Dear Ron Thanks for this information about Ipomoea stoleri. By the way since it is a hybrid between two species and subsequent duplication of chromosomes, it would be an allotetraploid or amphiploid. This phenomenon is common in genera Tragopogon and Senecio of Asteraceae. In fact I had described one such species Tragopogon kashmirianus G. Singh in 1976, substantiated by molecular studies in recent years.
http://www.2006.botanyconference.org/engine/search/index.php?func=detail&aid=544 -- 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, Mar 17, 2012 at 4:14 PM, Ron_Convolvulaceae <[email protected]>wrote: > Gucharan ji , > > > Yes, this Ipomoea quamoclit was successfully crossed with Ipomoea > coccinea to produce the new species of Ipomoea sloteri > > scroll down the page to see my comment > http://davesgarden.com/guides/pf/go/662/ > > Ipomoea quamoclit has a 2n=30 and Ipomoea coccinea has a 2n=28 and > although the initial filial generations had unstable and varying chromosome > counts , some of the offspring eventually stabilized as an auto-tetraploid > > Ipomoea sloteri (created under laboratory conditions) is one of the > extremely rare true inter-specific hybrids within the Ipomoea genus. > > Hope that is helpful (even if indirectly)... > > regards, > > Ron > . > > > > On Saturday, March 17, 2012 5:10:12 AM UTC-4, Gurcharan Singh wrote: > >> I've shared Convolvulaceae Week: Ipomoea quamaclit from TDL Herbal >> garden Yamuna >> Nagar<https://docs.google.com/document/d/1IzFDztWc4A6giaXVw2_CImE9GTykx7mkipYTvLvVxOY/edit> >> - >> tracked<https://docs.google.com/document/d/1IzFDztWc4A6giaXVw2_CImE9GTykx7mkipYTvLvVxOY/edit> >> Click to open: >> >> - Convolvulaceae Week: Ipomoea quamaclit from TDL Herbal garden >> Yamuna >> Nagar<https://docs.google.com/document/d/1IzFDztWc4A6giaXVw2_CImE9GTykx7mkipYTvLvVxOY/edit> >> - >> tracked<https://docs.google.com/document/d/1IzFDztWc4A6giaXVw2_CImE9GTykx7mkipYTvLvVxOY/edit> >> >> >> Ipomoea quamaclit L. >> >> syn: Quamaclit pennata (Desr.) Bojer >> >> Distinctive species with pinnately cut leaves with linear segments and >> scarlet flowers with long corolla tube. >> >> Commonly cultivated species, Photographed from TDL Herbal garden Yamuna >> Nagar >> >> Ipomoea-quamoclit-TDL Herbal garden Yamuna Nagar-1 >> >> Ipomoea-quamoclit-TDL Herbal garden Yamuna Nagar-2 >> >> Ipomoea-quamoclit-TDL Herbal garden Yamuna Nagar-3 >> >> Gurcharan Singh >> >> >> Google Docs makes it easy to create, store and share online documents, >> spreadsheets and presentations. >> [image: Logo for Google Docs] <https://docs.google.com> - >> tracked<https://docs.google.com> >> >
