Leaf senescence - PowerPoint PPT Presentation

Plant Hormones

Plant Hormones. Plant tropisms. Growth in a particular direction in response to an external stimulus. Response to gravity is called gravitropism To light is phototropism To touch is thigmotropism Responses may be positive or negative. Early experiments. Canary grass coleoptiles.

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Kinetin an artificial cytokinin.

CYTOKININS History of discovery from tissue culture promotion. Kinetin an artificial cytokinin. Natural cytokinins then found in plants - zeatin and isopentenyl adenine , their ribosides and riboside phosphates (ribotides). Synthesis: Site of production -- roots and seeds. Pathway:

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6th European Workshop on Leaf Senescence 14 -18 October 2013 INRA , Versailles, France

6th European Workshop on Leaf Senescence 14 -18 October 2013 INRA , Versailles, France. Invited speakers. Dr Assaf Distelfeld , Israel Pr Gad Galili , Israel Pr Andreas Fischer, USA Pr Jean-Christophe Avice , France Dr Patrice Codogno , France Pr Agnieszka Sirko, Polska

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190 views • 1 slides

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