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1

Dienstag, 14. Mai 2013, 21:52

Mikrovermehrung von Amorphophallus titanum

I must inform you with joy, that succeeded me to multiply an A. titanum from a leaf segment. He has still not roots, but after six weeks, he looks already quite promising.

Greeting
Andreas


2

Dienstag, 14. Mai 2013, 23:42

Hello

Congratulations on the success. What you did there is no real Invitrovermehrung but more or less a leaf cuttings on a breeding ground. Didn't even know that that is.

That seems a good way to be me for leaf cuttings.

Would you tell us about your Setup? May the composition of agar? Would also be interested in your approach.


Have you under sterile conditions with autoclave worked, or rather taken the House technology and then disinfected with bleach and alcohol?

I would want to test sometimes stuff like that. Which hormones have you used? BAP and NAA?

What I wonder is how you want to now put the tuber to the roots. Implement in a hormone-free ground?

Would be glad if you participate with us, on this technique:D

MfG
Stephan

3

Mittwoch, 15. Mai 2013, 10:14

Na clear let I you partake.

The idea came to me when I heard attempt from coal Creek. The report can be found in ACTA horticulturae, issue 226 of 1988, if the want to read someone. To my knowledge, this was the first successful reproduction of A. titanum in nutrient medium via leaf cuttings. I took his attempts but only as a guide and choose another medium.

This was my first attempt, so not everything went off well so perfectly.

A MS served as medium medium with 1.0 BAP and agar.

All Explanate come from my A. sown in October titanum. 15 I have taken from the first sheet, and 7 of the second sheet. For that I used the first two segments and used a segment of the second. The leaves were disinfected in alcohol and then in sodium hypochlorite. Then, I have used only the Middle rib with approx 1 cm sheet on the pages.

The sterilization has worked well. Of the 22 Explanaten, then only two were contaminated. In the Kohlenbach attempt only ca 50 uncontaminated remained of ca 200 Explanaten, so I am quite satisfied with my quota.

However, apparently my glasses were not clean enough, so then again seven Explanate were contaminated. I suspect it was because that I have filled the medium in clean but unsterilized jars and then sterilized by I have heated it in the microwave and cooked for 2 minutes. Apparently, mould spores survived it on the glass.

The difference between the first two was that the contamination on the border between glass and medium occurred here, and not from the Explanat. Next time I'll sterilize so even the individual jars before filling a medium and then again together with the medium.

The Setup, I can say that I a a closed room have worked. First, I have sprayed water with a sprayer in the entire room to bind as much dust. I have washed off the table and all instruments with which I have worked, with alcohol. As "clean box" I've just taken an IKEA SAMLA box that I put on the head and cut a hole to work in the page.

On the subject of rooting, I'm not sure yet. I think just darrüber, if I share my Explanat and put them on to the subcultures, and then these bewurzele. I read me books, just again through the issue of hormones in various Micropropagagation to find out what hormone combination I use sensibly for the subculture. You must grow in step one, step two make a shoot, and in step three to slips.

By the way, it looks that the sheet may be not too old. The Explanate of first leaf, which was about 5 months old at the beginning of the trial, wither all on one. The Explanate of younger leaf look like velversprechender.

Definitely an exciting topic. I'll make soon attempts with my other types. When I'm done, I'll describe the Setup again more detail so that others can do it.

4

Mittwoch, 15. Mai 2013, 11:21

Thank you very much for your explanation. So, as you have described it, I went out also, but with less success.

I would take to the rooting of NAA. The combination of BAP & NAA is quite widespread.

How much agar have you taken since? I was always so tight that it was hard to get pure pieces of sheet:D

And how have you mixed your wash? I assume that you've taken the blue Dan Klorix :) how long did you let the explants in it?

As long as were the explants?

5

Mittwoch, 15. Mai 2013, 11:38

What was because your problem that led to less successful? And where did you buy your hormones and other?

I have taken two scoops of the agar, I mean the American were "pinch" per glass. Theoretically, the 45 ml jars were filled. Since I had no suitable measuring cup but, I have filled that hold roughly the same after eye. For some, the agar was also very hard for the leaves. :D Before I start a new attempt, I'll buy first a suitable scoop me.

The sodium hypochlorite I have a canister with a I believe 13% solution bought, which I then 1 / 10 used diluted. How long they were in there I can not tell grad, since I'm in the Office, and my records are at home. But I think it was about 5 minutes.

