till
Full Member
Posts: 154
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Post by till on Dec 3, 2020 11:01:22 GMT -5
I tried to get material from that gene bank. They only send budwood, no seeds. (At that time seeds would have passed European customs.) And custom restrictions make it impossible to get budwood to Europe. They did not even send to a friend of mine in Japan unless he confirmed that he will not forward the budwood outside Japan. It is more or less impossible for private persons to get something from them, although they would in principle send to private persons when they declare that they will use the material only in their own defined experiments and when they present an official permission to import the material to their countries.
I was frusted... And then I decided to leave it as it is because I will probably reach my goals with those vaieties that I have already or can easily get. Still, I wish that goverments would value your (unsalaried) breeding attempt instead of inventing hindrances for it... Well, everybody has his reasons and perspectives... We must respect that and make the best out of it for ourselves.
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jibro
Full Member
Czech Rep. | USDA 6b
Posts: 118
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Post by jibro on Dec 5, 2020 7:02:23 GMT -5
Last year I tested several different Poncirus fruit, "variety Tachov" had the best taste, much more less sour than others, with only a little bitterness. It was possible also easily separate pulp from rind and fruit was without juice, it was not possible to squeeze single drop of juice from whole fruit. Tachov fruit 2019 More here: citrusy.info/test-5-ruznych-trifoliat-s-pozivatelnymi-plody/I asked for Tachov fruits this year again and unfortunelly they looks like this  There is almost nothing to eat, the white albedo is also thicker this year. Does anybody knows what may cause different thickness of rind and amount of pulp in citrus fruits from the same plant in different years? Amazing year 2020   |
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Post by ilya11 on Dec 5, 2020 9:53:11 GMT -5
Many factors are responsible for the increase in rind thickness.
The most known are too much nitrogen, too little phosphorous and potassium. Drought can be also a factor as well as magnesium deficiency. |
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jibro
Full Member
Czech Rep. | USDA 6b
Posts: 118
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Post by jibro on Dec 5, 2020 10:52:05 GMT -5
I think owner of Tachov tree does not fertilize it at all, we had a lot of rainfall this year and colder summer than in previous years, may lack of heat cause this too?
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till
Full Member
Posts: 154
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Post by till on Dec 8, 2020 17:44:33 GMT -5
Just a note on the thornless Poncirus in NIAS gene bank: I managed to find a scientic article that mentions it and contacted one of its authors. He said that he would not recommend this thornless type for breeding because it suffers from a general difficulty to produce side shoots. As a reminder: thorns are specialized side shoots. That means the mutation of this Poncirus is not primarily that it has no thorns but that it can hardly produce side shoots. Lack of thorns is a side effect.
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roberto
Junior Member
Best Regards from Vienna Roberto
Posts: 92
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Post by roberto on Dec 9, 2020 6:48:50 GMT -5
Just a note on the thornless Poncirus in NIAS gene bank: I managed to find a scientic article that mentions it and contacted one of its authors. He said that he would not recommend this thornless type for breeding because it suffers from a general difficulty to produce side shoots. As a reminder: thorns are specialized side shoots. That means the mutation of this Poncirus is not primarily that it has no thorns but that it can hardly produce side shoots. Lack of thorns is a side effect. Good for rootstock or not? |
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till
Full Member
Posts: 154
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Post by till on Dec 9, 2020 14:13:40 GMT -5
I see no plus in its use as a root stock. Why should it behave differently than normal Poncirus?
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jibro
Full Member
Czech Rep. | USDA 6b
Posts: 118
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Post by jibro on Dec 10, 2020 6:05:22 GMT -5
It doesn't matter anyway, there is no chance to get it from Japan, I am looking for trifoliate seedlings with smaller thorns and so far I found one with thicker and short thorns, it is seedling from my Flying Dragon.
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zap
Full Member
Posts: 109
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Post by zap on Dec 10, 2020 15:13:22 GMT -5
I had only citron pollen at that point, so potentially I could have hybrids with C.medica "Corsican".
It has been 100 years yet W.Swingle's citremons still retain that bitter flavor. (I believe W.Swingle -may have- used C.medica in some early "Citremon" crosses)
-But you are starting with less bad poncirin flavors! That may save you over 100 years of breeding work. (compared to the existing Citremons)
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Post by ilya11 on Dec 10, 2020 15:36:42 GMT -5
Zap, citremons are hybrids between poncirus and lemons, not with citrons. Citr in their names comes from Citrus trifoliata
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roberto
Junior Member
Best Regards from Vienna Roberto
Posts: 92
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Post by roberto on Dec 11, 2020 6:30:43 GMT -5
I see no plus in its use as a root stock. Why should it behave differently than normal Poncirus? No thorns and straight growth habit. |
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Post by MarcV on Dec 11, 2020 9:41:49 GMT -5
Zap, citremons are hybrids between poncirus and lemons, not with citrons. Citr in their names comes from Citrus trifoliataThis name giving never made any sense to me. "Ponciremon" would be more logical. |
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Florian
Junior Member
Solothurn, Switzerland
Posts: 78
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Post by Florian on Dec 11, 2020 10:51:33 GMT -5
Zap, citremons are hybrids between poncirus and lemons, not with citrons. Citr in their names comes from Citrus trifoliataThis name giving never made any sense to me. "Ponciremon" would be more logical. It makes sense when you call Poncirus Citrus trifoliata, which I prefer since it is the older name. |
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Post by MarcV on Dec 11, 2020 10:53:48 GMT -5
This name giving never made any sense to me. "Ponciremon" would be more logical. It makes sense when you call Poncirus Citrus trifoliata, which I prefer since it is the older name. True, but if you call it "citrus" it can be any citrus... |
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Post by mikkel on Dec 11, 2020 13:48:42 GMT -5
jibro Jiri, your pictures are gone. Even on the host.
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There is almost nothing to eat, the white albedo is also thicker this year. Does anybody knows what may cause different thickness of rind and amount of pulp in citrus fruits from the same plant in different years?
