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Old 03-22-2017, 01:01 PM   #1 (permalink)
 
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Default The Effect of Gibberellic Acid (GA) Sprays on M. 'Truly Tiny'

I have been trying to undwarf M. 'Truly Tiny' by artificial means. Usually mutations are dwarf because they are deficient and/or insensitive to GA. I found that M. 'Truly Tiny' is very insensitive but not completely insensitive to GA. I had an M. Truly Tiny with a 14" trunk and there was no progressive increase in petiole length or leaf size. On 2/7/17 and several times shortly afterwards, I sprayed with 25 ppm GA without any noticeable results. Then on 2/27/17, I sprayed with 500 ppm GA and on 3/4/17, I sprayed with 1000 ppm. By practical standards, 1000 ppm of GA is an enormous amount, too expensive for commercial applications. Anyway, I got results,.Photo taken today:



As you can see, the trunk has extended by about 4". I will keep you apprised of progress.
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Old 03-26-2017, 08:07 PM   #2 (permalink)
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Smile Re: The Effect of Gibberellic Acid (GA) Sprays on M. 'Truly Tiny'

Cool post....how bout those Cannas in the background have you spritzed them yet.....
or have tried your hand at feminizing seeds. That stuff is amazing.
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Old 03-27-2017, 09:16 AM   #3 (permalink)
 
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Default Re: The Effect of Gibberellic Acid (GA) Sprays on M. 'Truly Tiny'

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Originally Posted by cincinnana View Post
Cool post....how bout those Cannas in the background have you spritzed them yet.....
or have tried your hand at feminizing seeds. That stuff is amazing.
No GA on those cannas, 'Bethany' and 'B. Marley' but I tried 25 ppm GA on C. 'Pink Sunburst' while planted outdoors in the summer of 2016. It made the petioles so long that they collapsed under their own weight and there was no increase in leaf area although the leaves were longer. Incidentally, here is a photo of that plot:


C. 'Pink Sunburst' are the ones with pink flowers but you can't see the GA treated ones because they are in the back.
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Old 03-27-2017, 11:12 AM   #4 (permalink)
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Default Re: The Effect of Gibberellic Acid (GA) Sprays on M. 'Truly Tiny'

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Originally Posted by aruzinsky View Post
No GA on those cannas, 'Bethany' and 'B. Marley' but I tried 25 ppm GA on C. 'Pink Sunburst' while planted outdoors in the summer of 2016. It made the petioles so long that they collapsed under their own weight and there was no increase in leaf area although the leaves were longer. Incidentally, here is a photo of that plot:


C. 'Pink Sunburst' are the ones with pink flowers but you can't see the GA treated ones because they are in the back.
That is an amazing colorful garden area..
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Old 03-28-2017, 05:57 PM   #5 (permalink)
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Smile Re: The Effect of Gibberellic Acid (GA) Sprays on M. 'Truly Tiny'

Sooo..... Have you tried to feminize seeds yet?
Locally... some of the fella
apply it on their cherries.

I do have to add ..Truly Tinys in south florida are chest high...so you have a ways to go with the G-juice..
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Old 03-28-2017, 06:47 PM   #6 (permalink)
 
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Default Re: The Effect of Gibberellic Acid (GA) Sprays on M. 'Truly Tiny'

Quote:
Originally Posted by cincinnana View Post
Sooo..... Have you tried to feminize seeds yet?
Locally... some of the fella
apply it on their cherries.

I do have to add ..Truly Tinys in south florida are chest high...so you have a ways to go with the G-juice..
No, I have no need to apply GA to seeds.

When I bought my 'Truly Tiny', it was advertised as having a maximum trunk height of 2 feet. Same for 'Little Prince'. Both grow fast when small but slow down near this height.

Last edited by aruzinsky : 03-28-2017 at 06:50 PM.
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Old 03-28-2017, 06:57 PM   #7 (permalink)
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Default Re: The Effect of Gibberellic Acid (GA) Sprays on M. 'Truly Tiny'

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Originally Posted by aruzinsky View Post
No, I have no need to apply GA to seeds. When I bought my 'Truly Tiny', it was advertised as having a maximum trunk height of 2 feet. Same for 'Little Prince'.
Agreed.....why mess with a dwarf.
.

Pups
by
Hostafarian
,
on Flickr
However for the cherry crop is another story.. Leland Mi


Untitled

by
Hostafarian
, on Flickr
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Old 03-29-2017, 09:26 AM   #8 (permalink)
 
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Default Re: The Effect of Gibberellic Acid (GA) Sprays on M. 'Truly Tiny'

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Originally Posted by cincinnana View Post
Agreed.....why mess with a dwarf.
Firstly, I want to increase the rate of maturation which I mathematically define as (A1 - A2)/T where

A1 = area of newest leaf
A2 = area of leaf previous to newest
T - time between unfurling of newest and second newest leaf

That is of obvious practical value.

