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Author Topic: Long term cold hardy citrus breeding project  (Read 805 times)

Ilya11

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Re: Long term cold hardy citrus breeding project
« Reply #25 on: December 21, 2017, 10:46:17 AM »
Millet,
The seeds, are they also restricted?
Best regards,
                       Ilya

Millet

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Re: Long term cold hardy citrus breeding project
« Reply #26 on: December 21, 2017, 11:02:46 AM »
Llya11, no I think seeds would be OK.  I have sent seeds of various citrus cultivars to Europe and Asia, and by the time they arrived 60 percent  were dead or damaged.   I assume that poncirus+ is as slow growing as regular poncirus, therefore how many years do you think it would take from germination to fruiting.?

mikkel

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Re: Long term cold hardy citrus breeding project
« Reply #27 on: December 21, 2017, 11:46:23 AM »
seed import is forbidden by the EU since about 1 year.

starch

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Re: Long term cold hardy citrus breeding project
« Reply #28 on: December 21, 2017, 12:00:24 PM »
Walt,

This is an ambitious and exciting project. Thank you for sharing it with us!

I have family in Middle Tennessee (Zone 7a) and they all love citrus. And years ago I used to ship them citrus that I grew on my trees. But now with the psyllid and the quarantine on citrus, I can't send them citrus from my yard in AZ anymore. But I would love for them to be able to grow some of their own citrus.

I have one family member in TN who is a little more enthusiastic about growing plants and I think he would be very interested in being part of your trial process.

- Mark

Ilya11

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Re: Long term cold hardy citrus breeding project
« Reply #29 on: December 21, 2017, 12:23:16 PM »
Llya11, no I think seeds would be OK.  I have sent seeds of various citrus cultivars to Europe and Asia, and by the time they arrived 60 percent  were dead or damaged.   I assume that poncirus+ is as slow growing as regular poncirus, therefore how many years do you think it would take from germination to fruiting.?
Of course it depends on conditions, when grown in the winter under the lamps for two years and then planted outside I observe that most of the poncirus seedlings flower in 5-7 years.
Best regards,
                       Ilya

Walt

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Re: Long term cold hardy citrus breeding project
« Reply #30 on: December 21, 2017, 12:39:36 PM »
There was some talk about using early maturing citrus. The earliest maturing mandarin I know of is the Xie Shan satsuma (which can easily be purchased in the USA).  Xie Shan can mature as early as mid-September

Mid September would be very good here.  Most would have to ripen inside even if they were winter-hardy.  I have assumed that early ripening genes would come from P. trifoliata as they ripen here.  But they don't ripen sweet.

Walt

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Re: Long term cold hardy citrus breeding project
« Reply #31 on: December 21, 2017, 12:44:33 PM »
Walt, I looked up Livingston Creek in NC: it's crossing hwy 74 just west of Delco in Columbus county, on the south coast of NC just one county east of Wilmington. I've driven through there several times this year. I'd love to look for swamp lemons over there, but since that's 4.5 hours from where I live, don't know when I'll be able to go out there. My husband's father grew up in Whiteville in Columbus county, and he tells me he used to season fish they caught from local rivers with a small wild citrus that grew there, but he says he didn't call it a lemon.

Thank you.  Any lead is useful.  I'd certainly help with gas money.  I don't know about you, but I wouldn't recognize P. trifoliata during the winter.  So there is time for planning.

Walt

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Re: Long term cold hardy citrus breeding project
« Reply #32 on: December 21, 2017, 12:54:50 PM »
I think two new varieties Iwasaki and Nichinan are slightly earlier than Xie Shan.

Walt I can send you a cutting from my FD now if you think you can work with it but if not we can wait until later in spring.

Any chance we can get poncirus + into the US?

Thanks for the information about early ripening mandarins.  Ill be trying all three that have been recommended. 
About the FD cutting, my P. trifoliata that are big enough for me to graft are all outsice and dormant.  I do have 3 citranges that are inside and big enough to graft are just surviving due to not enough light.  I like to graft onto rapidly growing stocks so they heal fast, before the scion dries out.
I have grafted apples in late spring with dormant scions onto leafed out stocks.  I assume that would be best for citrus, right?

Citradia

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Re: Long term cold hardy citrus breeding project
« Reply #33 on: December 22, 2017, 06:44:05 PM »
Walt, I do know what PT looks like in winter and some brightly colored fruits may still be in branches, so I'd like to try to find the trees you spoke of. I also intend to call some of Whiteville's nurseries to see if they may already have some of their local PT for sale. I'd drive 4 hours on a weekend to get my hands on a better quality hardy citrus. I need to wait until after the holidays though.

Walt

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Re: Long term cold hardy citrus breeding project
« Reply #34 on: December 28, 2017, 02:25:24 PM »
I want everyone to know that, while i have read read about citrus from many sources, most of what I know I learned from the now gone citrus forum, whose name I don't remember.  But I do see many names here that I recognize, people who I highly respect, from that forum.  It good to have such experts taking this project seriously.

Tom

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Re: Long term cold hardy citrus breeding project
« Reply #35 on: December 28, 2017, 10:10:01 PM »
I think the old forum was  citrusforumup.com  it is long gone but there are efforts being made to resurrect it or at least try to make the archives accessible. It was owned and operated by Laaz and he had several administrative assistants [including Millet who started this site] but he called them something else. Seems that nobody’s heard from Laaz lately.

Walt

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Re: Long term cold hardy citrus breeding project
« Reply #36 on: December 29, 2017, 04:13:19 PM »
That's the one.

 

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