Morphological and physiological variation in Toona ciliata under water and salinity stress

The objective of this paper was to test the effects of water deficit, saturation and salinity in individuals of Toona ciliata. Seven treatments were tested: the control group, the complete suspension of irrigation, the permanent saturation of the pot soil and four doses of NaCl (50, 100, 200 and 400...

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Veröffentlicht in:Ciência rural 2020, Vol.50 (6)
Hauptverfasser: Andrade, Ramon Silveira de, Navroski, Marcio Carlos, Pereira, Mariane de Oliveira, Sá, Alexandra Cristina Schatz
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creator Andrade, Ramon Silveira de
Navroski, Marcio Carlos
Pereira, Mariane de Oliveira
Sá, Alexandra Cristina Schatz
description The objective of this paper was to test the effects of water deficit, saturation and salinity in individuals of Toona ciliata. Seven treatments were tested: the control group, the complete suspension of irrigation, the permanent saturation of the pot soil and four doses of NaCl (50, 100, 200 and 400 µmol). The experimental design was completely randomized, with 8 repetitions in each treatment. Physiologic evaluations were carried out during the experiment, and morphologic evaluations at the end. The plants were responsive to the applied stresses comparatively to the control group. Reductions were observed in morphological and physiological variables in all treatments under stress. All individuals under stress recovered slightly in the end of the experiment, and began to sprout again, representing a probable adaptation to the conditions. RESUMO: O trabalho teve como objetivo mensurar os efeitos de déficit hídrico, saturação e efeito da salinidade em mudas de Toona ciliata. Foram testados sete tratamentos: controle, suspensão completa de irrigação, saturação permanente do solo no vaso e quatro diferentes doses de NaCl (50, 100, 200 e 400 µmol). O delineamento experimental utilizado foi inteiramente casualizado, com oito repetições. Foram realizadas avaliações fisiológicas ao longo do experimento e ao final, avaliações morfológicas. As plantas foram responsivas aos estresses aplicados comparativamente ao controle. Havendo redução em variáveis morfológicas e fisiológicas em todos os tratamentos sobre estresse. Todos os indivíduos sob estresse tiveram uma pequena recuperação ao final do experimento, iniciando a rebrotar, representando uma possível adaptação ao estresse.
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Seven treatments were tested: the control group, the complete suspension of irrigation, the permanent saturation of the pot soil and four doses of NaCl (50, 100, 200 and 400 µmol). The experimental design was completely randomized, with 8 repetitions in each treatment. Physiologic evaluations were carried out during the experiment, and morphologic evaluations at the end. The plants were responsive to the applied stresses comparatively to the control group. Reductions were observed in morphological and physiological variables in all treatments under stress. All individuals under stress recovered slightly in the end of the experiment, and began to sprout again, representing a probable adaptation to the conditions. RESUMO: O trabalho teve como objetivo mensurar os efeitos de déficit hídrico, saturação e efeito da salinidade em mudas de Toona ciliata. Foram testados sete tratamentos: controle, suspensão completa de irrigação, saturação permanente do solo no vaso e quatro diferentes doses de NaCl (50, 100, 200 e 400 µmol). O delineamento experimental utilizado foi inteiramente casualizado, com oito repetições. Foram realizadas avaliações fisiológicas ao longo do experimento e ao final, avaliações morfológicas. As plantas foram responsivas aos estresses aplicados comparativamente ao controle. Havendo redução em variáveis morfológicas e fisiológicas em todos os tratamentos sobre estresse. 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All individuals under stress recovered slightly in the end of the experiment, and began to sprout again, representing a probable adaptation to the conditions. RESUMO: O trabalho teve como objetivo mensurar os efeitos de déficit hídrico, saturação e efeito da salinidade em mudas de Toona ciliata. Foram testados sete tratamentos: controle, suspensão completa de irrigação, saturação permanente do solo no vaso e quatro diferentes doses de NaCl (50, 100, 200 e 400 µmol). O delineamento experimental utilizado foi inteiramente casualizado, com oito repetições. Foram realizadas avaliações fisiológicas ao longo do experimento e ao final, avaliações morfológicas. As plantas foram responsivas aos estresses aplicados comparativamente ao controle. Havendo redução em variáveis morfológicas e fisiológicas em todos os tratamentos sobre estresse. 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subjects AGRONOMY
Design of experiments
déficit hídrico
Experimental design
Experiments
Floods
Irrigation
Photosynthesis
Physiology
Productivity
Respiration
salinidade
Salinity
Salinity effects
Saturation
saturação hídrica
Sodium chloride
Toona ciliata
Variance analysis
Water deficit
title Morphological and physiological variation in Toona ciliata under water and salinity stress
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