8. Likewise, cytokinin's role in regulating vascular tissues, root apical dominance and gravitropism are discussed. Cytokinins promote sprouting of lateral buds and overcome apical dominance. Application of cytokines to lateral buds relieves them from apical inhibition. The data show that the augmentation of cytokinins following mor- phactin application is responsible for lifting the apical dominance and not the effect of ⦠5. 1 answer. Cytokinin and auxin are antagonistic for apical dominance. Seed Dormancy: Delay of senescence (Delayed ageing): Cytokinins as compared to gibberellins are more effective in delaying senescence in aerial parts of plants by controlling protein synthesis and mobilization of resources. Plant Molecular Biology 69:429-435. In plants with strong apical dominance, main shoot tip damage or shoot tip loss, caused by pruning or herbivory, leads to the outgrowth of compact embryonic shoots (axillary buds) into branches. and (3) cytokinin in the process of apical dominance. b) chlorophyll degradation. c) 6-isopentanyl aenine. Auxin-cytokinin interactions in the control of shoot branching. 0 votes. Answered By . Upvote(0) How satisfied are you with the answer? Cytokinin treatment enhances. 7. This will help us ⦠2009. Apical dominance is the control exerted by the shoot apex over lateral bud outgrowth. c) protein degradation. b) zeatin. 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 renewed attention. The concepts and terminology associated with apical dominance as used by various plant scientists sometimes differ, which may lead to signiï¬cant mis-conceptions. What does apical dominance mean ? d) 6-amino purine. Presence of cytokinin in an area causes preferential movement of nutrients towards it. ... counteract apical dominance. So the correct answer is 'Apical dominance'. Reversal of apical dominance: In some plants cytokinins can reverse the effect of apical dominance. Role of Cytokinin and Auxin in Shaping Root Architecture: Regulating Vascular Differentiation, Lateral Root Initiation, Root Apical Dominance and ⦠What is apical dominance? mented with a specific cytokinin synthesis inhibitor (hadacidin) the effect entirely disappeared. Itâs the phenomenon in plants where a main shoot dominates and inhibits the outgrowth of other shoots. a) isopentanyl adenine. 3. asked May 7, 2018 in Class XI Biology by aditya23 (-2,145 points) plantgrowth. toppr. a) chlorophyll synthesis. Counteraction of apical dominance: Auxins and cytokines act opposite to one another in the relation to apical dominance the auxins allow dominance of apical bud while cytokines stimulate the growth of lateral buds. 4. Explain the counter action of cytokinin on apical dominance. The first natural cytokinin isolated from liquid endosperm was. When applied to lateral buds, they help in their growth despite the presence of apical bud. Delay in senescence: 10. They thus act antagonistically to auxin which promotes apical dominance. asked May 7, 2018 in Class XI Biology by priya12 ⦠Cytokinins have been implicated in many developmental processes and environmental responses of plants, including leaf senescence, apical dominance, chloroplast development, anthocyanin production, and the regulation of cell division and sink/source ⦠References Shimizu-Sato S, M Tanaka, and H Mori. Vascular tissues, root apical dominance Shimizu-Sato S, M Tanaka cytokinin apical dominance and H Mori with. 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