Table of Contents
ISRN Agronomy
Volume 2013, Article ID 592820, 8 pages
http://dx.doi.org/10.1155/2013/592820
Research Article

Screening for Salt Tolerance in Eight Halophyte Species from Yellow River Delta at the Two Initial Growth Stages

1College of Architecture and Urban Planning, Hunan University of Science and Technology, Xiangtan 411201, China
2College of Geography and Planning, Ludong University, Yantai 264025, China
3Department of Geography, Linyi University, Linyi 264000, China
4College of Life Science, Hunan University of Science and Technology, Xiangtan 411201, China

Received 29 May 2013; Accepted 17 June 2013

Academic Editors: N. Hulugalle, C. H. Kao, and M. Zhou

Copyright © 2013 Liu Xianzhao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Screening of available local halophytes for salinity tolerance is of considerable economic value for the utilization of heavy salt-affected lands in coastal tidal-flat areas and other saline areas. In this study, the germination and seedling pot experiments on salt tolerance of eight halophytic species from Yellow River Delta, China, at seven NaCl concentrations (0, 50, 100, 150, 200, 250, and 300 mM), were conducted at both growth stages. Results showed that germination rate and germination index decreased with an increase in NaCl concentration. The higher germination rates were obtained from Tamarix chinensis and Suaeda salsa seeds exposed to 0~200 mM NaCl. At the seedling stage, the salt tolerances of eight halophytes were also different from each other. Tamarix chinensis had significantly greater fresh biomass and plant height in relative terms than the others in all salt treatments. The order of the relative growth yield in seedling was Tamarix chinensis > Suaeda salsa > Salicornia europaea > Limonium bicolor > Atriplex isatidea > Apocynum venetum > Phragmites australis > Sesbania cannabina. The comprehensive analysis showed that Tamarix chinensis had the highest tolerance to salt, followed by Suaeda salsa, and the salt tolerance of Sesbania cannabina was the lowest.