Effect of salinity on the vegetative characteristics, biomass and chemical content of red mangrove seedlings in the south of Iran

IF 0.5 4区农林科学 Q4 FORESTRY

Scientia Forestalis Pub Date : 2021-12-01 DOI:10.18671/scifor.v49n132.16

M. Moslehi, T. Pypker, Asghar Bijani, A. Ahmadi, Mohammad Hossien Sadeghzade Hallaj

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引用次数: 1

Abstract

We selected six months old seedlings of Rhizophora mucronata (Lam.) to evaluate the effect of different salinity on seedling growth, biomass and ion content in roots and leaves. We planted red mangrove propagules in plastic pots and irrigated them with freshwater (control), low salinity (EC: 8500 μm.cm; 25% sea water+75% freshwater), moderate salinity (EC: 29000 μm.cm; 50% sea water+50% freshwater) and high salinity (EC: 57000 μm.cm; 100% sea water) for six months. Seedling grown at moderate salinity, had higher leaf number, collar diameter, height, root length, root dry weight, total dry mass weight and leaf area relative to seedlings grown at lower or higher concentrations. Concentrations of sodium and chloride ions in both leaves and roots increased with increasing salinity. Calcium, potassium and nitrogen in both leaves and roots were highest in the moderate treatment, followed by control, low salinity and high salinity treatments. All ions were higher in leaves, except for calcium, which was higher in roots. It can be concluded that the moderate salinity levels as it balances seedling quality with reduced demand for freshwater.

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盐度对伊朗南部红树幼苗营养特性、生物量和化学成分的影响

以6个月龄的毛根hora mulronata (Lam.)幼苗为研究对象，研究了不同盐度对其幼苗生长、根系和叶片生物量及离子含量的影响。将红红树繁殖体种植在塑料盆中，用低盐度淡水(EC: 8500 μm.cm)灌溉;25%海水+75%淡水)，中等盐度(EC: 29000 μm.cm;50%海水+50%淡水)和高盐度(EC: 57000 μm.cm;100%海水)六个月。在中等盐度条件下生长的幼苗叶片数、领径、高、根长、根干重、总干质量和叶面积均高于低或高盐度条件下生长的幼苗。叶片和根中钠离子和氯离子浓度随盐度的增加而增加。叶片和根系中钙、钾、氮含量均以中度处理最高，其次为对照、低盐和高盐处理。除钙离子在根中含量较高外，其余离子在叶片中含量均较高。因此，适度的盐度水平可以平衡幼苗质量和减少对淡水的需求。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Scientia Forestalis Agricultural and Biological Sciences-Forestry

CiteScore

1.00

自引率

0.00%

发文量

期刊介绍： Scientia Forestalis is a scientific publication of the IPEF – Institute of Forest Research and Studies, founded in 1968, as a nonprofit institution, in agreement with the LCF – Department of Forest Sciences of the ESALQ – Luiz de Queiroz College of Agriculture of the USP – São Paulo University. Scientia Forestalis, affiliated to the ABEC – Brazilian Association of Scientific Publishers, publishes four issues per year of original papers related to the several fields of the Forest Sciences. The Editorial Board is composed by the Editor, the Scientific Editors (evaluating the manuscript), and the Associated Editors (helping on the decision of acceptation or not of the manuscript, analyzed by the Peer-Reviewers.