iris@hort.net
- Subject: Re: REB: Genetics of rebloom
- From: C* C* <i*@aim.com>
- Date: Mon, 21 Mar 2011 11:58:07 -0400
Yes thanks. Still lots of information to sort out. Extra light will keep plants growing, and more growth means more advanced growth etc. I would expect milder temperature in down town as versus weather station, so perhaps no frosts? I have seen reports previously of extra light conditions keeping iris plants blooming in Dec and Jan in californai What is the coldest? temperature that you get?? How much freeze out death of? late flower stalk? do you get? ---- Original Message ---- From: Michael Sutton <info@suttoniris.com> To: iris@hort.net Sent: Mon, Mar 21, 2011 11:01 am Subject: Re: [iris] Re: REB: Genetics of rebloom just a small note, we are five miles west of porterville in the country and get much colder with many more days of sub freezing weather than in the town itself. The city of Porterville's official flower is the iris and we have supplied them with thousands of rebloomers. the downtown area has bloom year-round and their spring peak bloom is nearly a month ahead of ours. Interestingly the iris in planters under the street lights bloom more profusely year round if they are rebloomers and have an even earlier peak spring bloom. (bout a week earlier) checked to see if it was a heat issue but there is no difference in the ground level temps under the street lights as opposed to the iris not planted near the lights, so it is more than likely a light issue. The first freeze at our gardens is typically mid to late Oct. with the last freeze in late Feburary - early March (but of course we have had frosts through April in the past). We usually experience our first tall bearded rebloom in early June, about six weeks after peak spring bloom. Spring peak has been getting latter for the past decade, up to about the 22 - 25th of April. When we first moved the gardens here in 1988, peak was tax day (April 15th). This year looks like an extremely late bloom year. Don't know if that helps your research but thought it might be useful information.? Mike Sutton? ? ----- Original Message ----- From: "Chuck Chapman" <irischapman@aim.com>? To: <iris@hort.net>? Sent: Monday, March 21, 2011 5:14 AM? Subject: Re: [iris] Re: REB: Genetics of rebloom? ? > In terms of the rebloom trigger, the California Rebloomers (CR) has the? > latest season trigger. Much later then Fall Cyclic. So much work is needed > to?? > bring this into play? earlier in season. So carefull selection is needed? > in? > order to select? the ones with less then 4-5 months of growing season, > after? > bud initiation.? >? > The second selection process is? select those that can carry a flower? > initiation over winter undamaged, so they can have extra early and > extended? > bloom in spring. This works well in Ca and Oz, but may not work as well in? > areas that get colder winters.? >? > The third factor is in having a moderate growing season, so flower buds > can be? > initiated early and often, and plants can continue to grow, not be in > climate? > induced drought and heat dormancy.? >? > I checked weather in Portervile Ca. In 2010? there were only 5 days? of? > freezing weather, (30F)? and? June, July, Aug, Sept and Oct all had? bud > set? > temperatures.? >? > In OZ, Barry Blyth reports 80-90% of all cultivars have rebloom.? >? > When we compared super hardy plants from your climate and my climate, we > found? > the same plants were in both of our super hardy group, were we grew the > same? > plants.? >? > When you have a super growing environment, and plants have adequate water,? > then I suspect? that you can have such fast growth of increases? that they > can? > bypass the reset signal from main fan. When you don't have thes > conditions,? > you don't get this phenomenon.? >? > Combining the differernt rebloom genes in the same plant doesn't? produce > any? > increase in rebloom. Still only one flowering per fan. Earliest trigger is? > what starts the flower initiation.? >? > For? extended season bloom, we need early rebloom trigger and fast growth > and? > multiple increases.? >? > Chuck Chapman? >? >? >? >? >? > ---- Original Message ----? > From: Linda Mann <lmann@lock-net.com>? > To: iris@hort.net? > Sent: Sun, Mar 20, 2011 9:52 pm? > Subject: [iris] Re: REB: Genetics of rebloom? >? > Time will tell.?? > ?? > You are in so much colder climate than here, I can see you wouldn't see > much? > good coming from CA/OZ selections, rebloom or not. CA/OZ are both close > to? > my climate temperature zone, so weakness here is more from intolerance to? > erratic rain, high humidity, and some years, severely erratic winter. > But? > like selections in any climate, there are some with more potential than? > others. Figuring out which ones will work here the big challenge.?? > ?? > & if CA/Oz summer rebloom requires a long growing season, that's a good? > thing here. & if you are right that it is one or more dominant traits,? > that's even better.?? > ?? > But I can see that's not going to work for you.?? > ?? > I hope I can get some plants to cooperate this year to try a few more IMM > X? > (IMM x XYZ) mixes. XYZ being west coast or Oz selections.?? > ?? > Chuck Chapman in Canada said:?? > <I don't see Cal rebloomers adding anything to mix that a good (cold > or?? > otherwise)?? > hardy plant with branching? and bud count PLUS? hardiness couldn't add to?? > mix.?? > Without bringing in the? weakness a number of these California plants > have.? > >?? > ?? > Linda Mann east TN zone 7?? > ?? > ---------------------------------------------------------------------?? > To sign-off this list, send email to majordomo@hort.net with the?? > message text UNSUBSCRIBE IRIS?? > ?? >? > ---------------------------------------------------------------------? > To sign-off this list, send email to majordomo@hort.net with the? > message text UNSUBSCRIBE IRIS? ? ---------------------------------------------------------------------? To sign-off this list, send email to majordomo@hort.net with the? message text UNSUBSCRIBE IRIS? ? --------------------------------------------------------------------- To sign-off this list, send email to majordomo@hort.net with the message text UNSUBSCRIBE IRIS
- Follow-Ups:
- Re: Re: REB: Genetics of rebloom
- From: &* S* &*
- Re: Re: REB: Genetics of rebloom
- References:
- Re: Re: REB: Genetics of rebloom
- From: &* S* &*
- Re: Re: REB: Genetics of rebloom
- Prev by Date: Re: Re: REB: Genetics of rebloom
- Next by Date: Re: Re: REB: Genetics of rebloom
- Previous by thread: Re: Re: REB: Genetics of rebloom
- Next by thread: Re: Re: REB: Genetics of rebloom