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Re: weird konjac

Dear Jan,

thanks for your comments.

I do know the cristata hyacinthus, but did not kow the mechanism behind.

And yes, I do remember the triple inflorescence titanum very well; you can see me infront of it in the gallery....

I am not sure if more than one inflorecsence in Amorphophallus could be contributeted to an (temperature) effect like the one you describe in hyacinthus. In that case leafs seem to be lost and transformed into flower organs.

I the case of the multi-inflorescence in Amorphophallus it might simply be the size of the tuber or in other words that the biomass is large enough to develop more that one inflorescece (bud).

BTW, I will have to inquire what happend to to tuber in Bonn; i t was speculated that it might split into three smaller tubers after the triple inflorescence.

Happy growing,


-----Original Message-----
Date: Sun, 20 Jan 2008 18:12:45 +0100
Subject: Re: [Aroid-l] weird konjac
From: "Jan Agoston" <agoston.janos123@gmail.com>
To: "Discussion of aroids" <aroid-l@gizmoworks.com>

Dear Bernhard,
It is a teratome. Actually this is often happening with bulbs, like the bigger bulbs of hyacinthus may produce 3 or 4 flowering stems from the bulb, but only 1 leaf rozette. While playing with temperature in the warehouse people realized, that on a specific temperature during flowerstalk development they can avoiding the multiple stems. They have only one but big stem (this teratome called "cristata" in latin), a bit flattened, but with much more flowers on a stem. Sometimes the game is finished before all bulbs developed their stalks, and we may see a stem with a forking end. (Properly one stem with 2 ends). It is also common with Hippeastrums, but on the Auction it is not a pre. (It is called "vuursteel" in Dutch).
I think this is what had happened, but it can be a result of virus infection also.
If it do this next year it does not mean that it will go like this forever.
You may remebre the A. titanum with 3 inflorescences from last(?) year? If the initiation of the inflorescences haven't had finished correctly (e.g.: it would got a cold shock, or something extreme) maybe the 3 inflorescences wouldn't developed separately, but together, and we would have seen similar symptoms.
I hope others have also opinions in this regard.
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