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Morphology and germination of Acmella oleracea L. R. Jansen under different temperatures and photoperiods Rev. Ciênc. Agron.
Sarmento,Erivanessa Costa Sousa; Pereira,Kleane Targino Oliveira; Oliveira,Fernando Sarmento de; Leal,Caio César Pereira; Torres,Salvador Barros; Dutra,Alek Sandro.
ABSTRACT The objective was to evaluate the physical characteristics and physiological behavior of A. oleracea seeds during imbibition and germination, under different temperatures and photoperiods, as well as to determine the duration of the germination test. For this, biometric parameters (length, width and thickness) were measured in 100 seeds and thousand-seed weight was determined. In addition, the external structures of seeds and seedlings were described and the imbibition curve was monitored. Subsequently, the germination test was conducted at temperatures of 20, 25, 30, 35, 20-30 and 25-35 ºC, under constant and alternating light and dark photoperiods (12 h), arranged in 6 x 3 factorial scheme, with four replicates of 50 seeds. Seeds were sown in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Jambu; Imbibition; Seed morphology; Seed analysis.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000400660
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Physiological potential of sorghum seeds under discontinuous hydration and water deficiency conditions Rev. Ciênc. Agron.
Sarmento,Erivanessa Costa Sousa; Oliveira,Fernando Sarmento de; Cabral,Felipe Augusto Sombra; Oliveira,Daniel Farias; Dutra,Alek Sandro.
ABSTRACT Hydration and dehydration cycles during imbibition of seeds may influence their physiological performance, making them more vigorous and resistant to abiotic factors such as water stress. The aim was to investigate whether the times and discontinued hydration cycles condition higher tolerance to water deficiency conditions in germination and seed vigor and accumulation of organic compounds in sorghum seedlings. The experiment was carried out in a randomized experimental design with four replicates of 50 seeds. The treatments were arranged in a 3 × 4 × 6 factorial scheme (hydration times, hydration and dehydration cycles, osmotic potentials). The imbibition curve of the species was determined based on three times (X, Y and Z); and the dehydration...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Germination; Sorghum Bicolor; Water Memory; Water Stress; Vigor.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000400411
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