test
node1
TO:0000928
plant structure
growth and
development trait
node2
TO:0000654
shoot system growth
and development trait
node1->node2
node4
TO:0000329
tillering ability
node2->node4
node3
TO:0000357
plant growth and
development trait
node3->node1
node5
TO:0000387
plant trait
node5->node3