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Seed dormancy. Seed dormancy is an evolutionary adaptation that prevents seeds from germinating during unsuitable ecological conditions that would typically lead to a low probability of seedling survival. [1] Dormant seeds do not germinate in a specified period of time under a combination of environmental factors that are normally conducive to ...
Seed dispersal is likely to have several benefits for different plant species. Seed survival is often higher away from the parent plant. This higher survival may result from the actions of density-dependent seed and seedling predators and pathogens, which often target the high concentrations of seeds beneath adults. [4]
Modern seed sizes range from 0.0001 mg in orchid seeds to 42 kilograms (92 lb 10 oz) in double coconuts. [7] [2] Larger seeds have larger quantities of metabolic reserves in their embryo and endosperm available for the seedling [8] than smaller seeds, and often aid establishment under low resource availability. [9]
One of these studies [26] also found the density of seeds in the seed bank to affect germination rates. Bet hedging through a seed bank has also been implicated in the persistence of weeds. One study [ 27 ] of twenty weed species showed that the percentage of viable seeds after 5 years increased with soil depth, and germination rates decreased ...
Melaku Worede (Amharic: መላኩ ወረደ; 1936 – 31 July 2023) was an Ethiopian geneticist and agronomist renowned for building one of the finest seed conservation centres in the world, employing science to benefit poor farmers, and saving Africa's seeds from oblivion.
Svalbard Global Seed Vault. The Svalbard Global Seed Vault (Norwegian: Svalbard globale frøhvelv) is a secure backup facility for the world's crop diversity on the Norwegian island of Spitsbergen in the remote Arctic Svalbard archipelago. [5] The Seed Vault provides long-term storage of duplicates of seeds conserved in genebanks around the world.
A seed bank (also seed banks, seeds bank or seed vault) stores seeds to preserve genetic diversity; hence it is a type of gene bank. [1] There are many reasons to store seeds. One is to preserve the genes that plant breeders need to increase yield, disease resistance, drought tolerance , nutritional quality, taste, etc. of crops .
Charles Robert Darwin FRS FRGS FLS FZS JP [5] (/ ˈ d ɑːr w ɪ n / [6] DAR-win; 12 February 1809 – 19 April 1882) was an English naturalist, geologist, and biologist, [7] widely known for his contributions to evolutionary biology.