In albuminous species, a particular type of triploid tissue provides the nutrition needed for this process, though some species use a substance secreted by the nucellus; those are the endosperm and perisperm, respectively.
The SPATULA protein is responsible for repressing this process, which is preceded by a process controlled by ABI3, FUS3, and LEC1 and 2. This process occurs after the activation of GA3 oxidase. In albuminous species, a particular type of triploid tissue provides the nutrition needed for this process, though some species use a substance secreted by the nucellus; those are the endosperm and perisperm, respectively. This process can be either (*) epigeous or hypogeous depending on which component forms the hook. This process, which sees the emergence of the epicotyl and hypocotyl, is inhibited by abscisic acid in unfavorable conditions. This process is triggered by imbibitions and a subsequent release of gibberellins, which is why gibberellin insensitivity is called "foolish seedling disease". For 10 points, name this process, in which a seed bursts open and a seedling comes out.
The SPATULA protein is responsible for repressing this process, which is preceded by a process controlled by ABI3, FUS3, and LEC1 and 2.
Seed Germination