Ushadi As far as I can understand, a hybrid between two different species at the same ploidy level as parents would be sterile. It may produce flowers but due to problems of pairing (it has one genome each from each parent) no proper gametes would be formed and hence no proper pod formation. The only way it could be a sexual fertile species is immediate duplication of chromosomes after hybridization as in wheat or Tragopogon kashmirianus (I had described in 1976). I have never heard about production of pods in this species of Bauhinia.
-- Dr. Gurcharan Singh Retired Associate Professor SGTB Khalsa College, University of Delhi, Delhi-110007 Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018. Phone: 011-25518297 Mob: 9810359089 http://www.gurcharanfamily.com/ http://people.du.ac.in/~singhg45/ On Sat, Jan 5, 2013 at 6:12 PM, Ushadi <[email protected]> wrote: > > > Gurcharanji: I was wondering, if anybody anywhere hasn't been > studying bauhinia for indepth study, for genetic analysis etc? May be we > can get an input from them?? > > May be this plant is indeed a cutting from B. x Blakeana but has asserted > a slightly different genetic codes or have a local environ based change in > its behavior expression ...like reverting back to one of the parents' > character as in flower size, petal size etc? > > intriguing case study > > usha di > == > > > > > On Friday, December 28, 2012 11:26:05 PM UTC+5:30, Gurcharan Singh wrote: > >> This tree has been bothering us for a long time. Assuming that pod >> belongs to this tree only, we have to completely reject the possibility of >> B. x blakeana.(you will find a lot of reports of pods on the net, but all >> cases of misidentification). Let us see the alternatives keeping this table >> in mind. >> >> >> http://www.amjbot.org/**content/92/3/525/T2.large.jpg<http://www.amjbot.org/content/92/3/525/T2.large.jpg> >> >> B. purpurea has only 3 fertile stamens, petals (more so upper petal) >> are much narrower and quite separated. This should exclude this also. >> >> While comparing this photograph with mine (of B. x blakeana) I was >> curious about the width of upper petal, more in above pplant. While >> checking stamens closely I noticed that of the five stamens (in above >> plant, mine, as well as below link of B. variegata), three of the stamens a >> slightly longer with thicker pinkish filaments, two slightly shorter with >> thinner whitish filaments. Also the width of petals (especially upper >> overlapped petal) leads me to suggest that this tree may a darker coloured >> form of B. variegata only >> >> http://en.wikipedia.org/wiki/**File:Bauhinia_variegata_(** >> Kachnar)_in_Hyderabad,_AP_W_**IMG_1463.jpg<http://en.wikipedia.org/wiki/File:Bauhinia_variegata_(Kachnar)_in_Hyderabad,_AP_W_IMG_1463.jpg> >> >> http://www.efloras.org/object_**page.aspx?object_id=116589&**flora_id=2<http://www.efloras.org/object_page.aspx?object_id=116589&flora_id=2> >> >> http://davesgarden.com/guides/**pf/botd.php?date=2011-06-10#b<http://davesgarden.com/guides/pf/botd.php?date=2011-06-10#b> >> >> But then perhaps flowering period has also to be explored. In Delhi B. x >> blakeana flowers from middle of November to about middle of December, B. >> purpurea flowers in September-October and B. variegata in February-March. >> The pattern in above garden may be kept in mind. >> >> >> >> -- >> Dr. Gurcharan Singh >> Retired Associate Professor >> SGTB Khalsa College, University of Delhi, Delhi-110007 >> Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018. >> Phone: 011-25518297 Mob: 9810359089 >> http://www.gurcharanfamily.