Elm Trees

Elm Trees

I know this probably isn't the best forum for this, but if someone can point me towards some websites about how they are creating the Dutch Elm disease resistant trees, I'd appreciate it. I've done some googling and everything I've come up with looks like greek to me (and it's written in english). I live in the tree heavy state of Maine, and Elms used to be a huge part of things up here until that disease wiped them out. Now that I'm on over 100 acres, if these dutch elm resistant trees could work out... well, I'd plant them in a heart beat. My problem is basically how the resistance was created in the trees. Did they do that with standard splicing and breeding techniques, or did they go in and tinker with genetics? And since I'm known for killing plant life, I thought of y'all for help. ~GRIN~ Thanks!!
Need a spot of help with the living room

Need a spot of help with the living room

Questions and a plant ID

Questions and a plant ID

Mystery pod and LOTS OF BEANS

Mystery pod and LOTS OF BEANS

Passion Flower Question

Passion Flower Question

Lafter rose

Lafter rose

London Bedroom

London Bedroom