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0: Germination 00: Dry seed 01: Beginning of seed imbibition 03: Seed imbibition complete 05: Radicle emerged from seed 07: Hypocotyl with cotyledons breaking through seed coat 09: Emergence: cotyledons break through soil surface 1: Leaf development (Main shoot) 10: Cotyledons completely unfolded; growing point or true leaf initial visible 11
Many salad green seeds germinate when the temperature is between 50-70°F. Check the seed packet to know the exact range each type of salad green needs. Once the seedlings emerge, pay attention to ...
Plants in hot areas that are provided partial shade during the hottest part of the day will bolt more slowly. Temperatures above 27 °C (81 °F) will generally result in poor or non-existent germination of lettuce seeds. [33] After harvest, lettuce lasts the longest when kept at 0 °C (32 °F) and 96 percent humidity.
The soaking increases the water content in the seeds and brings them out of quiescence. After draining and then rinsing seeds at regular intervals, the seeds then germinate, or sprout. For home sprouting, the seeds are soaked (big seeds) or moistened (small), then left at room temperature (13 to 21 °C or 55 to 70 °F) in a sprouting vessel.
Romaine or cos lettuce (Lactuca sativa L. var. longifolia) is a variety of lettuce that grows in a tall head of sturdy dark green leaves with firm ribs down their centers. Unlike most lettuces, it is tolerant of heat.
It is a measure of germination time course and is usually expressed as a percentage, e.g., an 85% germination rate indicates that about 85 out of 100 seeds will probably germinate under proper conditions over the germination period given. Seed germination rate is determined by the seed genetic composition, morphological features and ...
Seeds of many trees, shrubs and perennials require these conditions before germination will ensue. [citation needed] 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 ...
An exit to the West Front of the U.S. Capitol building is pictured on the day it was announced U.S. President-elect Donald Trump's inauguration is being moved indoors due to dangerously cold ...
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