Re: Re: CULT: Growing Iris South Florida
iris@hort.net
  • Subject: Re: Re: CULT: Growing Iris South Florida
  • From: L* M* <1*@rewrite.hort.net>
  • Date: Sun, 09 Nov 2014 06:53:03 -0500
Thanks for the clarification, Chuck.
So in this case, breeding for irises that would not require chilling would make them maladaptive for everywhere else. And if they would grow anywhere else (i.e., with temperatures cool enough for vernalization in winter), they wouldn't be adapted to south Florida.
From what I've read, stone fruit trees (cherries, apples, peaches etc) that 'require' chilling in order to bloom and set fruit will eventually break dormancy in a no-chill climate, so I don't see why irises (especially some of the rebloomers) wouldn't be able to do the same.
The bigger issue seems like it would be disease tolerance in heat + humidity, high rainfall.
I found a few articles online about breeding programs aimed at fruit production in tropical climates - esp Brazil. They now have produced apples that require <100 hrs of chilling, some capable of producing more than one crop/year (i.e., reblooming apples ;-) ) 

Linda Mann
I saw two articles about maples - one was sugar maple, the other European plane tree. 
On 11/8/2014 7:09 AM, Chuck Chapman wrote:

Maladaptive  with changes  from original environment. That is  grow
bloom etc in a way that  causes problems. such as  an iris not blooming.
A good example is with lateral clines of  a maple species ( I think it
was sugar maple or could have been Norway maple). One taken from near
Arctic circle and planted in Virginia that never went dormant   until
after freezing. The one from Virginia  transplanted to near Arctic
circle    didn't start growing until very late in season and went
dormant very early, so hardly grew.  Different environmental
circumstances. what adapted it to one climate was a problem in another.
Same species, different adaptations. What worked in  native habitat was
maladaptive in a different climate.

Chuck Chapman

-----Original Message-----
From: Linda Mann <101l@rewrite.hort.net>
To: iris <iris@hort.net>
Sent: Fri, Nov 7, 2014 9:22 pm
Subject: Re: [iris] Re: CULT: Growing Iris South Florida




Not sure what you mean by this - maladaptive to survival in the changed
environment?  Or maladaptive to survival in the original environment.
Maladaptive in what way.

<Or go through it in  strange  way that is maladaptive, the more the
change to environmental signals, the more maladaptive. >



---------------------------------------------------------------------
To sign-off this list, send email to majordomo@hort.net with the
message text UNSUBSCRIBE IRIS
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index