It promotes accumulation of storage proteins in seeds by allowing the expression of their genes, and it is usually found in high concentrations in dormant buds or seeds.
It was discovered by Frederick Addicott in 1963.  Mutant corn plants suffering from vivipary have seeds that germinate while still on the cob due to a lack of this substance. It is synthesized from the carotenoid viola-xanthin, and when guard cells are exposed to it they open calcium channels, which eventually results in the closing of the stoma.  It promotes accumulation of storage proteins in seeds by allowing the expression of their genes, and it is usually found in high concentrations in dormant buds or seeds. The primary inhibitor of stem elongation, FTP name this plant hormone that is commonly referred to as the "stress hormone," which received its name when it was initially thought to help fruit fall from plants.
It was discovered by Frederick Addicott in 1963.  Mutant corn plants suffering from vivipary have seeds that germinate while still on the cob due to a lack of this substance.
abscisic acid [ab-SIS-sic]