what is the role of gibberellins in plants
Gibberellin Gibberellins (GAs) are plant hormones that regulate various developmental processes, including stem elongation, germination, dormancy, flowering, flower development and leaf and fruit senescence.[1] GAs are one of the longest-known classes of plant hormone. It is thought that the (albeit unconscious) selective breeding of crop strains that were deficient in GA synthesis was one of the key drivers of the "green revolution" in the 1960's,[2] a revolution that is credited to have saved over a billion lives worldwide.[3]
Xerophyte The morphology and physiology of xerophytes are variously adapted to conserve water, and commonly also to store large quantities of water, during dry periods. Other species may be able to survive long periods of desiccation of their tissues, during which their metabolic activity may effectively shut down. Plants with such morphological and physiological adaptations are xeromorphic.[1]