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Post by ilya11 on Aug 30, 2021 13:36:01 GMT -5
This year I tried to produce hybrids with Meski by pollination of PoncirusPlus flowers, but unfortunately most of fruitlets were destroyed by strong winds.
In 2019 I got 95 hybrids of 5star with Gosset and subjected them at the stage of 10 cm seedlings to artificial freezing at -8C for two hours. Before they were acclimatized at +12C for two weeks. Eight of them were completely untouched with 26 other that turned to be stem hardy.
Majority of them are growing rather fast with several reaching already 1 m height at the South of France.
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till
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Posts: 160
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Post by till on Aug 30, 2021 15:30:15 GMT -5
Beautiful plants! I wish you much luck. And it will help us to understand more about the potential of acidless varieties.
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Post by mikkel on Sept 5, 2021 10:01:03 GMT -5
Till, don`t you think we should buy a patch of land in the south for our plants to raise them up?
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till
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Posts: 160
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Post by till on Sept 6, 2021 15:37:59 GMT -5
Mikkel, yes maybe. But I should perhaps first buy a piece of land in the lowlands 30km away or in the next valley 30min by feet away. The lowlands would add an everage plus of 4°C to my climate and the next valley perhaps 2°C or a spring two weeks earlier. It is somewhat crazy that I invest so much to grow Poncirus in my garden while it is perfectly growing without any care only 30km away.
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Post by martweb on Mar 29, 2022 6:01:26 GMT -5
Do Minneola as derived from Duncan and New Zealand Lemonade also contain sweet genes?
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till
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Post by till on Apr 5, 2022 14:27:19 GMT -5
Martweb, do Duncan and New Zealand Lemonade have any acidless parents in their lineage? I mean we must distinguish between sweet citrus and acidless (extrem low acid) citrus.
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till
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Posts: 160
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Post by till on Apr 5, 2022 14:31:38 GMT -5
I have pollinated C. ichangensis and Swamp Lemon with Sucrena (Succory) pollen. I hope so much that I get fruits. The fruits from last year of Chandler (Siamese Sweet x Siamese Pink) and Sucrena are still not ripe. Would I have more patience or the plants be more hasty! Then I would already now if I have hybrids with Poncirus.
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jibro
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Czech Rep. | USDA 6b
Posts: 163
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Post by jibro on Apr 26, 2022 1:43:31 GMT -5
I have made many crosses last year but almost all pollinated flowers dropped later, so I have only one still unripped fruit left on Nagami Kumquat pollinated with Palestine Sweet Lime. This year I have only 2 flowers on my "more edible" Poncirus "Hodonin" so my options are quite limited, I will try to make: Hodonin x Palestine Lime Chandler x Hodonin Nagami x Hodonin
One of my goals is to use these possible new hybrids as a parent for the final cross: (Nagami x Palestine Sweet Lime) x (Hodonin x Palestine Sweet Lime)
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Post by mikkel on May 2, 2022 17:07:34 GMT -5
I am curious! What is your intention behind this crossing formula? (Nagami x Palestine Sweet Lime) x (Hodonin x Palestine Sweet Lime). I'm guessing it's to find a Nagami x Pt hybrid with a homozygous allele set for acid free fruit?
In this way, a precocious-flowering gene could also be inherited homozygously. Provided that it is only 1 gene that causes the precocious flowering....
Perhaps and purely hypothetically, a cross with Pt #7 (Nagami x Pt #7) x (Hodonin x Pt #7) could provide sufficient winter hardiness at the same time. Whereby, however, is still unknown how the acid-free in Pt #7 is genetically determined....
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jibro
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Czech Rep. | USDA 6b
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Post by jibro on May 3, 2022 1:07:39 GMT -5
My intention is to combine acidless, kumquat, and Poncirus genes. I want to use Kumquat for dormancy, hardiness, reducing the number of seeds, and suppression of Poncirus bad aftertaste. I will use other acidless varieties too, Palestine lime is not my first choice, it has some disadvantages: bland taste and highly polyembryony, so there is no chance for cross Poncirus x Palestine to be zygotic and use F2 from self-pollination to find a hybrid with acidless/sweet fruit. Hybrid Nagami x Palestine Sweet Lime can be zygotic and I want to make new Lemonquat but with acidless lime or lemon, it may have interesting fruit and it will give me the opportunity for next crosses with Poncirus or (Poncirus x Palestine)
I have first open flowers on Chandler and only 2 flowers on Hodonin, Chandler is still young plant so I can get only one max two fruits this year so I will make only Chandler x Hodonin and Hodonin x Chandler this year.
I already pollinated lots of Ichangstar 60 flowers with Chandler and I will use Chandler pollen for my other trifoliate with bad taste too.
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Post by poncirusguy on May 3, 2022 7:59:17 GMT -5
Have you considered using Marumi kumquat. It is zygotic
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jibro
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Czech Rep. | USDA 6b
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Post by jibro on May 3, 2022 10:38:45 GMT -5
No, I don't have Marumi and Nagami is also zygotic, I want to use Meiwa for precocious flowering but it may be more difficult because Meiwa is not zygotic at least according to this article: redwoodbarn.com/PDF/Whichcitrusfromseed.pdf
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Post by martweb on May 3, 2022 12:23:57 GMT -5
I also want a Kumquat with lemony taste of the rind. So I'll try Marumi x NZL NZL x Marumi Nordmann Seedless x NZL The problem is Agrumi Lenzi has no NZL at the moment, will have to wait till autumn.
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Post by mikkel on May 4, 2022 10:12:23 GMT -5
what just crossed my mind, with the crossing scheme you suggested, you could possibly also try to transfer the early flowering of the precocious Poncirus or even every other precocious type.... Precocious flowering definitely depends on several genes, which is why still a large number of seedlings would be needed but theoretically (and some luck) I think that would be the way....
(Citrus x prec Pt) x (Citrus x prec Pt)
or
(Citrus x prec. Citrus) x (Citrus x prec. Citrus)
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jibro
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Czech Rep. | USDA 6b
Posts: 163
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Post by jibro on May 4, 2022 13:55:58 GMT -5
I may try it this season, my grafted Fast Flowering PT has lots of flower buds:
These combinations are possible for me:
Nagami x FF PT N1 Tri Voss x FF PT Ichangstar 60 x FF PT Clementine Oronules x FF PT
I can also use FF PT as a seed parent:
FF PT x Chandler FF PT x Ichangensis Ivia
But I am still waiting for the first fruits from FF PT so not much hope that it will have fruits this year and I don't know if FF PT is zygotic...
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