test
node1
TO:0000928
plant structure
growth and
development trait
node2
TO:0000654
shoot system growth
and development trait
node1->node2
node5
TO:0000096
ratooning ability
node2->node5
node3
TO:0000357
plant growth and
development trait
node3->node1
node4
TO:0000250
plant vigor trait
node4->node5
node6
TO:0000387
plant trait
node6->node4
node6->node3