Tropical Fruit Forum - International Tropical Fruit Growers



Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - mikkel

Pages: [1] 2 3 ... 6
1
Cold Hardy Citrus / Re: hybrids with precocious Poncirus
« on: January 19, 2019, 03:12:08 PM »
That is how I understand it. It sounds like a huge candy bag :) .
Just let this vector infect any plant with this genetic modified virus and it will start to flower, FT3 gene will not be incorporated in the DNS but is although active in proteine synthesis. My understanding is it might be an RNS transfer from the virus to the host which lead to proteine synthesis based on FT3. Virus RNS will not change the DNS of the host.
By law any offspring will not be labelled as GMO.

2
Cold Hardy Citrus / Re: A few super-hardy C. ichangensis hybrid seedlings
« on: January 19, 2019, 02:36:30 AM »
I wouldn`t say N1tri is "super hardy". e.g. N1tri is not suited for growing in open ground in northern Germany. US852 and Citrumelo are hardier here.
I don`t know how hardy it can be in numbers. I suppose prolonged cold spells are the bigger problem.
Your seedling might be a zygotic seedling. When grown up it should have petiole wings.

3
Cold Hardy Citrus / Re: hybrids with precocious Poncirus
« on: January 16, 2019, 01:34:34 PM »
"A different approach uses a citrus tristeza virus (CTV) vector (which was partially constructed by others and generously provided to us) containing the FT3 gene for in planta expression. The virus can be delivered to already established plants, and the FT gene sequence is expressed in the citrus plant, but not incorporated into the genome; "

That is too good to be true :) but probably it will stay in the scientific world :(

Breeding with Eremocitrus (and other southeastern Citrusi) s my favorite way for me as amateur. Good to read about these results.

4
Cold Hardy Citrus / Re: hybrids with precocious Poncirus
« on: January 16, 2019, 01:26:58 PM »
 Wow!

5
I don't know if it is good to store the fruit at room temperature.

I test it this winter.

6
Cold Hardy Citrus / Re: Long term cold hardy citrus breeding project
« on: December 01, 2018, 02:53:01 AM »
Ilya, I cannot tell. They seemed to be growing as any other seedling until I lost most of them to Botrytis in winter. But 4 are still alive and growing normally. One of them flowered as one year seedling.

7
Cold Hardy Citrus / Re: Poncirus fruit comparison
« on: December 01, 2018, 02:46:05 AM »
not really off-topic but beside-topic :)

these are Poncirus seedlings all siblings, same age, same treatment.


8
Cold Hardy Citrus / Re: Long term cold hardy citrus breeding project
« on: November 30, 2018, 04:06:09 PM »
N1 is the number of the mother an Ichang Papeda and tri is for Poncirus. Although it is doubted if it is a real Ichang Papeda x Poncirus hybrid.
But I was told so by the breeder Bernhard Voss.

https://web.archive.org/web/20120720073235/http://www.agrumi-voss.de/

9
Cold Hardy Citrus / Re: Poncirus fruit comparison
« on: November 29, 2018, 04:06:34 PM »

this is the bottom sediment of the juice. I applied it directly to my teeth :) no sticky resin.

10
Citrus Buy, Sell, & Trade / Re: Wanted: Citrus reticulata 'Jiouyuezao'
« on: November 28, 2018, 12:02:03 PM »
This chinese seller has some similiar hardy varieties from China. I asked for Jiouyuezao some years ago but back then they don`t had it. Maybe now?

They offer
Citrus reticulata (Tuanianiju)
Citrus reticulata (Bendizao)
Citrus reticulata (Xingjin)
Citrus reticulata (Zaojin)

11
Cold Hardy Citrus / Re: Poncirus fruit comparison
« on: November 27, 2018, 12:55:03 PM »
31 in the Ellerhoop plant and 28 in one of the smaller fruits.

12
Cold Hardy Citrus / Re: Poncirus fruit comparison
« on: November 27, 2018, 10:57:44 AM »
This weekend I found an interesting Poncirus.
I took pictures like Ilya did.
I found this fruit interesting as the plant description in park said it is a lemon substitute... sounded like on ebay :)
There was only 1 fruit on the tree but several rotten on the ground.
There were other plants grown as a hedge with only few tiny fruits Might be seedlings of it.

