Variation in leaf development characteristics and leaf water-holding ability of young Cylocarya paliurus seedlings under NaCl stress.

The stoma morphology,leaf development characteristics and leaf water-holding ability of Cylocarya paliurus seedlings from three provenances were investigated after salt treatments.C.paliurus seedlings were treated with four levels(control,0.1% NaCl,0.3% NaCl and 0.5% NaCl) in a hydroponic system in a phytotron.Results showed that under NaCl stress,water losing of mesophyll cells resulted in leaf carnification degree reduced and the ability of leaf storing water declined.Furthermore,because of leaf losing water,stoma opening degree became small.The leaf water-holding ability of the three provenances of C.paliurus seedlings was in the order of Huangshan of Anhui Province,Kunming of Yunnan Province,Jiujiang of Jiangxi Province.Overall,the salt-tolerance of the three provenances was also the order of Huangshan of Anhui Province,Kunming of Yunnan Province,Jiujiang of Jiangxi Province,which could provide some references for the silviculture of C.paliurus plantations.