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- #141
Blue-Jay
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For a long time I believed the notion that beans don't cross but in my garden it is very far from true. Bumblebees are the culprits. They often don't even wait for the flower to open, they chew or pry it open, I'v watched them do it.
I'm sure if I wanted to cross specific beans all I would have to do is plant say, five seeds on the same pole. One variety A and the other four variety B. I don't know what the exact breakdown would be but a high % of the seeds on A and some on B would be crossed. Then just grow out the seeds from A for a couple generations and find the new beans.
I have a large tan bean from a cross between KY Wonder and a black bean called Ideal Market. I think last year was the F4 and I'v been planting just the large tan seeds but I still got most of the original segregation in last years crop. So, what I don't know is how long it would take to stabilize for a specific new kind.
@reedy,
I think the time it takes a bean cross to stablize depends on the cross. I really don't know why but some will stablize faster than others. I've had some beans take two or three generations to stablize. I have seen a couple that were stable right from the start, and I have one or two crosses that each time I grow them they just keep churning out variations of seed coats, pod differences and sometimes a little bit of difference in their growth.
I have one cross that occured 41 years ago, and this bean makes three different seed coats every time it's grown. The plants along with the pods and blossom colors all seem uniform. I believe that this one particular cross is stable.