Re: CULT: germination traits and selection
- Subject: Re: CULT: germination traits and selection
- From: D* G* H*
- Date: Wed, 31 Mar 1999 07:40:09 -0700
- Priority: normal
From: "David G. Holm" <sherlock@amigo.net>
On 30 Mar 99, at 19:26, sidneygardener wrote:
This is a totally unscientific thought, but the iris seed which have
> germinated so far for me are all irises that are blooming right now. Does
> that count for shorter dormancy?
Sidney,
We all know what assume make out of "u" and "me" - but let's make three
assumptions.
1. Bloom period is related to associated with shortened period of rhizome
dormancy. In other words, early blooming cultivars may have a shortened
rhizome dormancy. If this is true it would be more obvious in a warmer
climate where conditions would be more favorable for growth allowing a
shortened dormancy rhizome to start growth earlier.
2. Rebloom ability is associated with a shortened period of rhizome
dormancy. Again a warmer climate would facilitate this.
3. Lack of or shortened seed dormancy is related to lack of or reduced
rhizome dormancy.
If these assumptions are correct we could make a statement that early
blooming and rebloom ability is a result a reduced of shortened rhizome
dormancy and further that this may be related to lack of or shortened seed
dormancy.
Of course, this is all speculation on my part and would necessitate further
observation and research to verify if any of these relationships do exist.
One question - do reblooming cultivars on the average have an earlier initial
bloom season that those that do not rebloom?
Dave Holm
Professor of Horticulture (Potato Breeding)
Colorado State University
sherlock@amigo.net
------------------------------------------------------------------------
We have a new web site!
http://www.onelist.com
Onelist: The leading provider of free email community services
