Dr. Lew Feldman, Garden Director In previous IGYAs, we discussed two major plant signaling molecules: auxin and gibberellin. In this third write-up on plant growth and development controls, we will consider the molecule ETHYLENE, agriculturally and commercially the most important plant signaling molecules. Unlike auxin and gibberellin, which are moved about the plant via internal…

Dr. Lew Feldman, Garden Director In a previous IGYA we began discussing the regulation of growth and development in plants via signaling molecules and focused on the naturally occurring compound known as auxin. In this write-up, we will consider a second group of signaling molecules called the gibberellins (abbreviated GA). As with auxin, in discussing…

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