Studying the salinity stress on physical and growth characteristics of cupressus sempervirens — JBES

M.Zamani, M. H Hakimi, A. Mosleh Arany, B. Kiani, A. Rashtian

Faculty of Natural resources, Yazd University, Iran

Key words: Salinity stress, Cupressus sempervirens, Salicylic acid, Sodium nitroproside.

Abstract

This study investigated the effects of some physiological and growth characteristics under salinity conditions. For this aim, the factorial experiment was randomly designed in three replicates and different salinity treatments (0, 5, 10, 20 ds/m) with and without Sodium nitroproside (SNP) and salicylic acid (SA). Results showed the amount of proline significantly increased in dose 20 ds/m. Applying SA increased the amount of proline three times more than control in dose 20 ds/m.

Proline in roots increased in dose 20 ds/m salinity and using these two substances on proline content in roots showed applying SA didn’t increase the amount of sugar in dose 20 ds/m. Sugar in leaves increased with increasing salinity dose 10 and 20 ds/m and applying SA in dose 10 and 20 ds/m and SNP in dose 5 ds/m increased the amount of sugar. Increasing salinity did not change root length and carotenoids, however; leaf Na increased in dose 20 ds/m with increasing salinity and decreased K in dose 10 and 20 ds/m. Increasing salinity did not change the amount of chlorophyll and it caused to decrease wet weight of roots and stems and also using SA decreased dry weight of stems.

Get the original articles in Source: Volume 5, Number 1, July 2014 — JBES

Journal Name: Journal of Biodiversity and Environmental Sciences (JBES)

Published By: International Network for Natural Sciences

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