The fruit is fuzzy like any Poncirus fruit. You can`t see it on the picture.

Inside like any other Poncirus (left fruit is a rotten one, not the one i used for taste test)


Juice of the Ellerhoop tree


Diluteted juice after 1 1/2 days



There is only some pulp in the diluted juice but nothing more.

Juice is free from resin and sour. No bitterness to my taste ( but I can`t be used as scale :) )
When you bite into the pulp there is some resin but not much and it is not very sticky to the teeth. It did not last long.
There is some bitterness in the peel.
I asked friends to taste it they found some bitterness in the pulp. But only a little. None said it is aweful...
Taste is a highly subjective matter I think. It would be good to have more fruits but so far i need to wait for next year.
I will see if it is as good as this  fruit.


The supposed seedlings are similar in taste but there is no juice in it. I found 3 tiny fruits in the hedge all are more or less the same.
Pulp is more greenish than in the "mother". You can`t see it on the picture.

Tonight I will taste the diluted juice.

13
Thanks!

14
Cold Hardy Citrus / Re: Citsuma Prague
« on: November 27, 2018, 10:16:22 AM »
@Sylvain I think that is what he meant ;)
leaves on my plant

15
Cold Hardy Citrus / Re: Citsuma Prague
« on: November 26, 2018, 05:11:28 AM »
mine too.

16
A paper about crossbreeding Eriobotrya

17
 I found a few japonica plants over the last years around here in northern Germany. Cold hardiness seems to be fair enough. Just some weeks ago I found a small tree in a village nearby. The owner told me it is around 8 years old.
In the yard of the town house here in Luneburg there were real trees up to 3-4 m high until 2 years ago when they were cut down.
We are in USDA zone 7.
What is missing is a variety which flowers in late spring. E. elliptica sounds interesting.
I was thinking about an hybrid variety called "coppertone". Might be different? Any experience?

18
Cold Hardy Citrus / Re: Poncirus fruit comparison
« on: November 23, 2018, 02:35:59 PM »
Thanks you Ilya!
very interesting that Swamp Lemon and Poncirus+ look much more alike from the outside compared to standard Poncirus.

19
Cold Hardy Citrus / Re: Long term cold hardy citrus breeding project
« on: November 21, 2018, 11:22:03 AM »
Interesting and daunting at the same time. I am interested in tomato breeding too. By that I know how long it takes with recurrent backcrossing to breed for resistence controlled by a single gene.
Here is a plan for a late blight resistent tomato. If one can compare Citrus with tomatoes Japanese are even still in the beginning of the work. :(  (all Tomato varieties in this plan are already edible)
What I was thinking when I saw the breeding plan why do they use different Citrus varieties for backcrossing? It is just an idea but I would use as less as possible genetic variation on the Citrus side. It could help to find more homozygotic alleles which (just a guess) could give higher chance for Citrus trait expression in the offspring.

20
Cold Hardy Citrus / What happened to Citsumaquat ?
« on: November 20, 2018, 02:48:07 PM »
Are there any news about it? There are only old posts about it nothing new.

Thanks!


21
Cold Hardy Citrus / Re: Ichanquat 6-7-2
« on: November 20, 2018, 01:52:52 AM »
What a nice tree!

22
Citrus Buy, Sell, & Trade / Re: Honey pummelo seeds
« on: November 19, 2018, 02:34:55 PM »
Did you have success?

23
Cold Hardy Citrus / Re: Citreae tribe hardiness
« on: November 07, 2018, 12:00:04 PM »
P.polyandra is not a hybrid. But I can`t find the pdf right now.
I know of a plant at a german Botanic Garden where it is in open ground. It suffers much from the cold. Snow cover helps a lot.
I had several dieback at -6C but the plant recovered. It is not very vigorous.

24
Cold Hardy Citrus / Re: First fruits of Citrumelo 5star x Morton cross
« on: October 30, 2018, 02:04:27 PM »
Good work!

25
Cold Hardy Citrus / Re: Large poncyrus fruit!
« on: October 28, 2018, 11:58:13 AM »
 I found a ruler a quarter dollar is 2,3 cm (0,90 inch).

Pages: [1] 2 3 ... 6
Copyright © Tropical Fruit Forum - International Tropical Fruit Growers