test
node1
PO:0009013
portion of meristem
tissue
node2
PO:0000226
rib zone
node1->node2
node4
PO:0006079
shoot system meristem
node1->node4
node8
PO:0020144
apical meristem
node1->node8
node3
PO:0009007
portion of plant
tissue
node3->node1
node5
PO:0020148
shoot apical meristem
node4->node5
node5->node2
node6
BFO:0000001
entity
node7
BFO:0000002
continuant
node6->node7
node7->node7
node11
BFO:0000004
independent
continuant
node7->node11
node8->node5
node9
PO:0009008
plant organ
node10
PO:0025004
plant axis
node9->node10
node12
PO:0025029
shoot axis
node10->node12
node11->node11
node16
BFO:0000040
material entity
node11->node16
node13
PO:0000037
shoot axis apex
node12->node13
node13->node5
node14
PO:0009011
plant structure
node14->node3
node15
PO:0025496
multi-tissue plant
structure
node14->node15
node19
PO:0025497
collective plant
structure
node14->node19
node15->node9
node17
PO:0025131
plant anatomical
entity
node16->node17
node17->node14
node18
PO:0009006
shoot system
node18->node4
node18->node12
node20
PO:0025007
collective plant
organ structure
node19->node20
node20->node18