Condicionamento osmótico de sementes de Sesbania virgata (CAV.) PERS (Fabaceae)

Masetto, Tathiana Elisa; Faria, José Márcio Rocha; Fraiz, Ana Carla Resende; Rezende, Rodrigo Kelson Silva

doi:10.1590/s0104-77602013000400013

Cited by 11 publications

(11 citation statements)

References 18 publications

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“…Similar results were also found in E. stipitata, for which osmoconditioning increased germination velocity (Silva et al, 2016a). In S. virgata seeds, there was also an increase in the germination and GVI after seeds were osmoconditioned (Masetto et al, 2013).…”

Section: Discussionsupporting

confidence: 82%

“…In forest species, osmoconditioning of seeds has been reported in different studies with several species and focused on the optimization of the physiological potential. Increases in germination, emergence and/or seedling quality were observed with osmoconditioning in Bauhinia forficata (Duarte & Nunes, 2010), Myracrodruon urundeuva (Cardoso et al, 2012;Virgens et al, 2012), Sesbania virgata (Masetto et al, 2013), Bixa orellana (Kissmann et al, 2013), Anadenanthera falcata (Mota et al, 2013), Stryphnodendron polyphyllum, S. adstringens (Scalon et al, 2014), Citrus volkameriana (Oliveira et al, 2014) and Eugenia stipitata (Silva et al, 2016a). These findings evidence the benefits of osmoconditioning and data obtained for the abovementioned species can aid the large-scale propagation aimed to supply seedlings with high quality for environmental restoration programs.…”

Section: Introductionmentioning

confidence: 99%

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Seeds of Peltophorum dubium submitted to osmotic conditioning increases germination and vigor

Missio¹,

Nunes

Saldanha³

et al. 2018

Pesq. flor. bras.

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Peltophorum dubium (Spreng.) Taub. é uma espécie florestal nativa do Brasil utilizada em programas de restauração ambiental, paisagismo e construção civil. Sua propagação ocorre de forma seminal, porém, problemas na qualidade fisiológica das sementes aliados a ação de fatores bióticos e abióticos podem reduzir os percentuais de germinação e emergência. Neste contexto, técnicas que permitam a expressão do potencial fisiológico das sementes podem melhorar a germinação e o vigor em menor espaço de tempo. Uma destas técnicas é o condicionamento osmótico das sementes, o qual visa proporcionar a germinação mais rápida e uniforme, especialmente sob condições de estresse. O objetivo deste trabalho foi estudar se o condicionamento osmótico aumenta a germinação e o vigor de sementes de P. dubium. O estudo constituiu-se de três etapas: I – seleção do potencial osmótico ideal para a embebição; II - vigor e germinação de sementes osmocondicionadas e com diferentes teores de água; III - osmocondicionamento de quatro lotes de sementes com diferenças no vigor. A solução de PEG 6000 com -0,6 MPa é recomendada para o condicionamento osmótico de sementes de P. dubium com o objetivo de melhorar a germinação e o vigor. Sementes com teor de água próximo a 10% para o condicionamento osmótico influenciam positivamente o vigor. O condicionamento osmótico pode melhorar os aspectos fisiológicos de sementes de P. dubium com boa qualidade fisiológica, podendo reduzir o tempo de germinação e emergência e favorecendo os talhões com maior uniformidade e menor probabilidade de influência dos fatores bióticos e abióticos.

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Section: Discussionsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Seeds of Peltophorum dubium submitted to osmotic conditioning increases germination and vigor

Missio¹,

Nunes

Saldanha³

et al. 2018

Pesq. flor. bras.

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“…Priming or physiological conditioning is based on the controlled hydration of the seeds, so that pregermination metabolic process begins without radicle protrusion (Heydecker et al, 1975). Among the improvements achieved through priming, can be mentioned the increase in germination percentage, germination speed, length and seedling dry mass, as well as the increase in the ability of seeds to withstand stress during germination (Arif et al, 2010;Arif et al, 2014;Dezfuli et al, 2008;Khalil et al, 2001;Masetto et al, 2013;Oliveira and Gomes Filho, 2010;Pereira et al, 2008;Sediyama et al, 2012;Yasari, et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Methods for priming maize seeds

