The first essential phase in the life of a plant was the development of the embryo during which all of the essential organs of the vegetative plant were molded. A second crucial phase was germination, the transition from the seedling, which is dependent upon the reserve materials of the parent plant, to the autonomous, photosynthetically active young plant. This transition is safe-guarded by many control mechanisms.
KeywordsGibberellic Acid Dark Period Flower Formation Shoot Meristem Cucumber Seedling
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