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Seed germination testing. Seed testing is an analysis of seeds for viability. [citation needed] Seed testing performed for a number of reasons, including research purposes or to determine if seed storage techniques are functioning. Common seed tests include Germination tests, Viability tests, purity tests and weed tests.
White spruce seed can be tested for viability by an indirect method, such as the fluorescein diacetate (FDA) test [42] or ‘Ultra-sound'; [25] or by the direct growth method of ‘germination'. Samples of white spruce seed inspected in 1928 varied in viability from 50% to 100%, but averaged 93%. [43]
Over time, seeds lose viability, which is the ability to initiate metabolic activity, cellular growth, and germination. Seeds have many cells and tissues that die over time, [ 1 ] and these deaths can be delayed or increased by environmental conditions the seed experiences.
Seeds are banked in hermetically sealed glass containers along with silica gel packets impregnated with indicator compounds that change colour if moisture seeps into the collection. Seeds are tested for viability with a germination test shortly after banking and then at regular 10 year intervals.
Apomixis (self-cloning), where seeds are produced asexually and the new plant is genetically identical to its parent; The mode of reproduction of a crop determines its genetic composition, which, in turn, is the deciding factor to develop suitable breeding and selection methods. Knowledge of mode of reproduction is also essential for its ...
The International Seed Testing Association (ISTA) is an independent, non-profit organization founded during the 4th International Seed Testing Congress in 1924. Its members work to promote uniform methods of evaluating seeds being sold internationally to facilitate the international trading of seeds and to contribute to global food security.
Seeds remain in this room form four to six weeks to dry down to around 6% seed moisture before being sealed into foil packets and placed under long-term storage at -20 degrees Celsius. AGG routinely conduct seed viability monitoring tests because seeds lose their ability to germinate, even under long-term conditions. Once seed germination drops ...
Seed vigor is a measure of the quality of seed, and involves the viability of the seed, the germination percentage, germination rate, and the strength of the seedlings produced. [ 47 ] The germination percentage is simply the proportion of seeds that germinate from all seeds subject to the right conditions for growth.