**com/ <http://www.gurcharanfamily.com/> >> http://people.du.ac.in/~**singhg45/ <http://people.du.ac.in/~singhg45/> >> >> >> On Fri, Dec 28, 2012 at 7:38 AM, radha veach <[email protected]> wrote: >> >>> Is that pinkish colour of the petioles and the pink tinge of the new >>> leaf normally a feature of B.x blakeana? >>> >>> I have never seen this. >>> >>> regards, >>> Radha >>> >>> >>> On 28 December 2012 20:51, jmgarg1 <[email protected]> wrote: >>> >>>> Some relevant feedback from another thread https://groups.google.com/** >>>> forum/?hl=en&fromgroups#!**topicsearchin/indiantreepix/** >>>> Bauhinia$20AND$20krugii/**indiantreepix/lS9FmkgGfOE<https://groups.google.com/forum/?hl=en&fromgroups#!topicsearchin/indiantreepix/Bauhinia$20AND$20krugii/indiantreepix/lS9FmkgGfOE> >>>> : >>>> >>>> "I too think the tree label is wrong as 3 long and 2 short stamens are >>>> clearly seen.* All features point to B. x blakeana, but I think the >>>> pod shown by Raman ji in another thread needs to be closely checked. The >>>> pod does not look like any of the two parental species or other species of >>>> Bauhinia. It may well belong to another tree, or perhaps a climber.* >>>> -- >>>> Dr. Gurcharan Singh" >>>> >>>> >>>> >>>> ---------- Forwarded message ---------- >>>> From: raman <[email protected]> >>>> Date: 30 January 2012 14:55 >>>> Subject: [efloraofindia:105729] Trees of Lalbagh, Bangalore - Bauhinia >>>> x blakeana - Hong Kong Orchid Tree (Please Confirm) >>>> To: [email protected] >>>> >>>> >>>> This tree is the official floral emblem of Hong Kong and it is widely >>>> cultivated in tropical regions. It is thought to be an accidental hybrid >>>> between B. purpurea and B. variegata. It was first discovered on the >>>> seashore in Hong Kong in 1908 and named after Sir Henry Blake, Governor of >>>> Hong Kong from 1898 to 1903. After the handing back of the colony to China, >>>> a special award was created to replace the British Imperial honours. The >>>> award is called the Grand Bauhinia Medal, or GBM for short. A small >>>> evergreen tree to around 7m tall. The bilobed leaves are dark green and >>>> shiny, with raised yellowish-green veins. Compared to other Bauhinias, the >>>> leaves of this one are huge, six to eight inches. The large, orchid-like >>>> flowers are rich magenta purple with paler veins, and the uppermost petal >>>> is darker towards the base. Flowers appear from February to November, with >>>> the peak flowering time in September to October. This bauhinia is sterile >>>> and rarely produces the large flat seed pods seen on other species. >>>> >>>> Raman >>>> >>>> >>>> >>>> -- >>>> With regards, >>>> J.M.Garg >>>> http://en.wikipedia.org/wiki/**User:Jmgarg1<http://en.wikipedia.org/wiki/User:Jmgarg1> >>>> 'Creating awareness of Indian Flora & Fauna' >>>> The whole world uses my Image Resource of more than a *thousand species >>>> * & eight thousand images of Birds, Butterflies, Plants etc. (arranged >>>> alphabetically & place-wise): http://commons.wikimedia.org/** >>>> wiki/Category:J.M.Garg<http://commons.wikimedia.org/wiki/Category:J.M.Garg>. >>>> You >>>> can also use them for free as per Creative Commons license attached >>>> with each image. >>>> For identification, learning, discussion & documentation of Indian >>>> Flora, please visit/ join our Efloraofindia Google e-group: >>>> http://groups.google.co.in/**group/indiantreepix<http://groups.google.co.in/group/indiantreepix>(more >>>> than 2015 members & 1,39,500 messages on 30/11/12) or Efloraofindia >>>> website: >>>> https://sites.google.com/site/**efloraofindia/<https://sites.google.com/site/efloraofindia/> >>>> (with >>>> a species database of more than 7500 species). >>>> Also author of 'A Photoguide to the Birds of Kolkata & Common Birds of >>>> India'. >>>> >>> >>> >> >> >> --
