Re: Abutilon, Brugmansia, Acnistus


>I'm looking for germination information for Abutilon, Brugmansia, and
>Acnistus australis. I've read recommendations that Abutilon seeds may be
>soaked or have their seed coats nicked. Should both be done, or is it an
>either/or proposition? How do I avoid damaging the embryo if I decide to
>nick the seed coats? How do you know when you've gone deep enough?
>
>

Brugmansia and Acnistis should not really need any pre-treatment, at least
in my experience.  I can't say about Abutilon, though.

In nicking or filing seeds, it's a bit easier if the seed coat is darker,
as the cotelydon will show up as a lighter spot when you've made it through
the seed coat.  Also if the seed is large enough, you should be able to
identify the placenta side, that is, the side of the seed to which it was
attached to the pod (visualize the "pointed" side of a corn kernel, or the
concave side of a lima bean when seen from the side).  This is the side
that the embryo is typically on, so you will want to try filing or nicking
the OPPOSITE side.

Don Martinson
Wauwatosa, Wisconsin (Milwaukee suburb)
USDA Zone 5 (-10 to -20F)
Heat Zone #4




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