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intraspecific bush beans

Posted by venom_within 5b (My Page) on
Mon, May 22, 06 at 14:53

Hello everyone! I'm new to the forum, but not to genetics. Although I know little about plant genetics, I do know most genetics basics as I breed and hybridize North American colubrid snake species/genera.

I recently moved from Texas to Michigan, so this is my first year to have a "northern" garden where the growing season is practically half of what I'm used to. I've already killed my tomatoes :( . This will also be the first year I attempt to cross some of the most common varieties of veges, just to get a feel for it.

My first question is regarding Phaseolus vulgaris. I will be growing "Dragon Tongue" and "Royal Burgundy" bush beans, but have not been able to find any info about crossing different "strains" of the same species. Since they do not seem to be seperate sub-species, would this even be considered a cross? Or would I wind up with some generic garden bean that erases all that has been achieved by selective breeding to develope each parent strain? I know very well that the F1's won't be anything special, and that the F2's will have wildly varied geno- and phenotypes. What I don't know is which genes are dominant, recessive, co-dominant, and that sort of thing.

I'm sure this "cross" has been done before, so is there any info out there I just haven't found yet? Or better yet, has anyone here tried this yet?

Also, what is the best method to handpollinating beans without accidental selfpollination occuring?

Any help would be greatly appreciated!


Follow-Up Postings:

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RE: intraspecific bush beans

First, I'll say you picked a very hard plant to cross.Beans are very self pollinating.You have to remove the anther(male part of the flower)and then you can pollinate the female part of the flower.Bush beans are recessive to the dominant pole bean.So if you pollinate a bush bean with a pole the F1 should be a pole.Thats a marker that lets you know that the cross took.I'll find the book thats shows you how to cross beans if you like.


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RE: intraspecific bush beans

Thanx! I was hoping for some easier things to cross for my first few tries, but everything else will most certainly die in this aweful attempt at gardening... :( I tried hard starting my seeds, they did ok, then not so ok, then suddenly got bigger, I tried hardening them off, then the day after planting (tomatoes and eggplant now), the sun got MUCH hotter and they are all crispy sticks of what the once were... Full sun my butt!!! Even with plenty of water, they all turned whitish and dried up.

I'm expecting the beans to do much better as they START life in the garden, so there's no drastic change or anything.

I guess the most important things I need to know is WHEN to remove the stamens and which pod color and/or shape (yellow vs. purple, and flat vs. round) are dominant as both are bush types. I intend to try both as mother and father to heighten my chances of success.


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RE: intraspecific bush beans

Try Carol Depp's book " Breeding Your Own Vegetables" for instructions on cross breeding . Corn, cukes, melons, squash, pumpkins and sunflowers are easiest to cross breed.Try favas soybeans of the North for beans ( actually a vetch ) .


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RE: intraspecific bush beans

what snakes do you breed ? how many types? Any in teresting results ?


 
 

 

 


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