Article Sidebar
Main Article Content
Abstract
Salinity is one of the main plant abiotic stresses affecting the establishment and development of crops. It is thus a matter of prime importance to search for technologies that minimize the damage caused by salinity. The aim of the present work was to evaluate the effect of salinity stress and osmotic conditioning of seeds on the biomass, gas exchanges and chlorophyll pigments in Mesosphaerum suaveolens (L.) Kuntze. The statistical design adopted was a randomized block design, combined according to the central composite design, referring to electrical conductivities of irrigation water and osmotic potentials, with minimum (–α) and maximum (α) values of 0.5 and 10.0 dS m–1 and 0.0 and –1.0 MPa, respectively, totaling nine combinations. The characteristics of dry biomass, gas exchange and chlorophyll indices were evaluated at 45 days after the beginning of irrigation with saline water. The salinity of irrigation water severely affected the dry biomass and the gas exchanges of M. suaveolens. Irrigation water of electrical conductivity above 3.2 dS m–1 caused reductions in chlorophyll a, b and total contents in M. suaveolens plants. Seed osmoconditioning did not attenuate the negative effects of saline stress on M. suaveolens plants.
Keywords
Article Details
Copyright (c) 2021 Francisco Romário Andrade Figueiredo, Jackson Silva Nóbrega, Reynaldo Teodoro de Fátima, Toshik Yarley da Silva, Rodrigo Garcia da Silva Nascimento, Maria de Fátima Queiroz Lopes, Thiago Jardelino Dias, Riselane de Lucena Alcântara Bruno
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Acta Botanica Croatica is an Open Access journal with minimal restrictions regarding content reuse. Immediately after publishing, all content becomes freely available to anyone for unlimited use and distribution, under the sole condition that the author(s) and the original source are properly attributed according to the Creative Commons Attribution 4.0 International License (CC BY 4.0).
CC BY 4.0 represents the highest level of Open Access, which maximizes dissemination of scholarly work and protects the rights of its authors. In Acta Botanica Croatica, authors hold the copyright of their work and retain unrestricted publishing rights.
By approving final Proof the authors grant to the publisher exclusive license to publish their article in print and on-line, in accordance with the Creative Commons Attribution (CC-BY-4.0) license.