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  #31 (permalink)  
Old 06-08-2009, 08:31 AM
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I am a scientist and engineer (materials, not biological stuff), so the DNA sequencing seems to be a good idea, but as has been mentioned, just how far does one go in - and upon what basis - in splitting genera and species?

Take a look at people - there are a lot of genetic variations out there, yet we're all Homo sapiens. The fact that genetics reveals relationships among the various "catts" is of no surprise at all.

Truthfully, I have not followed the reclassification that closely, as the taxonomists are wont to just change it all again, but wouldn't it be easier if one focused on plant form, pollinia count, and that sort of thing, for separating/combining genera?
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  #32 (permalink)  
Old 06-08-2009, 09:01 AM
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Originally Posted by Ray View Post
.......
Truthfully, I have not followed the reclassification that closely, as the taxonomists are wont to just change it all again, but wouldn't it be easier if one focused on plant form, pollinia count, and that sort of thing, for separating/combining genera?
Agree. Especially because, after all, such things like plant form, pollinia count and form, flower form, colors and so on... are all expressions of the genes inside... A particular species has two leaves because there's one or a set of genes governing this characteristic. In other words, morphology is nothing more than the visual expression of the genes inside the plant and has been the basis for the traditional taxonomy until now... and in my opinion with all the merits. I am not against using the DNA research for a better understanding of the relationships between plants. What seems to be excessive is to forget everything else and throw centuries of serious research in the trashcan.
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Old 06-08-2009, 11:05 AM
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So again, what will you do with your tags? Will you reject/accept these changes all together, or will you pick and choose those with which you agree? Which re-classifications will you accept? Did you accept the last changes? If not, do we take action or protest in some way? Do nothing?
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Old 06-08-2009, 02:00 PM
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So again, what will you do with your tags? Will you reject/accept these changes all together, or will you pick and choose those with which you agree? Which re-classifications will you accept? Did you accept the last changes? If not, do we take action or protest in some way? Do nothing?
It is a hard question to answer, Royal! Anyway, I can say that I am not changing my tags when the plants involved are well-known plants in the whole world, like Laelias, Sophros and Cattleyas, Maxillarias, Oncidiums. It is not wrong and you cannot be punished in a show or judging if you use Cattleya bicolor instead of Cattleya dichroma as they want now. Both are synonyms and perfectly acceptable.
I am not changing my tags because I am sure these names are going to change again and again, based on new DNA studies or new methods or whatever. Less than a decade ago the large flowered Laelias were Laelias, became Sophronitis, then Hadrolaelias, then Brasilaelias and now Cattleyas. It is just a matter of time for them to become Brassavolas for the lumpers or something else for the splitters.
Researchers don't give a dime for us orchid lovers and we don't have how to protest. They don’t hear any of our arguments because in their opinion, once we are not scientists, our opinions are just this, opinions of people who collect plants. They believe they are making the most advanced science and enlarging the human understanding by using these still very questionable DNA studies forgetting that these techniques and methods are still very new and need time to mature. In my humble opinion, the best way in our days would be to combine morphology and DNA analysis to provide a more stable nomenclature. Unfortunately, they elected DNA sequencing as the new god for these problems of elucidating relationship between groups of plants and simply forgot the morphology. They simply discarded this important tool as if it were completely useless. I think that if we say the word 'Morphology' in a conversation with these DNA researchers they will have a heart attack before us!
Well, everything points out to hard times ahead before we can see some light at the end of the tunnel.
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