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Seeds of many trees, shrubs and perennials require these conditions before germination will ensue. [3] In the wild, seed dormancy is usually overcome by the seed spending time in the ground through a winter period and having its hard seed coat softened by frost and weathering action. By doing so the seed is undergoing a natural form of "cold ...
It is not exactly known how long dry plant specimens last in storage, but with proper conservation, they have been able to last many centuries. Specimens collected by Linnaeus in the eighteenth century and by Banks and Solander on the Endeavour voyage in 1788 are still excellently preserved. [4] The specimens may be whole plants or plant parts.
The staggering of germination safeguards some seeds and seedlings from suffering damage or death from short periods of bad weather or from transient herbivores; it also allows some seeds to germinate when competition from other plants for light and water might be less intense. Another form of delayed seed germination is seed quiescence, which ...
In these situations, plants adapt by responding accordingly, minimizing water loss and maximizing water uptake. [2] Plants are more susceptible to drought stress during the reproductive stages of growth, flowering and seed development. Therefore, the combination of short-term plus long-term responses allow for plants to produce a few viable ...
Marjoram (/ ˈ m ɑːr dʒ ər ə m /, [2] Origanum majorana) is a cold-sensitive perennial herb or undershrub with sweet pine and citrus flavours. In some Middle Eastern countries, marjoram is synonymous with oregano, and there the names sweet marjoram and knotted marjoram are used to distinguish it from other plants of the genus Origanum.
The uptake of water by seeds is called imbibition, which leads to the swelling and the breaking of the seed coat. When seeds are formed, most plants store a food reserve with the seed, such as starch, proteins, or oils. This food reserve provides nourishment to the growing embryo. When the seed imbibes water, hydrolytic enzymes are activated ...
On our long list of fall-favorite foods, pomegranate is pretty high up there. Not only is this fruit a stunner with its gorgeous deep red hue, but it also packs a punch of flavor and sweetness ...
In some Levantine countries, the condiment za'atar (Arabic for both thyme and marjoram) contains many of the essential oils found in thyme. [8] Thyme is a common component of the bouquet garni, and of herbes de Provence. [9] Thyme is sold both fresh and dried. While summer-seasonal, fresh greenhouse thyme is often available year-round.