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ABA

Abbreviation for abscisic acid; see there.

A phytohormone (abbreviation ABA, outdated Dormin) discovered in the 1950s, which has a growth-regulating effect in plants in interaction with auxins, cytokinins and gibberellins. This substance cancels the effect of the growth-promoting hormones and causes, among other things, bud dormancy in already lignified perennial plants. In vines, it is involved in leaf fall, shoot...

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