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:BB Brown Lasso BSE

  • Subject: [iris-photos] Re:BB Brown Lasso BSE
  • From: "Neil A Mogensen" neilm@charter.net
  • Date: Wed, 23 Mar 2005 18:57:42 -0500

"I brought up the site, and can't see anything that even slightly resembles horns."--Jim [Ennenga] in Knoxville
Jim, "BS" and "BSE" are carefully defined terms developed within the Space Age Robin for use in the genetics project about which there is to be an article in the upcoming April *Bulletin.*
Neither BS nor BSE describe horns as such.  They do describe, however, a vertical thickening of the fall's midline from which the beard arises in the case of the "Beard Spine" (BS), and an extension of that structure onward into the fall in the case of "Beard Spine Extension."
It is this latter phenomenon to which Bill Burleson refers.  The Beard Spine often can be seen, and if not seen, can be felt.  There is a definite ridge present.  The Beard Spine Extension, however, can easily be seen, even in photographs, and is present in a number of TB varieties.
An extreme example of a BSE is that structure at the end of the beard on the ancestral variety to Austin's horned irises, ADVANCE GUARD.  On the HIPS site, Advance Guard's photo has an inset accessed by a click of the mouse with a close-up of the structure at the end of the variety's beard.  Mike Lowe's photo shows the triangular structure at the end of the beard, apparently a result of fused tissue from beard hairs, beard spine tissues and perhaps even possibly some tissues normal to the fall surface.  The URL for the site is http://www.worldiris.com/public_html/Frame_pages/QFix.html then follow the alphabetical listing down to Advance Guard.
It has been observed by Sharon McAllister and others that the varieties demonstrating BS and BSE structures are more productive of SA progenies when crossed with them than the ordinary run of bearded irises.  Sharon worked quite intensively with SpaceAge irises at one time, although now her energies are directed toward the aril species and hybrids.
She is not alone in noting the propensity of such irises in the breeding of the SA type.
Bill Burleson's use of the terms "proto-horn or beard spine extension" preceeds the first publication later this month of the latter term, developed for the very reason that "proto-horn," a previously used term to describe this phenomenon, often misleads.  Bill's comment applies, but the older term gives rise to misunderstanding.
Neil Mogensen  z 7   Reg 4, western NC mountains 

Yahoo! Groups Sponsor
click here
Web Bug from http://us.adserver.yahoo.com/l?M=298184.6191685.7192823.3001176/D=groups/S=:HM/A=2593423/rand=981505704

Yahoo! Groups Links

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

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