Author Topic: Possible problem when grafting an evergreen scion onto a deciduous rootstock?  (Read 3990 times)

FlyingFoxFruits

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Just noticed that my two grafted annona salzmannii trees are handling the cold weather differently

One is grafted onto annona glabra , the other is on annona montana

The tree grafted onto glabra is suffering from the cold, all the leaves are drooping, after it was exposed to only 39F

But thr tree grafted onto Montana is unfazed by the temp drop...and they were sitting side by side in the greenhouse.

I'm wondering if this is becasue annona salzmannii is an evergreen species, and the deciduous glabra rootstock is trying to shut down?  Thus interfering with sap flow and tree vigor, during a cold snap?

I was thinking the Montana, which is evergreen, is a better choice as a rootstock, especially if you're exposed to cold weather...maybe it keeps the tree from getting confused? And shutting down?

« Last Edit: January 18, 2016, 05:38:29 PM by FlyingFoxFruits »
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HoangNguyen

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FFF, that is very good experiment.  Glabra is not deciduous in Vietnam.  In US, its leaves drop because of the cold in winter.  I will try to graft soursop (evergreen) on pawpaw (deciduous).  Does anyone try this experiment before?  What is the result?

FlyingFoxFruits

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FFF, that is very good experiment.  Glabra is not deciduous in Vietnam.  In US, its leaves drop because of the cold in winter.  I will try to graft soursop (evergreen) on pawpaw (deciduous).  Does anyone try this experiment before?  What is the result?

thanks Hoang,

but i don't think soursop will graft onto asimina of any species!

maybe try soursop onto glabra
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gunnar429

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FFF, that is very good experiment.  Glabra is not deciduous in Vietnam.  In US, its leaves drop because of the cold in winter.  I will try to graft soursop (evergreen) on pawpaw (deciduous).  Does anyone try this experiment before?  What is the result?

thanks Hoang,

but i don't think soursop will graft onto asimina of any species!

maybe try soursop onto glabra
David garcia has soursop growing up out of his fish pond (grafted on glabra of course) so it can be done.
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BahamaDan

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Anyone know the suitability of a. reticulata (custard apple) as rootstock?

FlyingFoxFruits

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Anyone know the suitability of a. reticulata (custard apple) as rootstock?

I only use it for other reticulatas, but I'm sure it's good for something.

I have atemoya (dream)on reticulata, and it's growing, but not happy
also have A. dioica on reticulata, but now looks like delayed incompatibility after 2yr, now I see a wound opening up at the graft union...doesn't look like an infection or disease, just like rootstock rejecting scion

same thing on illama...I have one grafted onto reticulata, and it's got a wound, looks like rootstock is rejecting scion, after about 1yr of good growth.
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HIfarm

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These might be a good case for getting the graft union below ground level to give the scion a chance to get "on its own roots".  I know that this was discussed here previously on another thread.  You would have to make the graft as low on the rootstock as possible & then gradually keep planting the plant deeper (deeper pots) to get the graft union below the soil level.

John


I have atemoya (dream)on reticulata, and it's growing, but not happy
also have A. dioica on reticulata, but now looks like delayed incompatibility after 2yr, now I see a wound opening up at the graft union...doesn't look like an infection or disease, just like rootstock rejecting scion

same thing on illama...I have one grafted onto reticulata, and it's got a wound, looks like rootstock is rejecting scion, after about 1yr of good growth.

huertasurbanas

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why not a. muricata onto a. montana? someone should had done it!
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Vernmented

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FFF, that is very good experiment.  Glabra is not deciduous in Vietnam.  In US, its leaves drop because of the cold in winter.  I will try to graft soursop (evergreen) on pawpaw (deciduous).  Does anyone try this experiment before?  What is the result?

thanks Hoang,

but i don't think soursop will graft onto asimina of any species!

maybe try soursop onto glabra
David garcia has soursop growing up out of his fish pond (grafted on glabra of course) so it can be done.

Has this soursop fruited? I am hoping to do experiments with flooded pond apple rootstock to see if it effects fruit quality. Did you take any pictures? I have been brainstorming a few things and have read through most info I can find.
-Josh

FlyingFoxFruits

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lol, i just realized Pond apple isn't deciduous...haha...(maybe semi-deciduous in USA?)

i guess i'll have to go back to the drawing board on this one...

maybe it was delayed incompatibility?

I have a friend who's reported that his tree is growing very well, and flowering on pond apple rootstock.


http://lee.ifas.ufl.edu/Hort/GardenPubsAZ/Pond_Apple.pdf

never mind...I guess my suspicions were correct (pond apple is deciduous, or at least, semi-deciduous in FL)....my friends tree didn't get as cold as mine...so that must be why his didn't die
« Last Edit: August 31, 2016, 12:02:25 PM by FlyingFoxFruits »
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