Osmopriming duration in Araçá-boi seeds germination

Abstract

Abstract:The Araca-boi is a native fruit of the Amazon region and its fruits have great potential for agro-industrial use due to the intrinsic characteristics of the pulp. The seeds are dormant and the primary cause could be due to the presence of inhibiting chemicals germination and can also be caused by the impermeability in tegument. The objective of this study was to assess the osmopriming efficiency promoted by Sucrose (C 12 H 22 O 11 ) and Potassium Nitrate (KNO 3 ) on germination of seeds of araca-boi in different immersion times. Thus, the seeds were osmoconditioned in following solutions: C 12 H 22 O 11 , KNO 3 , KNO 3 + C 12 H 22 O 11 and H 2 O, by period of 6, 12 and 24 h. Throughout of 70 days were evaluated the germination percentage and germination rate (index). The experiment is based on a completely randomized in a factorial analysis 4x3 with four replications of 10 seeds. The osmopriming of Araca-boi seed in KNO 3 solution was shown to be efficient both to promote germination and the germination rate. The Araca-boi seeds osmoconditioned in KNO 3 solution has an average efficiency of 99% in the germination percentage up to 70 days. The osmopriming period showed no influence on seed germination of the seeds of Araca-boi.Resumo: O araçá-boi é uma frutífera nativa da região Amazônica e seus frutos apresentam grande potencial de aproveitamento agroindustrial devido às características intrínsecas de sua polpa. Suas sementes são dormentes e a principal causa pode ser devido à presença de substâncias químicas inibidoras da germinação e também pode ser causada pela impermeabilidade do tegumento. Neste contexto, o objetivo neste trabalho foi avaliar a eficiência do osmocondicionamento promovido por Sacarose (C 12 H 22 O 11 ) e Nitrato de Potássio (KNO 3 ) na germinação de sementes de araçá-boi, em diferentes tempos de imersão. Para tal, as sementes foram osmocondicionadas em soluções de C 12 H 22 O 11 , KNO 3 , KNO 3 ,+ C 12 H 22 O 11 e H 2 O, por períodos de 6, 12 e 24 h. Foram avaliadas no período de 70 dias, a porcentagem de germinação e a velocidade de germinação (índice). O delineamento utilizado foi o inteiramente casualizado em fatorial 4x3, com 4 repetições de 10 sementes. O osmocondicionamento de sementes de araçá-boi em solução de KNO 3 é eficiente para promover a germinação e a velocidade de germinação. Sementes de araçá-boi osmocondicionadas em KNO 3 apresentam porcentagem de germinação de 99% até os 70 dias. O período de osmocondicionamento não influencia na germinação das sementes de araçá-boi.Palavras-chave: Eugenia stipitata. Dormência. Priming.

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

“…These findings corroborate with the literature, in which it is mentioned that the efficiency of the physiological conditioning allows a greater expression of the physiological potential of the seeds through uniformity of the vigor of different lots, fact that was ascribed to the controlled hydration process of the seeds, in which phases I and II of the germination process occur (Marcos Filho, 2005). 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).…”

“…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.…”

Priming Em Sementes: Uma Revisão Bibliográfica Concisa E Atualizada

“…A utilização de sacarose como soluto em condições de hydropriming é denominada de Osmopriming e promove basicamente o aumento energético em relação aos processos bioquímicos inerentes as sementes em relação a germinação, mobilização de substâncias de reserva (BATISTA et al, 2016;SILVA et al, 2016;BATISTA et al, 2018;ANTUNES et al, 2020;CARVALHO et al, 2020). Tal uso foi recomendado para sementes de Urochloa brizantha (BATISTA et al, 2016;BATISTA et al, 2018), Eugenia stipitate (SILVA et al, 2016), Pinus nigra (CARVALHO et al, 2020) e Caesalpinia pyramilis (ANTUNES et al, 2020).…”

Do storage of Eugenia stipitata seeds affect their germination and efficacy of the tetrazolium viability test?

“…Originally from the Peruvian Amazon and western region of the Brazilian Amazon, Eugenia stipitata (araçá-boi) is a fruit species that in Peru, Bolivia, Ecuador, Colombia and Brazil is generally cultivated on a small scale (Moura et al, 2016), and serves as an alternative income for the local population of the northern Amazon, whether by marketing the fruit or the production of seeds and/or seedlings (Silva et al, 2016).…”