WebLa dominance apicale est le contrôle exercé par les portions apicales de la pousse sur la croissance des bourgeons latéraux. Les explications classiques jusque là invoquées … WebAuxin produced by an active primary shoot apex is transported down the main stem and inhibits the growth of the axillary buds below it, contributing to apical …

Is ABA the earliest upstream inhibitor of apical dominance?

WebAs cytokinins override apical dominance, they are antagonists of the auxin IAA. Cytokinins retard senescence and thus counteract the phytohormone ethylene (Section 19.7). The larvae of some butterflies (e.g., Stigmella, which invade beech trees) use this principle for their nutrition. They excrete cytokinin with their saliva and thus prevent ... WebJan 1, 1997 · Although the concept of apical dominance control by the ratio of cytokinin to auxin is not new, recent experimentation with transgenic plants has given this concept … how to take a break from life

Cytokinin/Auxin Control of Apical Dominance in Ipomoea nil

WebAugust 1997] CLINE—C ONCEPTS AND TERMINOLOGY OF APICAL DOMINANCE 1065 Fig. 1. Developmental stages of apical dominance before and after release by decapitation of the shoot apex. Stage II may vary. If it is negligible as with Arabidopsis or greenhouse-grown Coleus (Cline, 1996), then apical dominance is essentially nonexistent and the … Plant physiologists have identified four different stages the plant goes through after the apex is removed (Stages I-IV). The four stages are referred to as 1. lateral bud formation, 2. "imposition of inhibition" (apical dominance), 3. initiation of lateral bud outgrowth following decapitation, and WebBy using α-14C-BAP it was demonstrated that cytokinin accumulates in the tip of an induced stolon, prior to its conversion to a leafy shoot caused by withdrawal of the IAA/GA3 paste. ... The possibility that the role of auxin in apical dominance, at least in part, is to control the distribution and metabolism of cytokinins is discussed. how to take a break on etsy