What's germinating this week.

clayton3120 clayton3120 clayton3120@cablespeed.com
Tue, 27 Dec 2011 12:44:25 PST
It is true, Ga3 at a high dose can kill or disfigure an epigeal seedling.
If we are talking 1000 ppm, yes, certainly.   500ppm is a safer dose and
may possibly not affect seedlings at all. I use 300 ppm and have had
wonderful success with no adverse effect.
The proper dose is the key.
Studies and experiments are ongoing, regarding the effects on various genus
and species in universities, commercial institutions , but also by amateurs.
My experiments of Ga3 on Frit seed has been successful, the germination
rate has been high, and aiding germination of some difficult species
without harmful effects.

On Tue, Dec 27, 2011 at 10:48 AM, Jane McGary <janemcgary@earthlink.net>wrote:

> Rick K. wrote
> >I've received seed of several species of Fritillaria, Lilium and others,
> as
> >well as seed of some Asiatic Lily crosses I've made this summer.
> >I do a Ga3 treatment of  300 ppm  on all of the seed, soak for 24 hours,
> >then do a brief rinse and soak in plain water.
> >The seed is then sown in small pans in extremely well drained soil, and
> >given a warm treatment for 3-4 weeks.
> As far as I know, all species of Fritillaria exhibit epigeal
> germination (unlike some Lilium species which are hypogeal). I would
> never treat Fritillaria seed with GA3, because I believe it can
> induce abnormal growth in the cotyledon, leading to eventual failure
> to develop in a healthy way. I have raised more than 90 taxa of
> Fritillaria from seed without special treatment, simply planting them
> in well-drained soilless mix, covering with grit, and leaving them
> outdoors but covered to experience some moist chilling. When they
> germinate, I move them to a frost-free environment. I usually pot on
> the bulbs during their first dormant season, since they're easy to
> spot in the soil.
> One thing that bothers me is the apparent unwillingness of some East
> Asian species to set viable seed in cultivation. Mine don't even when
> hand-pollinated, and the dearth of seed of these species even in the
> specialist list of the AGS Fritillaria Group suggests that others may
> have the same problem. I've raised only one member of this group (F.
> cirrhosa) from seed. It's an alpine type of bulb and does best for me
> in the open garden, on a peaty slope among dwarf ericaceous shrubs.
> Jane McGary
> Portland, Oregon, USA
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