Secondly, the knowledge gained may have practical applications in the future in ways that I can't anticipate.
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Old 04-10-2017, 09:12 AM   #9 (permalink)
 
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Default Re: The Effect of Gibberellic Acid (GA) Sprays on M. 'Truly Tiny'

Update, photos taken yesterday:



I drilled out the two suckers, after which another immediately appeared:


Left Little Prince was sprayed multiple times with 10 ppm Thidizuron (TDZ):


Compare with same plant, lower left, on 2/22/17:


Growth seems to have improved slightly with TDZ treatment.
Similar treatment seemed to suppress sucker growth on a larger Little Prince:

But, did not improve growth of mother plant.

So, starting yesterday, I will spray the GA treated Truly Tiny with 10 ppm TDZ, hopefully to suppress sucker growth.
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Old 04-13-2017, 10:19 AM   #10 (permalink)
 
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Default Re: The Effect of Gibberellic Acid (GA) Sprays on M. 'Truly Tiny'

I like your enthusiasm and admire your initiative with this experiment.
The truly tiny is a sport of a dwarf Cavendish so I cheated and just bought
a dwarf Cavendish and instantly increased the rate of maturation and the
value of A1- area of new leaf and A2-Area of new leaf previous to the next.

TADA
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Old 04-13-2017, 11:50 AM   #11 (permalink)
 
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Default Re: The Effect of Gibberellic Acid (GA) Sprays on M. 'Truly Tiny'

Quote:
Originally Posted by wolfebc View Post
I like your enthusiasm and admire your initiative with this experiment.
The truly tiny is a sport of a dwarf Cavendish so I cheated and just bought
a dwarf Cavendish and instantly increased the rate of maturation and the
value of A1- area of new leaf and A2-Area of new leaf previous to the next.

TADA
I like your attention to my comment about the rate of maturation. The difficulty will be sustaining or increasing the rate of maturation of your plant.

Last autumn, the rates of maturation of both my 'Truly Tiny' and 'Little Prince' were negative for several months because of a mite infestation that I discovered too late because my eyesight isn't what it used to be. I eradicated the mites with Avid and bifenthrin but not before a lot of damage was done.

Last edited by aruzinsky : 04-13-2017 at 11:52 AM.
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Old 04-28-2017, 12:43 PM   #12 (permalink)
 
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Default Re: The Effect of Gibberellic Acid (GA) Sprays on M. 'Truly Tiny'

Update:

Three new leaves since last photo show big improvement with TDZ application:


Incidentally, I am starting a new experiment in which this M. 'Little Prince' is exposed to far red light (735nm) from an LED spotlight between 7 pm and 12 am:
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Old 05-22-2017, 09:55 AM   #13 (permalink)
 
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Default Re: The Effect of Gibberellic Acid (GA) Sprays on M. 'Truly Tiny'

I really enjoy your posts and admire your eagerness to learn.
Have you ever done any experiments to try and encourage a
banana plant to variegate?
I have a Dwarf Giant that occasionally puts out a leaf with a streak
of a different color. I would like to try and encourage it to variegate.
Any thoughts or ideas on this would be greatly appreciated.

Also have you done any experiments on dwarfing banana plants? This
would be super beneficial to those of us that live in an area that is too
cold to grow most cultivars year round in the ground.
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Old 05-22-2017, 10:28 AM   #14 (permalink)
 
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Default Re: The Effect of Gibberellic Acid (GA) Sprays on M. 'Truly Tiny'

Quote:
Originally Posted by wolfebc View Post
I really enjoy your posts and admire your eagerness to learn.
Have you ever done any experiments to try and encourage a
banana plant to variegate?
I have a Dwarf Giant that occasionally puts out a leaf with a streak
of a different color. I would like to try and encourage it to variegate.
Any thoughts or ideas on this would be greatly appreciated.

Also have you done any experiments on dwarfing banana plants? This
would be super beneficial to those of us that live in an area that is too
cold to grow most cultivars year round in the ground.
I have done no experiments to encourage variegation. I do know that many, if not most, variegated plants are chimeras. All of the variegated cannas that you see in my photos are chimeras. See https://en.wikipedia.org/wiki/Chimera_(genetics). I am familiar with an unstable chimera, heliconia 'rubricaulis." It tends to lose it's variegation if grown too fast. If your Dwarf Giant is a chimera, maybe, it will produce more variegation with less light and fertilizer to reduce its growth rate.

I have dwarfed banana plants by using chemical plant growth regulators that are GA antagonists. See my post here:

Oh no!! I broke my banana!! Is it over????

also my photo here:

Ornata Bronze
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Old 05-22-2017, 12:12 PM   #15 (permalink)
 
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Default Re: The Effect of Gibberellic Acid (GA) Sprays on M. 'Truly Tiny'

Thanks for the help. I am looking forward to seeing
your future posts.
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