Question to vanda growers with BLUE vandas

[camille1585]

Originally Posted by DelawareJim

Can you provide a link? I need to brush up on the research. Unfortunately my plant phys. is about 30 years old and has become rather dated.

My thing in university was improving heat tolerance in ornamentals such as campanula, lathyrus, papaver, and primula. Really wanted to work with gentians after my wife and I saw them in the Alps.

Cheers.
Jim

Phytochemistry: Structure of the blue cornflower pigment : Abstract : Nature There are links to the full text and PDF

You'll have to PM me your email address if that doesn't work, I'm not sure if it's open access. I can send you the PDF. I could get it via the university internet network.

I did more reading and discovered that you are correct as well. Sorry about that. While these complex molecules I mention above are responsible for blue in some flowers, in others it's due to chromophores and pH, so reflection of light, like you were saying.
This explains both mechanisms: Anthocyanin chromophores and the quest for the blue rose and the link to a paper cited here. Blue flower color development by anthocyanins: from chemical structure to cell physiology - Natural Product Reports (RSC Publishing) This one is especially interesting, it goes over all the existin knowledge on what makes blue!

[ingse]

Orchideya, have you read any books about Vandas ?
In "Vandas and Ascocendas and their combinations with other genera" by David L. Grove you will find a lot of info about the orchids and there is also a chapter about the standard for the flowers.
Martin R. Motes book "Vandas" is also a "must read" to learn everything about them.

Originally Posted by ingse

Orchideya, have you read any books about Vandas ?
In "Vandas and Ascocendas and their combinations with other genera" by David L. Grove you will find a lot of info about the orchids and there is also a chapter about the standard for the flowers.
Martin R. Motes book "Vandas" is also a "must read" to learn everything about them.

Thank you Ingse, I will try to find the books you mention. So far my only source for orchid info was this forum.