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09-16-2011, 12:29 PM
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Senior Member
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Join Date: Aug 2007
Zone: 11
Location: Sao Paulo - Brazil
Posts: 4,044
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Cattleya skinneri
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Post Thanks / Like - 6 Likes
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09-16-2011, 12:46 PM
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Moderator
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Join Date: May 2005
Zone: 7b
Location: Queens, NY, & Madison County NC, US
Age: 45
Posts: 19,374
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Wow, gorgeous pics and flowers. My favourite is the 'caerulescens'. Just gorgoeus.
__________________
"We must not look at goblin men,
We must not buy their fruits:
Who knows upon what soil they fed
Their hungry thirsty roots?"
Goblin Market
by Christina Georgina Rossetti
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09-16-2011, 12:49 PM
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Join Date: Jul 2008
Zone: 8a
Location: West Midlands, UK
Age: 49
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Gorgeous. Like Tindo I think the 'caerulescens' is my favourite.
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09-16-2011, 02:17 PM
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Member
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Join Date: Sep 2011
Zone: 7b
Location: Raleigh, NC
Posts: 98
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How can you tell just from looking at the plant that it is tetraploid? Wouldn't you need to look at the chromosomes (probably during mitosis) to be sure?
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09-16-2011, 04:34 PM
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Join Date: Sep 2009
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Location: Chicago, Illinois
Age: 40
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I guess 4N's usually have rounder petals with heavier substance, and everything is bigger too.
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09-16-2011, 04:41 PM
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Member
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Join Date: Sep 2011
Zone: 7b
Location: Raleigh, NC
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I guess you'd need pretty tightly controlled environmental conditions to be sure it wasn't just an environmental effect. Or is it that obvious?
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09-16-2011, 04:45 PM
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Senior Member
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Join Date: Sep 2009
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Quote:
Originally Posted by JungleWriter
I guess you'd need pretty tightly controlled environmental conditions to be sure it wasn't just an environmental effect. Or is it that obvious?
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I guess for direct proof, one just need to count the chromosomes in the cell...So, it was just a guess. |
09-16-2011, 04:52 PM
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Member
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Join Date: Sep 2011
Zone: 7b
Location: Raleigh, NC
Posts: 98
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Right. And chromosomes are usually invisible except during cell division, so tetraploidy could only be confirmed in the lab. I was just curious to know if there were established criteria to establish tetraploidy from orchid morphology.
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09-16-2011, 05:29 PM
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Join Date: Sep 2006
Location: France, Atlantic Coast, Royan
Posts: 3,741
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beautiful! & I agree with both Tindo & Rosie. My favourite too is the 'caerulescens'. Always a pleasure to look at your gorgeous flowers & photos.
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09-16-2011, 06:09 PM
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Senior Member
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Join Date: Jan 2008
Location: España
Posts: 496
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WoNDERFUL - my G. skinneri flowers in Jan-February, but of course Yours flower in Sao Paulo. Dayana is really nice, have never seen it before. Lovely plants and gorgeous pics.
Muito obrigado !
Fer
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