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  • 1 Post By AtantaR
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Question About Selfing!!!!!!???

This is a discussion on Question About Selfing!!!!!!??? within the New Growers: Ask the Senior Members forums, part of the New Growers category; To the Breeder/genetic savy Orchid friends and all orchid friends, I call for your knowledge...lol ...

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  1. #1
    AtantaR's Avatar
    AtantaR is offline 0101101000101110
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    Cool Question About Selfing!!!!!!???

    To the Breeder/genetic savy Orchid friends and all orchid friends, I call for your knowledge...lol



    What is your opinions on selfing an orchid? Do specific flowers mater or is it just all the same genetics? Are there more instability in the genetics in hybrids versus species? Would selfing bring back old traits bond by its lineage? Would selfing make beneficial recessive genes more dominant? Variable seeds more/less? Bigger varied spectrum of siblings? (Potinara Alexia Williamsun 'Waiakea' x Self) for an example....lets converse

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    Halloamey is offline Senior Member
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    Andrew there are many aspects to your question and the answer will depend on the starting plant (species or hybrid etc). Firstly to start with orchids in general are not selfing and many species are obligate out-crossers i.e. selfed flowers will either not set fruit and or not produce any fertile seeds. This process is determined by genes belonging to the Self-incompatibility Locus (SI locus) to put it simply, the stigma has a mechanism to recognise the pollen from the same plant and it will either not allow the pollen to germinate or abort the flower to stop the process of fertilization.
    In species where selfing and outcrossing both occurs, you can create homozygous plants for a certain characteristic by simply selfing them. For eg. When you self a plant the recessive allels which are not expressed owing to the presence of the dominant allel in the heterozygous parent (Dd) have a chance of being expressed in some of the offspring thus showing a different phenotype (dd).
    When you consider hybrids things get very complicated and that is why you will see a lot of variation within the offspring of hybrids or from the selfings of the hybrids and different amounts of the parental genomes will be present and expressed in the siblings.
    The stability and fertility of certain hybrids is dependent on the genetic similarity and closeness of the species hybridized. For eg. it is well known that the Asconopsis (Ascocentrum and Phalaenopsis hybrid) are poor plants for breedings, this is because Ascocentrum and Phalaenopsis are very distant related with different chromosome numbers and gene arrangement. While undergoing meiosis the cells are not able to divide the genetic material equally between the resulting gametes producing mostly non-functional gametes. They are better as seed parents than pollen parents as sometimes during gamete formation, meiosis is arrested and a 2n ovule remains as it is and is then fertilized by pollen giving offspring.

  3. #3
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    I would say it depends. Sometimes a selfing can magnify the worst qualities of the parent and sometimes it can magnify the best qualities. Each seedling would be a slightly different story.

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    Thank you, Amey for your expertise on this matter. Very informative and educationally sound. Based upon what you have said. I am assuming, a selfing of such a complex hybrid, is either a dead on "miracle" or a total waste of time. Simply the fact that i dont know which traits are recessive, makeing it into a serious game of dice. Though isnt everything with genetics? lol (not including GMO) <----bad news... I ask cause i self pollinated Potinara Alexia Williamsun 'Waiakea' and its growing a pod.
    Potinara Alexia Williamsun = (Pot. Hisako Akatsuka x Slc. Precious Jewel)

    Pot. Hisako AkatsukaName:  Pot_HisakoAkatsuka'VolcanoQueen'HCC.jpg
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    Slc. Precious JewelName:  10180002-Slc-Precious-Jewel.jpg
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    An grand/great grand parents
    Attachment 71959
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    Attached Images Attached Images  

  5. #5
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    This is my Pot. Alexia Williamsun 'Waiakea'.. sorry the pictures arent the greatest and the flower is a pod now
    Name:  IMG_20140429_182018_055 (Custom).jpg
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    ---------- Post Merged at 05:36 PM ----------

    I am thinking the recessive genes would be that of the Laelia family and could possibly come out more in this sibling mix

    ---------- Post Merged at 05:51 PM ----------

    after looking around the interwebs i found this...an orchid that intentionally pollinates itself if need be....not even another flower off the same plant by an insect or something.....literally the flower pollinates itself if no pollinators ever come along...Amazing!!! http://www.nbcnews.com/id/13466115/n.../#.U5twetJDtjs

    ---------- Post Merged at 05:52 PM ----------

    http://www.orchidspecies.com/vandaamesiana.htm

  6. #6
    AtantaR's Avatar
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    and the seed pod after 3 months of growing...i think im just letting it grow for the fun of it, who knows!!
    Name:  10540397_10203243745868603_7545052131131681408_n (Custom).jpg
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