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标题：RESPONSE OF SPECKLED SPUR-FLOWER TO SALINITY STRESS AND SALICYLIC ACID TREATMENT
本地全文：下载
作者：Piotr Salachna ; Rafał Piechocki ; Agnieszka Zawadzińska 等
期刊名称：Inżynieria Ekologiczna
印刷版ISSN：2081-139X
电子版ISSN：2392-0629
出版年度：2015
卷号：16
页码：68-75
DOI：10.12911/22998993/60456
出版社：Polish Society of Ecological Engineering (PTIE)
摘要：One of the limitations to using ornamental plants in green areas is too high salinity and alkalization of the soil.The adverse effect of salinity on plant growth and development may be effectively reduced by application of salicylic acid.Plectranthus ciliatus is an attractive bed plant with ornamental leaves, recommended for growing in containers, hanging baskets, or sunny borders.The aim of this study was to investigate the response of P.ciliatus to salicylic acid and calcium chloride.The plants were grown in pots in a glasshouse and were sprayed with solution of 0.5 mM salicylic acid and watered with 200 mM calcium chloride.The application of salicylic acid resulted in an increased weight of the aboveground parts, higher stomatal conductance and leaf greenness index and enhanced leaf content of nitrogen, potassium, iron and zinc.Salinity-exposed plants were characterized by reduced weight, stomatal conductance and leaf greenness index.Salt stress caused also a drop in leaf content of nitrogen, potassium and iron, and an increase in calcium, sodium, chlorine, copper and manganese concentration.Salicylic acid seemed to relieve salinity-mediated plant stress.
关键词：Plectranthus ciliatus ; ion concentration ; purple-leaved plectranthus ; salinity stress