Re: abscission

From: "Jane M. Whitehill" <whitehil at mobot.org> on 1997.12.02 at 14:44:25(1687) Dear Kevin, I'm really glad you raised this question because it's been on my mind since I saw multiple Philodendron giganteum inflorescences in Puerto Rico which on gross observation seemed to form some zone from which the post-anthesis structure breaks off. Notice how careful I am not to say abscission layer cause I just don't know what's going on physiologically. I'd very much like to hear from other people too. Jane Whitehill +More On Mon, 1 Dec 1997, Kevin Martyn wrote: > Hello everyone! > I've done nothing but lurk on this list for the past few months but > lately I've been shooting my mouth off about aroids in my plant anatomy > class. The topic of abscission came up and dicots stole the show. My > monocot questions and comments, particularly about the formidable > protective layer generated by bulbous aroids (e.g.Amorph., Dracunculus, > Sauromat.), earned me an appointment to find out the anatomical > differences, if any, between the abscission zones of dicots and > monocots. Does anyone know if, in aroids, a true separation layer forms? > If so, does it form just before senescence or does it differentiate > early? What kinds of substances are used to block tracheary elements? > Any particular anatomical differences? > > Thanks for any help! > Kevin Martyn > n9730000@cc.wwu.edu > (P.S. This is not earning me credit so don't feel any moral pressure.) >

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