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Robusta or Arabica
greencardigan
I have a few coffee trees in my back yard. I have attached a picture of their leaf. Is it Robusta or Arabica??
greencardigan attached the following image:
coffee_leaf.jpg
 
Unta
Arabica has 44 chromosones and Robusta just 22.

http://www.ico.or...anical.asp
B)
sean

Sean Harrington
educate.
 
John Despres
Chromosomes? I don't get it.

I'm not sure what Sean's link provides in the way of an answer; I need help there, but based on the leaf, I have no idea.

John
Respect the bean.
John Despres
Fresh Roast 8, Gene Cafe, JYTT 1k, Quest M3, Mazzer Mini, Technivorm, various size presses and many more brewers.
 
Dan
We have the Ukers book in the download section, see if it doesn't have varietal pictures.
 
Unta
I thougt there was lots of info fromThat link. I don't think from what I had read there is a way to tell based on leaves.
The chromosome comment was a little.joke. I don't think most of us undestand coffee tree genetics
...lighten up John.
sean
Edited by Unta on 01/13/2011 8:19 AM
Sean Harrington
educate.
 
Dan
I took a look at Ukers and it said that the leaves are almost identical except for the thickness, so you'd need to have one of each to compare to yours. The species can be distinguished by the shape of the tree and its berries and seeds.
 
SteveN

Quote

Unta wrote:
I thougt there was lots of info fromThat link. I don't think from what I had read there is a way to tell based on leaves.
The chromosome comment was a little.joke. I don't think most of us undestand coffee tree genetics
...lighten up John.
sean


What? people don't have microscopes at home to do chromosome smears?
Grin
I'm actually surprised that the two don't have more differences given the genetics. Usually chromosome doubling causes morphological changes in plants (they get bigger)... at least that's what I recall.
 
Dan
Actually, doing plant DNA is easy. You can do it in your kitchen.
 
Unta

Quote

Dan wrote:
Actually, doing plant DNA is easy. You can do it in your kitchen.
I would be very interested in learning more dan...any site or reading reccomendations?

Sean
Sean Harrington
educate.
 
SteveN
I could see doing a crude DNA extraction in your kitchen but I'm still at a loss as to how you might determine chromosome count.
 
Dan
Actually, you can do a legit plant genome extraction using one-solution kits and kitchen equipment. Plants are MUCH easier to extract than animals and you get the results faster, too.

Here's the lowdown: http://www.ehow.c...ction.html

This method is very simple and gives professional lab results: http://www.epibio...asp?id=512

Here's a demonstration technique: http://www.ehow.c...ction.html
 
Unta

Quote

Dan wrote:
Actually, you can do a legit plant genome extraction using one-solution kits and kitchen equipment. Plants are MUCH easier to extract than animals and you get the results faster, too.

Here's the lowdown: http://www.ehow.c...ction.html

This methord is very simple and gives professional lab results: http://www.epibio...asp?id=512

Here's a demonstration technique: [url]http://www.ehow.co.uk/

about_5332907_kitchen-methods-dna-extraction.html[/url]

your the man..thanks!
sean
Sean Harrington
educate.
 
John Despres

Quote

Unta wrote:
I thougt there was lots of info fromThat link. I don't think from what I had read there is a way to tell based on leaves.
The chromosome comment was a little.joke. I don't think most of us undestand coffee tree genetics
...lighten up John.
sean


Hmmm. Lighten up? Asking for help to understand a post isn't correct? I apologize for not getting the humor - didn't seem funny to me, so I asked for help...

John
Respect the bean.
John Despres
Fresh Roast 8, Gene Cafe, JYTT 1k, Quest M3, Mazzer Mini, Technivorm, various size presses and many more brewers.
 
greencardigan
OK, i thought the leaves would differentiate between them but i've been doing some more reading. I'll take a photo of a bean when I get a chance.

I read that Arabica is self pollinating whilst robusta is self-sterile. I originally was getting fruit off a single tree and I don't beleive there are any other trees nearby. So maybe it's Arabica.

But, I aslo read the Arabica bean drop to the ground after they are ripe. My tree doesnt seem to do this. So maybe it's Robusta.

Back to square one??? :|
Edited by greencardigan on 01/13/2011 10:03 PM
 
greencardigan
Here's some more pics. Arabica or Robusta?

www.greencardigan.com/misc/coffee_tree/small_coffee_tree.jpg

www.greencardigan.com/misc/coffee_tree/coffee_flower.jpg

www.greencardigan.com/misc/coffee_tree/arabica_or_robusta_cherries.jpg

www.greencardigan.com/misc/coffee_tree/arabica_or_robusta_beans.jpg

www.greencardigan.com/misc/coffee_tree/coffee_tree_branch.jpg

www.greencardigan.com/misc/coffee_tree/coffee_tree_trunk_branches.jpg





 
dja
your own little micro coffee plantation, when you gonna import the pickers,,,,,,Grin
Edited by dja on 01/16/2011 9:34 AM
I pour Iron and roast Coffee BeansThumbsUp
If life seems normal your not going fast enough Mario Andrette
 
dja
big question is to me where did the original beans come from or the coffee bush/bushes, that should tell you something.

Now me I'm always throught that the distinction was in elevation that the beans were grown, but theres more to it than that.

So I guess I'm back to my original question of where did the trees come from? because everything that is grown above a certian altitude is Arabica, right, or wrong.
I pour Iron and roast Coffee BeansThumbsUp
If life seems normal your not going fast enough Mario Andrette
 
John Despres
The flower isn't much help since it looks like it's a young flower. Robusta and Arabica flowers are different, but I can't tell by this younger flower.

However the beans offer more of a clue... Dunno, I can't tell...
http://www.gourme...m/page/15/

http://mylifestyl...s-robusta/

John

Respect the bean.
John Despres
Fresh Roast 8, Gene Cafe, JYTT 1k, Quest M3, Mazzer Mini, Technivorm, various size presses and many more brewers.
 
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