Thanks a lot Gurcharan ji, for the effort and info. Yes i think it is an intrinsic genetic factor that determines seed setting in the species. (a natural population control, in plants?!!!). I also think since the pod is with single seed, the basal part of the pod acts as a wing to carry the seed away from mother plant to avoid overcrowding of seedlings around the mother tree. Needs study!
On Fri, Feb 26, 2010 at 6:31 AM, Gurcharan Singh <[email protected]> wrote: > Vijaysankar ji > Perhaps this paper should be useful in your inquest: > > http://aob.oxfordjournals.org/cgi/content/full/92/5/715 > > Here is the portion that I found relevant: > > "Several factors may be responsible for the low fruit set *in* *B. > monosperma* under open-poll*in*ation. Obviously, limitation*of* compatible > pollen is one factor. However, even *in* manual cross-poll*in*ations, > fruit set was only *in*creased to 23ยท32 %,*in*dicat*in*g that there are > additional constra*in*ts for fruit set which have not been *in*vestigated. > Although there are four or five *ovules* *in* each ovary *of* *B. > monosperma*, only one ovule, usually the one located closest to the style, > develops *in*to the seed. *In* *Dalbergia sissoo* (Mohan Raju* et al*., > 1996 <http://aob.oxfordjournals.org/cgi/content/full/92/5/715#MCG193C30>) > and *Syzigium cumini*(Krishnamurthy* et al*., > 1997<http://aob.oxfordjournals.org/cgi/content/full/92/5/715#MCG193C23> > ), *in* which a s*in*gle seed is predom*in*antly formed, abortion *of* other > seeds has been reported to be caused by the production *of* a chemical *of > * *in*dole nature, such as 4-chloro*in*doleacetic acid. This aspect has > not been *in*vestigated *in* *B. monosperma*." > > > -- > 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://people.du.ac.in/~singhg45/ > > > > On Fri, Feb 26, 2010 at 5:32 PM, J.M. Garg <[email protected]> wrote: > >> Forwarding again for any feedback on: >> "does anyone know why out of six ovules in the fruit only one develops as >> seed (monosperma)?" from Vijayasankar ji. >> >> >> ---------- Forwarded message ---------- >> From: Pravin Kawale <[email protected]> >> Date: 28 January 2010 10:50 >> Subject: [efloraofindia:26843] Beauty of Butea >> To: efloraofindia <[email protected]> >> >> >> Hi, >> Today at Sagaergad,Alibag >> Butea monosperma >> Thanks >> >> >> DSC01239.JPG >> DSC01240.JPG >> DSC01250.JPG >> DSC01258.JPG >> >> These pictures were sent with Picasa, from Google. >> Try it out here: http://picasa.google.com/ >> >> -- >> You received this message because you are subscribed to the Google Groups >> "efloraofindia" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]<indiantreepix%[email protected]> >> . >> For more options, visit this group at >> http://groups.google.com/group/indiantreepix?hl=en. >> >> >> >> >> -- >> With regards, >> J.M.Garg ([email protected]) >> http://en.wikipedia.org/wiki/User:Jmgarg1 >> 'Creating awareness of Indian Flora & Fauna' >> Image Resource of more than a thousand species of Birds, Butterflies, >> Plants etc. (arranged alphabetically & place-wise): >> http://commons.wikimedia.org/wiki/Category:J.M.Garg >> For learning about Indian Flora, visit/ join Google e-group- >> Efloraofindia:http://groups.google.co.in/group/indiantreepix >> >> -- >> You received this message because you are subscribed to the Google Groups >> "efloraofindia" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]<indiantreepix%[email protected]> >> . >> For more options, visit this group at >> http://groups.google.com/group/indiantreepix?hl=en. >> > > > > -- With regards R. Vijayasankar FRLHT, Bangalore -- You received this message because you are subscribed to the Google Groups "efloraofindia" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/indiantreepix?hl=en.