In the Explanaten I chose ca 2-3 cm in length, where I have no longer used the blade tip because that was too soft for the agar.

I think you must have done already 3-4 times the whole thing to get a feel for. That is why I will try me now times across through my collection. As in recent weeks, many are driven out, I have enough young leaves to test. If my titanum then drives his third hand, I learned then hopefully enough to get more than a successful Explanat.



Has anyone here possibly else experiences with Micropropagation?


Andreas

6

Mittwoch, 15. Mai 2013, 11:55

My problem was probably because that I have tried a way to multiply which is almost not multiply on cuttings (A.gallaensis). Since, the explants are simply turned brown after a long time.
I have purchased my hormones from ebay.com. There was offered as "water soluble NAA" and "water soluble IBA". I have the BAP and the MS salts of Omikron.

The Bernhard knows quite well that.

7

Sonntag, 23. Juni 2013, 22:49

Hello Amorphophallusfreunde,
Since I grow mushrooms in addition to plant and cultivate the mycelium on agar agar, so a sterilization in microwave not sufficient. The mold spores and many species of bacteria survive. You must sterilize already half an hour or more the agar agar and the culture of glass at 121 ° C. This works very well with a steam pressure saucepan. So that the glass does not shatter, they wrapped it with aluminum foil. As well, the glasses with aluminum foil are closed, where you can screw a lid after sterilization it. In this way, I had only a contamination rate of 2%, which contaminated but at the opening of the jar during the vaccination. To avoid this, I use two (cartridges) Bunsen burner during the vaccination, so that the hot air from swirling dust and microbes upwards. So, hardly anything in the glass flies into it. Amsonsten is the table cutlery, etc. disinfected alcohol and wash. If the jars are cooled down, then it passes they rings around the opening with Vaseline, so no mites in the glass out and thus bring mold spores. You then stick to the Vaseline. Mites hatch even through fine cracks, even if the lenses are been closed with Parafilm.

Because I've grown so far only scrap ship on agar agar, the barley malt and molasses was beigmischt, I have no experience, what you what kinds of additives used in plants multiplication on agar. Since plants need mineral salts, I could imagine a very weak fertilizer solution, because you should not fertilize seedlings generally. What exactly is BAP and NAA? What composition does it have?

8

Montag, 24. Juni 2013, 08:46

First of all your questions, BAP, and NAA are plant hormones or growth regulators. You can reach through the addition of one or more hormones, that such callus and roots are formed by the Explanat. What happens depends on hormones.

BAP - 6-Benzylaminopurine

NAA - 1-Naphthylessigsäure

The MS medium containing salts. It is a fertilizer solution. See here: http://de.wikipedia.org/wiki/Murashige-Skoog-Medium

Experience shows that the microwave sterilization is usually (not always) sufficient. I would mention as Carol Stiff, who practiced in the American region for years tissue culture for domestic use and teaches.

I have a ca-three-month-old Explanat which shows so far no traces of contamination. It is useful here sure that is set to the medium PPM which contamination prevents. See here http://www.plantcelltechnology.com/about-ppm/

If you want to put you closer to deal with the subject, I recommend the following sites:


http://tech.groups.Yahoo.com/group/hometissueculture/
To my knowledge the biggest community, which is engaged in tissue culture.

http://www.kitchenculturekit.com/index.htm
The page of Carol. Here, you can buy the accessories.

http://www.Amazon.de/plants-test-tubes-I...from+test+tubes
The book of plants from test tubes. A comprehensive guide and introduction to the topic.

Greeting
Andreas

9

Mittwoch, 3. Juli 2013, 23:16

Thank you for this answer. I knew the growth hormones only under the name Naphtylessigsäure, which is included also in root fix and the other hormones such as auxins and Gibbelerine.
Now the microwave I've had very bad experiences. That I had begun to times, to sterilize culture media. It was an extreme waste of energy, where electricity costs pretty much in the amount soared and the contamination rate was 90%!
Often, foamed over the thing and me dirty microwave. Then I tried with UV light to steriliseren, where the fertile soil but destroyed the ozone and the Kontiminationsrate was hardly much down. I had tried it also with H2O2 - hardly any noteworthy achievements and broke the mediums such as with ozone. The scrap ship could not grow is often out of the mold.

Only when I put to a steam pressure cooking pot, I had very good success, and he was much more energy efficient than the microwave.
I use intentionally also no chemical agents that keep the substrate sterile.

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