Software
Houzz Logo Print
pepper_rancher

Understanding Cross-Polination Results

18 years ago

Please help me to understand hybrid characteristics outcome.

Question 1: The seeds out of a single pod that was formed from a cross-polination will be

A. All the same as eachother, or

B. Each seed in the pod will form plants with different characteristics.

Question 2: The seeds from different pods from the same cross-polination parents will be:

A. All the same plant

B. Slightly different

C. Can vary greatly from eachother.

Comments (10)

  • 18 years ago

    I started here:

    http://www.ingentaconnect.com/content/haworth/jns/2005/00000006/F0020002/art00004;jsessionid=4d22me6ilr4c2.alexandra

    Went to here:

    http://www.ingentaconnect.com/search;jsessionid=1dtwat2pfyl2p.alexandra?database=1&title=hybrid%20seed%20production

    Came across this:

    http://books.google.com/books?id=f7djBk80Z6oC

    There are names of books and authors if you want to see if a library has them.Some Universities have online libraries too.

    I think the book was $60.00.OUCH
    The previews(what I'm reading now) have some interesting stuff in them.
    Some of the reference material at the end of the preview might be found on the net and a library might subscribe to the company that has the book online as a pdf.A lot of times these kind of research people donate subscriptions to libraries and universities.

    I'll probably find some more stuff.Going to try Dept. of agriculture see if the chile institute will answer an E-Mail about help in finding info on hybrids that doesn't take a brainiac to understand.

    By what little there is that I've read so far, I think all seeds in a pod will be the same.
    It seems I read that somewhere in my search but I don't remember if it was because they controlled the fertilization process or the plants genetics or something.
    I know with corn that you can have different kernals of several kinds of corn on one ear.Each piece of cornsilk only pollinates a couple seeds.

    One way of producing a hybrid pepperr for commercial seed production is to make a pepper plant that all males are sterile and also make another plant that all the females are sterile.
    Plant them together to produce your hybrid.
    Only males of plant A are fertile/Viable whatever.
    Only females of plant B are fertile.
    I'm assuming they use sterile females and males so they know which plant will produce the seeds and what the seeds will grow..
    Lets say if plant A was to Pollinate plant B you create plant C.
    But if Plant B pollinated A you would get Plant D not C.
    A and B would be hybrids of whatever your crosses needed to be to make the plant you want to end up with...Hybridised to make sterile females or males depending on what you need to produce your end resulting Hybrid.
    That would somewhat explain why some hybrids are stable-produce seed true to the parent-like Black Pearl.
    It's a stable Hybrid.
    There is more to it I'm sure,like possibly having to go through generations of inbreading before you get a stable hybrid or whatever else you have to do that might be species specific or have something to do with stuff I don't know about.

    I think I read on a forum somewhere that a guy had some Cayene pods from a plant that the seeds grew into many variations of the original plant.But that still doesn't tell you if just different pods got pollinated by different plants or if one pod could be producing several crosses of seeds by itself.
    Google time I guess.

  • 18 years ago

    lol. Smokemaster, it was a multiple choice question! Nice essay though :) You may have touched on what I was looking for though. If plant A pollenates plant B, it will always produce plant C. (only one result) Is this correct?

    ----------------------------------------------------------

    Question 1: The seeds out of a single pod that was formed from a cross-polination will be
    A. All the same as eachother, or
    B. Each seed in the pod will form plants with different characteristics.

    Question 2: The seeds from different pods from the same cross-polination parents will be:
    A. All the same plant
    B. Slightly different
    C. Can vary greatly from eachother.

  • 18 years ago

    Question 3:
    If A is crossed with B will the result be the same if B is crossed with A? (reversing the gender of the cross)

  • 18 years ago

    The seeds in a single pod are not all identical genetically. Each seed is the result of one pollen grain and one egg. All of the F1 seeds in the pod from the initial cross should be the same though since the parents were probably homozygous at every allele if you used completely stable parents. When you grow those seeds and let them self pollinate the seeds in each pod (F2 seeds) should vary a whole lot. Certain genes will have a copy from both parents and some genes will have 2 copies from just one of the parent plants. If you used jalapeños and bell peppers then gene A could have a jalapeño and a bell pepper copy. Gene B could have 2 jalapeño copies. Gene C could have 2 bell pepper copies. If you planted 10 F2 seeds they could all be different.

    If both parents are very stable and there is basically no genetic variation in each parent plant then for the initial F1 seeds they will all end up about the same for questions 1 and 2. If the parents are already hybrids or heterozygous at many of their alleles then all the seeds will be different.

    My answer for question 3 is it depends and I don't know enough about pepper genetics. Certain species it makes no difference and others it makes a huge difference. For tigers and lions it makes a huge difference which one was the parent. Some species imprint certain genes. The same exact gene will act differently if it comes from the mother versus the father. Male lions imprint a gene that makes the baby grow large. Female lions imprint a gene to make it stay small. The male wants large strong children but the female doesn't want babies so big because it has to be inside it. When both parents are lions the genes cancel each other out and the lions are normal sized. But when the father is a lion and the mother is a tiger the liger child is much bigger than either one of the parents when full grown. If it is a tigon (male tiger x female lion) then they are slightly smaller than either parent.

  • 18 years ago

    Wait a minute...

    You're telling me that there is such a thing as a Tigon!?

    Forget peppers, I want to grow Tigons! lol.

    Anyway, thanks for answering my questions, time to make some crosses :)

  • 18 years ago

    House eating Lemon drops weren't enough?
    Now it's Tigons........
    Gonna cross them with Bhut Jolokias to get a really pissed off version?

  • 18 years ago

    Hey pepper_rancher,

    Great responses thus far.

    IÂm not sure if the following link will answer your question any better or just confuse things. If youÂre like me, a diagram or two usually helps. It covers Gregor MendelÂs experimentation and findings by cross breading peas. His results are the basis for understanding hereditary traits.

    IÂm sure someone posted the link below in another discussion on cross pollination but I canÂt find the original thread to point you to.

    Please keep us up to date on your progress breeding Tigons!

    Bill

    Here is a link that might be useful: Mendel

  • 18 years ago

    LOL, on reading the multiple choice questions I had hopes of getting my genetic ideas straightened out easily. A few essays later it is obvious that it won't be that easy :)

    Ligers and Tigons and bears....er, peppers, oh my!

    I'm pretty sure the genetics of it all will not allow for crossing tigers or lions with peppers ;)

  • 18 years ago

    Here is something I found:
    "In some cases, the second generation seed viability depends on which species pollinates the other. When frutescens pollinates annuum, there is no viable seed, but when annuum pollinates frutescens, there is a limited amount of viable seed."

    http://www.fiery-foods.com/dave/garden8.asp

  • 16 years ago

    When I do crosses, I do both ends of the cross (Male A x Female B and Female A x Male B) just in case one is better than the other.

    So far in the crossings I have done, I have found that the Female Host (The plant playing the roll of pod/seed bearer) tends to carry over more traits than the Male (pollen donor) plant.

    Here is a Pepper Crossing Guide I am working on...

    http://dumped-archives.ath.cx/habs/pepper_genetics.html

    Note: I originally thought that Dark green immature was dominant over lighter green, but after crossing a Caribbean Red (Female) (Light green immature) and an Orange Habanero (Male)(Dark Green Immature) I discovered that the pods were medium green (Like they met in the middle).

    Hope that helps :)

Sponsored