2017
DOI: 10.1590/1807-1929/agriambi.v21n5p333-338
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Germination and initial development of Simira gardneriana seedling under water stress and at different temperatures

Abstract: A B S T R A C TThe germination of seeds is affected by many factors, including water availability and temperature. This study aimed to evaluate the effects of water stress and different temperatures on germination and initial development of S. gardneriana M. R. Barbosa & Peixoto seedlings. The experiment was carried out in a completely randomized design, in a 7 x 4 factorial scheme, with seven potentials (0; -0.1; -0.2; -0.3; -0.4; -0.5 and -0.6 MPa) and four temperatures (25, 30, 35 and 20-30 °C), with four r… Show more

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Cited by 4 publications
(5 citation statements)
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“…The development stage of the S. gardneriana embryo must be the determining factor for the longest germination time. Temperatures of 25 and 30 °C are favorable for germination of S. gardneriana seeds, which have shown high seed viability (~90%) Oliveira et al, 2017;Oliveira et al, 2019). Paper roll or sand substrates are indicated for seed germination of this species .…”
Section: Resultsmentioning
confidence: 99%
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“…The development stage of the S. gardneriana embryo must be the determining factor for the longest germination time. Temperatures of 25 and 30 °C are favorable for germination of S. gardneriana seeds, which have shown high seed viability (~90%) Oliveira et al, 2017;Oliveira et al, 2019). Paper roll or sand substrates are indicated for seed germination of this species .…”
Section: Resultsmentioning
confidence: 99%
“…The evaluation of the hydration process of seeds was assessed as a function of time by three methods (immersion in water, on a wire mesh, and between paper rolls) and at two temperatures (25 and 30 °C). These temperatures are those indicated for germination of S. gardneriana seeds Oliveira et al, 2017;Oliveira et al, 2019).…”
Section: Methodsmentioning
confidence: 93%
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“…MPa. Oliveira et al (2017) avaliaram diferentes potenciais osmóticos (0; -0,1; -0,2; -0,3; -0,4; A água é requisito crucial para o início da germinação, uma vez que esse processo é ativado somente quando uma quantidade adequada de água é absorvida, possibilitando com isso a atividade metabólica. Em condições de redução do potencial hídrico, as sementes podem possuir água suficiente para iniciar o processo germinativo (Fases I e II) sem, contudo, ocorrer a protrusão da radícula e iniciar o crescimento da raiz primária (Fase III) (BEWLEY et al, 2013).…”
Section: Experimento I: Efeito Da Temperatura Na Germinação De Sementesunclassified