hort.net Seasonal photo, (c) 2006 Christopher P. Lindsey, All Rights Reserved: do not copy
articles | gallery of plants | blog | tech blog | plant profiles | patents | mailing lists | top stories | links | shorturl service | tom clothier's archive0
Gallery of Plants
Tech Blog
Plant Profiles
Mailing Lists
    Search ALL lists
    Search help
    Subscription info
Top Stories
sHORTurl service
Tom Clothier's Archive
 Top Stories
New Trillium species discovered

Disease could hit Britain's trees hard

Ten of the best snowdrop cultivars

Plant protein database helps identify plant gene functions

Dendroclimatologists record history through trees

Potato beetle could be thwarted through gene manipulation

Hawaii expands coffee farm quarantine

Study explains flower petal loss

RSS story archive

Re: seedling of Bold 2009 MTB

  • Subject: Re: seedling of Bold 2009 MTB
  • From: "Margie Valenzuela" <IrisLady@comcast.net>
  • Date: Tue, 1 Sep 2009 21:11:07 -0700


I've tried growing a few of both...............that was probably a good 10 to 15 years ago. What I've been told by other iris lovers is the reason they don't bloom here is because they don't get enough of the chill factor they need (in the winter) in order for them to bloom. We have warm winters here, kind of spring-like actually. Occasionally we may get a night that dips to freezing or even into the mid 20's. 
Now TB's that have the 'Aphylla' gene, will usually dwindle away to 'nothing' in a year to a year and a half here. They can't seem to take the 100 + degree tempts we have which lasts for over a period of 5-6 months out of the year. Unfortunately, quite a few great TB's, even some Dyke Medal winners, just can not survive here if they have that 'Aphylla' gene. Fortunately, besides TB's, we can easily grow BB's, LA's, Arilbreds, and Spurias. :_) 
I've heard the opposite is true too......that quite a few iris introductions developed in warm climate states will not perform well in the colder climates states. The colder climates NEED the iris to have that "Aphylla' gene in order to make it through the cold winter and bloom the following year.
I'm thinking that in order for a TB to grow and perform well in both the hot AND cold locations (states), they may need one 'Aphylla" gene and one 'hot climate surviving' gene in there DNA. That may possibly hold true for MTB's as well.
~ Margie V.
Oro Valley, AZ.
----- Original Message -----
From: Vicki
Sent: Tuesday, September 01, 2009 5:34 PM
Subject: Re: [iris-photos] seedling of Bold 2009 MTB


What kind of MTB's did you try to grow, diploids or tetraploids ? Our
tet MTB's thrive under the very same growing conditions as the TB's.
They have the characteristic of loosing their foliage in very hot or
very cold conditions in mid summer or mid winter. the term 'aphylla'
literally translates as "leafless"! The rhizomes remain firm and as
soon as the weather warms up/ cools down the foliage returns and so do
the bloom stalks. Now most of our iris are several generations away from
the species so some tend to die down early, others do not.

Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index

 © 1995-2017 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement