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Topics - Marcin

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Citrus General Discussion / Symptom of tristeza virus?
« on: August 24, 2021, 06:46:51 AM »
I've got a lemon plant with such symptoms visible on old leaves. There is some deformation, and when you look against the light, some leaf veins look bright.

Is that vein clearing symptom related to citrus tristeza virus? Or could it be some other problem?

Cold Hardy Citrus / FD seeds
« on: September 24, 2018, 12:09:17 PM »
I have fresh trifoliate orange seeds to share. It is Flying dragon variety.
If you're interested, PM me.

Cold Hardy Citrus / Kumquat x Poncirus
« on: September 16, 2018, 08:41:36 AM »
Hi. I'd like to share my experiences on crossing kumquat with trifoliate orange.

I've heard many times that it's a really difficult cross to make, but I still wanted to try. So last year I've been making some pollinations.

Nagami kumquat x Flying dragon Poncirus
I used two different Nagami cultivars as the mother plants. Pollinated flowers set fruit easily, and seed set proved not bad. The seedlings germinated quickly, but soon some of them refused growing. Still, the rest is growing fine up till now and I hope they will stay like that. ;)

For comparison - standard Poncirus seedling on the left, Nagami x Poncirus on the right:

Reale mandarinquat x Flying dragon Poncirus
In this cross, fruit and seed set were also not bad, but most of the seedlings proved weak and generally aberrant. Some had strange, narrow leaves, and some were even monofoliate. Maybe these abnormalities are connected with the fact that Reale is triploid. Still, I think that with a bit of luck this cross is worth a try.

So to sum up, I think that crossing kumquat with the trifoliate orange is not such a bad idea. There's a good chance of getting a really cold hardy citrus with quite edible fruits.

What do you think? Have you tried making similar crosses? If yes, have you met any obstacles?

Cold Hardy Citrus / Trifoliate seedlings - different root systems
« on: February 24, 2018, 04:47:37 PM »
Hi. I have these trifoliate seedlings; all come from the same source and are of the same age but still differ greatly in vigour. So I guess at least some of them are zygotic.

When repotting them, I noticed that not only their vigour but also their root systems differ.  No. 1 and 2 have nice, dense roots; 3 has a poor and shallow root system; 4 and 5 have very long taproots.

Do you have similar experiences with poncirus root systems differing that much? Also, would a deep taproot increase frost hardiness?

Citrus General Discussion / Red Rangpur
« on: January 09, 2018, 04:39:40 AM »
I just found it on the internet - a red-fruited mutation of Rangpur lime. Called Limão cravo sanguíneo in Brazil, where it apparently comes from. Unfortunately, it seems very rare.
I imagine it makes a great potted plant. Rangpurs are one of the best citrus to grow in pots.

Citrus Buy, Sell, & Trade / Honey pummelo seeds
« on: October 01, 2017, 10:01:06 AM »
I just ate a store bought Chinese Honey pummelo. They're supposed to be seedless, but well this one wasn't. I found over 120 seeds in it. If you're interested, PM me and I'll send you some seeds. They should make nice growing seedlings, possibly hybrids.

I have fresh budwood of these two varieties. If you're interested, PM me.

Citrus General Discussion / New indoor citrus varieties
« on: July 08, 2017, 04:23:49 PM »
Recently I've ran across two new citrus hybrids bred exclusively for indoor cultivation - First Canadian and First Canadian Golden. They are said to thrive in low light conditions and still flower and bear heavy crops of lemon/lime-like seedless fruits.
(Citron 'Odichu Kuthi' x Ponderosa lemon) x Meyer lemon:
(Citron 'Odichu Kuthi' x Ponderosa lemon) x some sort of lime, maybe Key lime:
Patent information:

I think this shows a new niche - breeding citrus for indoor conditions. It's true that some citrus types grow on the windowsill better than others, but still there are no exclusively indoor varieties available. And these could perform indoors even better than a Ponderosa or Meyer.

Citrus General Discussion / Using neem leaves instead of oil
« on: July 08, 2017, 02:08:41 PM »
Neem oil spray kills many citrus pests but it can also damage the plant, especially when used during hot weather. It seems that neem leaves make a good insecticide as well, and such leaf extract spray shouldn't cause any harm to citrus, so it can be used year-round.

Has anyone tried spraying citrus with neem leaf extract instead of neem oil? If yes, did you use fresh leaves or dried? And how did it work?

Citrus General Discussion / Our citrus plants' photos
« on: April 18, 2014, 12:48:18 PM »
There was no such topic where we can show our plants so I've created one. Let me start, these are a few of my citrus plants :)

Thomson navel orange, already outdoors. Not many flowers this year, but there's still some hope for fruits.

Pummelo of unknown variety, I'm waiting for the first fruits to be able to tell more about it. The smaller plant is a Murraya paniculata seedling.

The same Murraya seedling closeup:

This is an Australian fingerlime or a faustrime tree. The smaller ones are: a lemon of Turkish origin (unknown var.), Sanford Curafora F2, and a fragment of Nagami kumquat ;)

And Eustis limequat, this one is still inside. It's going to bloom.

Poncirus trifoliata 'Flying Dragon' flushing, but no flowers yet. It's the only citrus plant that grows inground in my garden. It has already survived 3 winters, one with temps going down to -30 C (-22 F). It's quite a hardy thing, I have to say 8)

A view of the same plant during last summer and autumn:

That's all for today. ;) Hope you'll add some photos of your plants too.

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