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Post by doug on Mar 31, 2007 15:38:36 GMT -5
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Post by tom on Mar 31, 2007 15:43:03 GMT -5
it could depend on where they were growing (light or shade)
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Post by ah1ok on Apr 2, 2007 14:07:11 GMT -5
I'll add that sometime, when plants grow in sphagnum or other moss wich grow faster than them, they tend to elongate to stay up on the surface^^.
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Post by Rick Hillier on Apr 3, 2007 6:59:01 GMT -5
I've observed a similar effect to this in other drosera that grow in conditions where the surrounding moss' growth exceeds the vertical growth rate of the plant, but it looks more like etoliation as the plant "reaches" for additional light. This also happens for the "non-stemmed" D. intermedia.
I have both of these forms of D. intermedia in my bog growing openly, side by side, and both retain their characteristics, so there must be something genetic going on there.
>>> Rick <<<
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Post by ah1ok on Apr 3, 2007 11:16:42 GMT -5
in that case... => I've heard that in one same species, we could find different types depending on the genotype of the plant and the environnement. It's like the gene they've found that made someone white or black. Evolutively, they both have their advantage depending on wich condition they are growing in. A pretty well know example is the dandelion (taraxacum) that we can find etiolates plants under trees while those growing on <<pelouse?>> (grassland???) wich are growing pretty flat on the surface. If we put both in the same condition (light or shadow), they will keep relatively stables caracters but the one that is not adapted to the enviroment will will be disadvantaged compared to the other one... seeds are produced in both genotype but only the more adapted to the condition will grow to adult stage. maybe that can explain^^ ;D (I'm actually at school and I do't have my english french dictionnary with me...sorry I didn't find the englis word for <<pelouse>> )
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Post by lloyd on Apr 3, 2007 12:37:56 GMT -5
Pelouse = Lawn?
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Post by tom on Apr 3, 2007 13:06:57 GMT -5
indeed, pelouse = lawn
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Post by ah1ok on Apr 3, 2007 16:02:52 GMT -5
did someone understand me or just spoke some kind of charabia? LOL
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Post by mabudon on Apr 3, 2007 16:06:33 GMT -5
I'm sure a few folks followed it, but I was just waiting until you got back to your dictionary I know there are different forms of the species (even among the "local" temperate ones), tho, I just don't understand the science behind them
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Post by ah1ok on Apr 3, 2007 17:04:51 GMT -5
I'm sure a few folks followed it, but I was just waiting until you got back to your dictionary I know there are different forms of the species (even among the "local" temperate ones), tho, I just don't understand the science behind them LOL, ok ok, euh...second try. first, definitions. phenotype : what you can SEE of the organism genotype: what is related to the gene (wich type of gene the organism has...) the genetic variability allow species to have many variants for one same gene. 1-Sometime, one gene directly causes a particular phenotype. 2-Some other time, it's the genes combination that causes a phenotype. 3-And some more other time, genes variation or combinations doesn't causes anything to the phenotype. example, gene that causes the eye to be black, brown, blue, green, grey... In our drosera case, it may be a gene or genes combination that causes the difference between the two <<forms>>. In a bog, plants grow in competition with moss, so those that grow with stem keeps surviving and reproduce itself. On roads side, those growing close to the soil surface will avoid strong wind. But if those two forms grow close to each other, they might be mix pollinated and seeds may grow into flat to soil plants or elevated plants or intermediate between those two forms... when the seed is lucky, it will land where it is perfect for him to grow; if not, well...it may germinate and then die, or survive without groing as nice as it could be^^ ouf, took me so long to write this answer, hope it's clear LOL
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Post by doug on Apr 3, 2007 19:30:24 GMT -5
Thanks to all who have joined in here. And Rick you said it better than I did. Yes I have Rotundifolia, Intermedia, and linearus all coming out of dormancy. Each one has a very distinctive shape as the start of growing, But I have 4 different shapes for three kinds of Drosera. All growing in the same environment side by side. The rotundifolia is relatively bug and strong looking stems. The linearus has a very broad base on the stem with a small leaf, and the intermedia has a delicate stem and leaf. I am going to watch these "intermedia" forms closely and see if I have some hybrids --- see if they make viable seeds.
I have pictures of all this and some of Sifton bog that I will post soon. Doug
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Post by doug on Apr 14, 2007 19:21:05 GMT -5
Here are the pictures. Linearus Intermedia Rotundifolia and what are these Here is some Rotundifolia with one of the unknown ones Rotundifolia eating a thrip. I was wondering if they would catch thrips as their first meal, and now I know. snack time.
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Post by lloyd on Apr 14, 2007 19:29:58 GMT -5
Very nice pictures. Did you use a macro lens?
On a different note, my linearis, rotundifolia and anglica seeds have been "germinating" for a month or two. How long should I keep my hopes up before tossing them?
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Post by doug on Apr 14, 2007 19:54:15 GMT -5
I have a Canon S3 digital. It has a super macro mode :-)
After I took my seed out of cold stratification, it took about two weeks to start germinating.
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Post by vraev on Apr 14, 2007 20:35:39 GMT -5
wow.....real wicked pics! I love that rotundofolia...but I hear its a big pain in the ass ... I mean its like asleep even if u sneeze on it
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