et al. 2016

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-This study aimed to evaluated different methodologies and water potentials for priming of maize seeds, in order to increase vigor. The experiment was carried out following a completely randomized design, in a factorial scheme 4x3+1, with four water potentials (0.0, -0.4, -0.8 and -1.2 MPa), three priming methods (immersion in non-aerated solution, immersion in aerated solution, paper roll) and a control. After priming, the seeds were dried and evaluated for water content, percentage and first germination count, seedlings length and dry mass, cold test and vigor index. The water potential recommended for priming maize seeds, in polyethylene glycol 6000 is -0.4 MPa for 24 hours. The priming procedures in towel paper rolls improve the quality of maize seeds.Index terms: osmo-priming, polyethylene glycol, vigor, Zea mays L.Métodos para o condicionamento fisiológico de sementes de milho RESUMO -Objetivou-se avaliar diferentes metodologias e potenciais hídricos para o condicionamento fisiológico de sementes de milho, visando o aumento no vigor. O experimento foi realizado em delineamento inteiramente casualizado, esquema fatorial diferenciado 4x3+1, com quatro potenciais hídricos (0,0, -0,4, -0,8 e -1,2 MPa), três métodos de condicionamento (imersão em solução não aerada, imersão em solução aerada e rolo de papel) mais a testemunha. Após o condicionamento fisiológico as sementes foram secas e avaliadas quanto ao teor de água, porcentagem e primeira contagem da germinação, comprimento e massa seca das plântulas, teste de frio e índice de vigor. O potencial hídrico recomendado para o condicionamento fisiológico de sementes de milho, em polietilenoglicol 6000 é de -0,4 MPa por 24 horas. O condicionamento em rolo de papel 'germitest' eleva a qualidade de sementes de milho.Termos para indexação: osmocondicionamento, polietilenoglicol, vigor, Zea mays L.

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“…In studies performed by Masetto et al (2013) and Bittencourt et al (2004) with Sesbania virgate (Cav.) Pers and Asparagus officinalis L. using solutions of PEG, it was also possible to obtain positive effects of priming on germination of seeds of these species.…”

Section: Resultsmentioning

confidence: 99%

DORMANCY OVERCOMING AND PRECONDITIONING IN Mimosa caesalpiniifolia Benth. SEEDS

et al. 2020

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Seeds of ‘sabiá’ (Mimosa caesalpiniifolia Benth.) have coat dormancy, which hampers the absorption of water and oxygen, thereby delaying germination. Thus, this study aimed to evaluate methods for overcoming dormancy associated with priming on germination and vigor of seeds of ‘sabiá’, considering the efficiency, practicality and cost of treatment. The experimental design was completely randomized, in a 4 x 5 factorial scheme (four methods for overcoming dormancy x five types of priming), constituting 20 treatments with four replicates of 25 seeds. The methods for overcoming dormancy used were tip removal, seed immersion in hot water at 100 °C for three minutes, immersion in sulfuric acid for 10 minutes and intact seeds. For the determination of physiological conditioning of seeds, the imbibition curve with the different priming agents was constructed. Priming was done on filter paper moistened with solutions of mannitol at the potentials of -0.2 MPa (16 hours), -0.4 MPa (24 hours) and -0.6 MPa (36 hours) and only with distilled water for the hydropriming (12 hours) and seeds without priming. The variables analyzed were first count of germination, germination, root length, shoot length and dry weight of seedlings. The data were subjected to analysis of variance by F test and Tukey test at 5% probability. The dormancy of M. caesalpiniifolia seeds should be overcome with the use of hot water (100 °C) for three minutes, without the need for priming.

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Condicionamento osmótico de sementes de Sesbania virgata (CAV.) PERS (Fabaceae)

Abstract: OSMOPRIMING ON Sesbania virgata (CAV.) PERS (FABACEAE) SEEDS potentials-0.2; -0.4; -0.6 and -0.8

Cited by 11 publications

References 18 publications

Seeds of Peltophorum dubium submitted to osmotic conditioning increases germination and vigor

Seeds of Peltophorum dubium submitted to osmotic conditioning increases germination and vigor

Methods for priming maize seeds

DORMANCY OVERCOMING AND PRECONDITIONING IN Mimosa caesalpiniifolia Benth. SEEDS

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