test
node1
TO:0000357
plant growth and
development trait
node2
TO:0000933
plant phenological
trait
node1->node2
node3
TO:0002616
flowering time trait
node2->node3
node4
TO:0000344
days to flowering
trait
node3->node4
node6
CO_339:0000195
lentil time to
flowering trait
node4->node6
node5
TO:0000387
plant trait
node5->node1