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
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

Unauthorized use of a plant doesn't invalidate it's patent

RSS story archive

RE: Hybridizing PBF

I have found a cross of a PBF X green cross that produced 16 babies, none with PBF.  
This is Canadian Streaker X Designing Woman. CS is PBF (also varigated foliage, but these are completely independent factors)
Last year I presented mounting evidence that PBF is a partialy dominant rather then a completely dominant gene and that 3 or 4 PBF genes were needed for the PBF to show.  At that time I indicated that the last piece of comfirming evidence that was needed was a cross of a PBF parent to non-PBF   plant that produced no PBF offspring. This is the confirming evidence. The variagation present on thes seedlings certainly confirm CS parentage, and no other crosses with CS took that year. If PBF is dominant then half the offspring should be PBF. 16 plants is a large enough sample in this case to reduce the probability of this result by accident to be less then 1 in 100 cases. I didn't do the statistics, which would be a binomial probability function (like a coin toss) but it would likely give the probabilty of this as even much lower. (same as tossing a coin and getting 16 heads in a row.)

Thus PBF is partially dominant, showing with 3 or 4 PBF genes. Thus there are only two strengths of PBF. Other  variations on intensity would be due  to other factors. Ther is always the possibility that a plant with 2 PBF genes , in a cold spring aarea would show slight traces of PBF to a carefull observer.
Chuck Chapman, Guelph, Ontario, Canada. Zone 4/5

McAfee VirusScan Online from the Netscape Network.
Comprehensive protection for your entire computer. Get your free trial today!

Get AOL Instant Messenger 5.1 free of charge.  Download Now!

To sign-off this list, send email to majordomo@hort.net with the

 © 1995-2015 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index