I'm raising two plants each of the locally wild Ipomoea hederacea cordate (heart) leaf and ivy leaf. Interestingly there is a great difference in time to flowering.... the cordate plant immediately set flower buds at the first true leaf internode, while the ivy leaf is waiting...
This morning, one bloomed while still in the 16 oz styrofoam cup it was germinated in.
...obligatory side view!
...this is from yesterday late afternoon..
...and here is the second flower bud on 4/22/2007, also showing a side shoot developing. The pedicel, with a pink base, of the first flower bud is visible lower and to the left side of the main stem. The lowest node visible on the right side of the stem is actually the junction of the cotyledon and shows a side shoot forming there as well.
...edited to correct and add to the the description...
Arlan
This message was edited May 2, 2007 7:18 PM
Nice series showing that the inner type sepals have a visually obvious greater degree of outward curving of the sepals as compared to the outer type...
the outer sepals could be 'mistaken' for Ipomoea nil,but not the inner sepals...
I find it interesting that a pink/red bud turns out blue!
X
As do I X. Ron, explain it to us please.
Jackie
The various color pigments that look pinkish or reddish(to humans) are variously degraded,added to and replaced by pigments (e.g.,anthocyanins and anthocyanidins) that look more blue to humans...chalcones are more yellowish in color...
X - why don't you document the color stages of a bud that looks pinkish and at exactly what point it makes the change to blue...and then of course the pigments will ultimately look more pink or fuchia as the pigments undergo enzymatic and/or ultraviolet breakdown...
The number of pigments and 'pigment like' coloring compounds are staggering in total number...
some coloring compounds mentioned previously
http://davesgarden.com/forums/p.php?pid=2836475
Ipomoea quamoclit blue to red(?)...
http://www.nature.com/nature/journal/v428/n6985/abs/nature02489.html
links to color related and ph values
http://www.uni-regensburg.de/Fakultaeten/nat_Fak_IV/Organische_Chemie/Didaktik/Keusch/p26_anth-e.htm
blue from SEAsia...(?)...
http://www.nibb.ac.jp/annual_report/2001/html/ann401.html
speckled and flaked
http://www.nibb.ac.jp/annual_report/1997/21.html
biochemical pathways
http://www.duke.edu/~mrausher/resint.htm
chalcones and flavonoids
http://www.nature.com/nsmb/journal/v7/n9/full/nsb0900_786.html
TTY,...
Ron
This message was edited May 1, 2007 4:12 AM
It will be a while .. I have nothing close to budding at the moment.
X
Thank you Ron.
My goodness, that bloomed quite fast. How tall is the vine? Great photos.
A.
This plant with heart shaped leaves had it's seed planted in a styrofoam cup and placed outside on 3/11/2007 with no pretreatment. It germinated on 3/16/2007. When it first bloomed, it had a vine about 18 inches long and a flower bud at each true leaf node, starting with the first. This plant also is developing side shoots beside many of the flower buds, including the junction of the cotyledon with the stem. These buds and shoots can be viewed here: http://davesgarden.com/forums/p.php?pid=3443146
As this is the first time I have raised and observed this species, I'm not sure that this is unusual or not.
As I originally stated, the plants of the ivy leaved variety are not developing flowers nearly as quickly under identical conditions.
Arlan
