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


Thanks to all who posted and responded privetly. 
Laurie, add Canadian Streaker to your list of PBF. as well a variagated foliage it is PBF. This is particulaly delightful as the purple changes colour depending on colour under the PBF. Also a result of a cross of two non PBF varieties (Laced Cotton X Cup Race)

Currently I'm susspecting PBF to be a cummulative gene effect. Usually it takes 3 or 4 Pb genes to show PBF with the most strongly marked being 4 sets eg: Pb Pb Pb Pb. Occasionally Pb(2) will show as faint or inconsistant PB, examples of this are Laced Cotton, Dusky Challenger, Titan's Glory. The Pb(2) that will show it seem to be dark purple varieties. Remember that Laced Cotton is a plicata. The purple seems to be an anthocyanin and very likely one of the anthocyanins that are temperature sensitive. Thus it  shows more ewhen the temperature is cool and likely only slightly related to sun. Allthough the purple will pick up more sun and warm up the plant more & sooner in  the spring.

This is consistant with the information on crosses that I have received and seems to fit the punnett square analysis. Any more numbers on observations of crosses would be welcome.

The one piece of confirmiong information has not yet been received. That is if PBF is Pb(3) and Pb(4) then there should be some crosses of PBF X Green with no PBF offspring. I'm trying to produce some test crosses to show that. While you usually note PBF seeedlings, when all of the cross is green foliage it can be missed that one of the parents is PBF. If anyone has noted this  please let me know.

One of the problems is if PBF is Pb(3) and Pb(4)and PBF is about 10% of the population, then probably (this needs to be calculated and I don't have the formulas that I need) about 75-80% of plants carry at least one Pb gene.

I'm looking to SDB for these tests as the distribution of PBF is much less, 
about 2% vs 10% for TB. 

Keep the information comming.
 Thanks to all that have helped.

Chuck Chapman, Guelph, Ontario, Canada. Zone 4/5

Your favorite stores, helpful shopping tools and great gift ideas. Experience the convenience of buying online with Shop@Netscape! http://shopnow.netscape.com/

Get your own FREE, personal Netscape Mail account today at http://webmail.netscape.com/

------------------------ Yahoo! Groups Sponsor ---------------------~-->
Unlimited PC-PC calling at Crystal Voice! - Only $1/Mo.
Download your free 30 day trial. Click here.


Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ 

 © 1995-2017 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index