Evaluation of salt spray tolerance of 9 coastal plants
In order to improve the quality of garden greening in coastal areas,9 kinds of seashore plants,including Rhaphiolepis umbellata,Dodonaea viscosa,Derris trifoliata,Myoporum bontioides,Machilus obovatifolia,Vitex trifolia var.simplicifoli,Antidesma japonicum,Tournefortia argentea,Clerodendrum inerme seedlings,were selected as test materials.Using saturated NaCl solution to spray on the leaf surface,and then observing the species salt fog suffer symptoms,and through the determination of leaf water content,chlorophyll content,superoxide dismutase activity(SOD)and malondialdehyde(MDA)content and physiological indexes to comprehensively evaluate salt fog resistance of 9 species.Results showed the treated plants were damaged in varied degrees,leaves were lack of green and become yellow or brown,dried-up and wilting,and dehydration etc.Under salt treatment,compared with CK,leaf water content and chlorophyll content of 9 species were significantly decreased,MDA content increased.In the treated group,SOD of D.trifoliata showed a downward trend with time lengthening,D.viscosa and T.argentea increased at the first and then dropped,the other six species showed a increase trend with the treatment time.According to the comprehensive evaluation,R.umbellata,A.japonicum,M.obovatifolia present strong tolerance to salt treatment,M.bontioides,D.viscosa,V.trifolia var.simplicifoli presents midium tolerance,and C.inerme,T.argentea,D.trifoliata presents weak ability.
国家科技期刊平台
NSTL
万方数据
维普
