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Indoor sowing generally works best with slow-growing seeds that need plenty of time to mature before the harvest season, but it’s also a great option for heat-loving plants that won’t survive ...
Through school gardens, students learn to work the land and create a food garden in which they can grow food such as lettuce, potatoes, kale, and peas. Students learn about local food and what grows in their environment. It helps to create a connection to food and get students thinking about where their food comes from and what it takes to grow it.
In some plants, seeds can be produced without fertilization and the seeds contain only the genetic material of the parent plant. Therefore, propagation via asexual seeds or apomixis is asexual reproduction but not vegetative propagation. [6] Softwood stem cuttings rooting in a controlled environment. Techniques for vegetative propagation include:
"Betsy's Green Thumb": The whole class visits a nursery and begins to grow their own plants. Betsy's plant, however, is the only one that won't grow. Betsy learns all sorts of different ways to help plants grow, and eventually, Betsy's plant blooms into something truly unique after all.
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 which break down these stored food resources into metabolically useful chemicals. [2]
In addition to growth by cell division, a plant may grow through cell elongation. This occurs when individual cells or groups of cells grow longer. Not all plant cells grow to the same length. When cells on one side of a stem grow longer and faster than cells on the other side, the stem bends to the side of the slower growing cells as a result.
Survival in common crop cultivation environments is the predominant method of selection, rather than direct selection by growers and breeders. Individual plants that are favored under prevailing growing conditions, such as environment and inputs, contribute more seed to the next generation than less-adapted individuals. [40]
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 ...