, might bring to the surface seeds planted long ago, allowing them to germinate. Plants such as clovers often produce seeds with variable coatings so they will germinate over time, thus assuring success to the plant.
[check] Did the bean in the refrigerator germinate?
They also wanted to see how the treatments affect the way the seeds germinate. They found that levels of pathogenic E.
Those seeds from early bloomers tend to germinate soon, too, sprouting that summer and then blooming the next year.
Fertile seeds (those that have the capacity to germinate into a plant) are firm and flat.
Nursery sowing equipment can plant it in a bare root nursery that allows the somatic embryo to germinate just like a natural seed.
From his research on wheat seeds, Wuest concluded that water vapor in the soil is actually what makes seeds germinate. With a relative humidity of close to 99 percent in soil, the seeds didn't need to be tightly compacted in the soil to grow.
It was hypothesized that the violet colored beans exposed to the least amount of radiation would germinate the fastest, whereas the red colored beans exposed to the least amount of radiation would take the longest to germinate.