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Thread: D.adelae

  1. #9

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    Cool

    Well, I'm no sundew expert, but many plants are known to have drastic flower color changes in varrying pH's. The most common shifts are blue/white to pink/red. I can see a red flower turning white in higher pH's.
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    Darcie,

    Higer Ph would kill a CP as it would be basic [img]http://www.**********.com/iB_html/non-cgi/emoticons/wink.gif[/img]

    I am currently growing a form of D. adelae know as 'Red Giant' that I recieved from the ABG. This plant has a distinct red colour to it even under light that is not promoting extreme red colouration in other Drosera
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    My adelae is a nice green with red dew driplets. It also produces red flowers. I have noticed when it gets alot of light it will turn more reddish. Also in the reddish stage it seems to grow slower and has shorter leaves. The opposite when it does not get enough light it produces longer narrow leaves and it has a nice green color to it.

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    Darcie's comment coupled with comments made by Tamlin when I visited him and a few observation by myself have got me thinking on the flower colour thing. Tamlin noted to me that plants grown in peat or any media with a slight mineral content tend to show more colour than plants in a totally devoid media. I have noticed this same phenomina in plants that I grow.

    I wonder if it is possible there is some trace mineral that the plants are picking up in cultivation that is not found in their native habitat and this is why we see the colour shift. If would not be the higher pH noted by Darcie but possibly something else, trace Fe, Mg or the like.
    'My love was science- specifically biology and, more specifically, when placed in a common jar, which of two organisms would devour the other.'

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    Smile

    Quote (Pyro @ Mar. 31 2003,11:20)
    Darcie's comment coupled with comments made by Tamlin when I visited him and a few observation by myself have got me thinking on the flower colour thing. Tamlin noted to me that plants grown in peat or any media with a slight mineral content tend to show more colour than plants in a totally devoid media. I have noticed this same phenomina in plants that I grow.

    I wonder if it is possible there is some trace mineral that the plants are picking up in cultivation that is not found in their native habitat and this is why we see the colour shift. If would not be the higher pH noted by Darcie but possibly something else, trace Fe, Mg or the like.[/QUOTE]
    Please remember that higher pH is all relative. You can still have acid conditions at more then one level. Also, it should be noted that Live Sphagnum lowers the pH more then peat alone does. And soil that is in use will start becoming more and more acidic over time. I would guess the red pygment shows up once you hit a certain threshold. But it could also be a mineral thing. Their is an easy test though, if anyone has a suspect color changer take a pice of the plant and dunk in acid or basic solutions and see how the color changes [img]http://www.**********.com/iB_html/non-cgi/emoticons/smile.gif[/img]

    The only CP I know to grow in both extream acid and extream base conditions is the Northern Purple Pitcher. In acid it grows normal, but is Basic soils it turns green and is thinker and brittle.
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    N=R* fs fp ne fl fi fc L Pyro's Avatar
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    Quote (Darcie @ Mar. 31 2003,11:39)
    Please remember that higher pH is all relative. You can still have acid conditions at more then one level. [/QUOTE]
    I am well aware of the trends of pH, I was a chemistry minor and I did tutor 4 different chemistry classes for 4 years [img]http://www.**********.com/iB_html/non-cgi/emoticons/smile.gif[/img]

    The examples you cited where flowers change colour were over an extreme pH range, from true acidic to true basic. And so, in this case I am correct in saying that a similar experiment for a plant as sensitive as D. adelae would result in the plants death

    Quote
    Also, it should be noted that Live Sphagnum lowers the pH more then peat alone does. And soil that is in use will start becoming more and more acidic over time. [/QUOTE]

    Not quite the case. I believe peat and sphag are equal in their acidity. And over time media tends to lose acidity hence the need to repot or water with peat tea.

    Quote
    I would guess the red pygment shows up once you hit a certain threshold. But it could also be a mineral thing. Their is an easy test though, if anyone has a suspect color changer take a pice of the plant and dunk in acid or basic solutions and see how the color changes [img]http://www.**********.com/iB_html/non-cgi/emoticons/smile.gif[/img][/QUOTE]

    Considering the colour change in this hypothesis would be the result of gradual uptake "dunking" it in a basic solution would not show any change (and would probably kill the plant to boot.)

    Quote
    The only CP I know to grow in both extream acid and extream base conditions is the Northern Purple Pitcher. In acid it grows normal, but is Basic soils it turns green and is thinker and brittle.[/QUOTE]

    D. linaris can grow in both (prefers nutral/basic) Cephalotus has been reported to take high slat concentrations. N. mirabilis is a weed and can grow most anywhere, ditto U. subulata and D. capensis. Almost all Mexi-Pings and many (if not all) North-temperate Pings enjoy neutral/basic conditioins.
    'My love was science- specifically biology and, more specifically, when placed in a common jar, which of two organisms would devour the other.'

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    oh thanks for the CP info pyro. Hee hee, I didn't mean dunking the whole plant, lol! I meant a piece of it. I'm sorry for misswording my origenal statement, my bad. As for acid levels in peat and live sphagnum your right in that they start about the same, but the peat will loose it's acidity as you mentioned while the live sphagnum consistantly produces acid. When you first add sphagnum to a system, the pH may be higher then ideal for it, so the sphagnum will work to adjust the pH to proper levels, hence some medium becoming more acidic with time. Basically, Sphagnum manipulates it's own inviornment, thats why it's such a successfull group of plants [img]http://www.**********.com/iB_html/non-cgi/emoticons/smile.gif[/img]
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    I have never tested pH, so I may be blowing smoke, but a lot of Sarracenia people say if you want your red tube form to show more red, to use peat. Now maybe they were comparing peat to LF sphagnum(dried), which would not have as low a pH as living)I presume).
    Interesting banter, though.
    Pyro, is it possible to get another specimen of that clone from ABG, you think?
    I don't grow adelae like I used to, but I started with a plant and they reproduced from plantlets all over and some grew narrow leaves that were purple and some next to them were green, but it was all from one original plant. It was not fussy if it was in LF or peat mixes.

    Regards,

    Joe

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