Call 'getData' method from your first tree to get the selected node data, and then call 'append' method to append these data to your second tree.
var node = $('#orgResTree').tree('getSelected');
var data = $('#orgResTree').tree('getData', node.target); // get the tree node data
$('#seldOrgTree').tree('append',{
parent: ..., // specify the parent node to be appended
data: [data]
});