Re: Purple-Based Foliage
- To: Multiple recipients of list <i*@rt66.com>
- Subject: Re: Purple-Based Foliage
- From: D* L* <g*@rogerswave.ca>
- Date: Fri, 10 Jan 1997 04:48:28 -0700 (MST)
On Wed, 8 Jan 1997, Sharon McAllister wrote:
> I hope I didn't mislead anyone because we are NOT assuming that the advantage is
> cold-hardiness -- just collecting data that will enable us to consider that
> factor, among others. When setting up a statistical test, it is necessary to
> formulate the hypothesis to be tested. You may be able to make an educated
> guess but you don't "know" in advance how it's going to come out. I'm sorry
> if I gave the wrong impression -- I guess I'm too accustomed to discussing
> statistics with statisticians and iris with irisarians!
I think we will find that the PBF are more rot resistant especially
in zones where there is extensive freeze-thawing in spring and
fall. FWIW I versicolor has PBF. I wouldn't be surprised if I
missouriensis and I brevicaulis do too.
>
> In this case, we'll be collecting enough information to test several things. If
> cold hardiness is indeed an important factor, the ratio should be significantly
> different in the different zones. If the 'survival' advantage exists but is
> unrelated to temperature, the significant relationship should be one of duration
> in the garden. If it's actually an evolutionary advantage or something that
> hybridizers are (perhaps unconsciously) selecting for, the significant factor
> should be the age of the cultivar. Etc. And we need lots of observations from
> different places to be able to distinguish the sometimes-subtle differences.
> Sharon McAllister 73372.1745@compuserve.com
--
Diana Louis <dlouis@dynamicro.on.ca> | Snow has finally arrived to
Zone 5 Newmarket, Ontario, Canada | stay, I hope.
