WebFeb 19, 2024 · Cytokinins (CKs) influence various traits of plant growth, development and physiology such as seed germination, apical dominance, flower and fruit development, leaf senescence and plant-pathogen … WebJun 16, 2024 · As an example of successful senescence manipulation through genetic approaches, the senescence-specific enhancement of cytokinin accumulation system …
Silicon promotes cytokinin biosynthesis and delays senescence …
WebCytokinins overcome apical dominance. They promote nutrient mobilization that helps in delay of leaf senescence. Plant Growth Regulators: Type # 4. Ethylene: This is a simple gaseous PGR. It is synthesised in large amounts by tissues undergoing senescence and ripening of fruits. WebThe top three plant growth promoters are: (1) Auxins (2) Gibberellins and (3) Cytokinins. Plant Growth Promoter # 1. Auxins: Auxins are the best known plant growth regulators. They promote growth of stem or coleoptile sections and decapitated (apex removed) coleoptiles, but in the same concentration are incapable of causing growth in intact plants. chtch new
The diverse roles of cytokinins in regulating leaf …
WebFeb 6, 2024 · As describe below, the biosynthesis and signaling of many hormones have been reported to influence petal senescence. Ethylene and abscisic acid (ABA) are generally considered to be senescence-promoting hormones, while cytokinin (CTK) and gibberellins (GAs) are typically thought to delay senescence. WebAbstract. Light and cytokinins are known to be the key players in the regulation of plant senescence. In detached leaves, the retarding effect of light on senescence is well … WebThe reaction of sorghum (Sorghum bicolor) and Arabidopsis plants, modified to absorb high versus low amounts of silicon, to dark-induced senescence was monitored, by quantifying expression levels of genes along the senescence pathway and measuring tissue cytokinin levels. In both species, detached leaves with high silicon content senesced more ... chtc inc