( ( ( The appearance ) ( of ( new tillers ) ) ) ( ( occurs ( through ( ( ( ( the activation ) ( of ( axillary buds ) ) ) and ) ( ( the development ) ( of ( the ( first ( leaf primordium ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN appearance)) (PP (IN of) (NP (JJ new) (NNS tillers)))) (VP (VBZ occurs) (PP (IN through) (NP (NP (NP (DT the) (NN activation)) (PP (IN of) (NP (JJ axillary) (NNS buds)))) (CC and) (NP (NP (DT the) (NN development)) (PP (IN of) (NP (DT the) (JJ first) (NN leaf) (NN primordium))))))) (. .)))
The appearance of new tillers occurs through the activation of axillary buds and the development of the first leaf primordium.
(ROOT (S (NP (NP (DT A) (-LRB- -LRB-) (NN n) (-RRB- -RRB-)) (NP (DT an) (JJ axillary) (NN bud))) (VP (VBZ is) (PP (IN above) (NP (DT each) (NN leaf) (NN scar)))) (. .)))