Viewing post #669241 by Chromaphyto

You are viewing a single post made by Chromaphyto in the thread called Genetics of Sempervivum.
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Jul 29, 2014 11:43 AM CST
Name: Olivier
Buizingen, Belgium
Hi all

I have read the totality of this interesting thread and the Toby's article. Unfortunately,, I don't understand videos because my english is too bad.
I have a lot of questions. I 'm a belgian breeder with essentially botanical species and some cultivars.

Is there a "general" rule to the inheritance of Sempervivum? What are recessive or dominant genes, for example, the colors of flowers or foliage?
What contribution mother and father do they bring in the crossing? For example, in the hybridization of roses, the mother brings the foliage and plant habit, the father the shape of flowers, etc ... Is that similar rules are known in the Sempervivum genus?

I have difficult to obtain mature pollen of Jovibarba. I place the flowers inside behind a window but the pollen does not become mature. How shall we do it?

In the Toby's article, I read:
Diploid arachnoideum (AA) X Diploid tectorum (TT) —> sterile or near sterile tufted hybrid (AT)
Tetraploid arachnoideum (AAAA) X Tetraploid tectorum (TTTT) —> fertile tufted hybrid (AATT)


What result can you have with:
Diploid x tetraploid ?
Triploid x tetraploid or diploid ?
My S x pomelii that I collected in Massif Central give not seedlings (S. x pomelii is triploid because arachnoideum tomentosum is diploid in this area and arvernense is teraploid). Is that I can use for hybridizations ?

Last question:
What method do you use for labels?
How to distinguish several different crosses on a single stem of flowers?

Sorry for my bad english and thanks for your patience ;)

Olivier
www.sempervivum.legtux.org
www.chromaphyosemion.be

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