( ( ( Embryonic origin ) ( of ( the ( Arabidopsis primary ) ) ) ) ( ( ( ( root and ) root ) ( meristem initials ) ) . ) )
(ROOT (S (NP (NP (JJ Embryonic) (NN origin)) (PP (IN of) (NP (DT the) (NNP Arabidopsis) (NN primary)))) (VP (VBP root) (CC and) (VBP root) (NP (NN meristem) (NNS initials))) (. .)))
Embryonic origin of the Arabidopsis primary root and root meristem initials.
(ROOT (S (NP (NNS Roots)) (VP (VBP grow) (PP (IN in) (NP (NN length) (CC and) (NN width))) (PP (IN from) (NP (DT the) (JJ primary) (CC and) (JJ secondary) (NN meristem)))) (. .)))