Adjacent and Remote Germination

(@knnn)

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Palm seeds will germinate in one of two ways, Adjacent or Remote Germination.

In Adjacent Germination, the seedling axis develops adjacent to the seed.
The Cotyledon will grow out a small ways, forming a “Button”
From this, the seedling stem will form, ( Plumule) and Adventitious roots will develop.
( Adventitious roots are the true roots of a Palm, they form at the root initiation zone located at the bottom of the stem – sometimes this zone does extend higher, as in the case of the stilt root palms )

Occasionally, seedling roots, ( Radicles ), are produced in adjacent germinations, these are generally short lived and soon replaced by Adventitious roots.

With Remote Germination, The seedling axis develops remotely from the seed.
( With Bismarckia nobilis and others, this can be up to a 12” distance )

The first structure to emerge from the seed is the Cotyledonary petiole, this grows down into the soil and forms a “ Bulge”, from here is where the seedling stem, ( Plumule), and seedling root, ( Radicle ), will form. With remote germination, the Radicle will persist for some time, often supplementing Adventitious root growth.

Posted : 22/01/2008 11:29 am

lucky1

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Most interesting, Steve.
Great pics.

Referring to the pic for adjacent germination, my Medjools didn't form a button on the radicle 😕 I'm not sure
if that's now happening in the soil since they were planted?? I'm sure they're not Remote germinators.

I think Jay's going to have to give us a Reference forum 🙂 for really valuable info like this.

"12 inches from the stem"...no wonder you used a 5 gallon pot for your Bizzie seedlings. 😯
Barb

If you drink, don't drive. Don't even putt.

Posted : 22/01/2008 2:34 pm

Knnn

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Hi Barb!

Phoenix's are remote germinators, from the ones I have grown, they will go down about 3" - 4" before they start growing upwards.

I finally figured out how to add text to photos! and just finding way to pass the time till Spring 😆

Steve

Posted : 22/01/2008 2:46 pm

lucky1

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Steve
OK now I've got it...thanks (again) 😳

And I WAS going to mention that text addition...
Presume text is performed in your photo editor?
Thanks!
Barb

If you drink, don't drive. Don't even putt.

Posted : 22/01/2008 2:51 pm

Knnn

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I have been trying out the Gimp ( GNU Image Manipulation Program )

This is freely distributed software for image authoring, photo retouching, etc

http://www.gimp.org/

Taking me a while to learn 😀 but it does have some nice features.

Steve

Posted : 22/01/2008 3:05 pm

lucky1

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I think I goofed with the Medjools then.
Thinking they're "adjacent" and thinking it was a radicle instead of a cotyledonary petiole, I gently placed
the "thingy" straight down into the soil.

Should I have planted more sideways so that the "thingy" goes out sideways before it heads into the soil?
And if so, should I gently rearrange them now?

Damn...I should've paid more attention!
🙁 Barb

If you drink, don't drive. Don't even putt.

Posted : 22/01/2008 4:36 pm

Knnn

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Barb,
You potted them up correctly 8)
It all depends on the seeds orientation when it germinates, some grow straight down, some will grow horizontally a ways and then downward. They will pretty much take care of themselves 😀

Steve

Posted : 22/01/2008 4:58 pm

lucky1

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Thanks a ton! 🙂
Barb

If you drink, don't drive. Don't even putt.

Posted : 22/01/2008 6:03 pm