Araticum Accessions: Effect of Gibberellic Acid Concentrations and Soaking Times on Seed Dormancy Overcoming1

Abstract

The germination process of the Annona sylvatica A.St.-Hil becomes difficult because the seeds have physical and physiological numbness. Although, the objective was to evaluate the effect the gibberellic acid can have in overcoming this physiological process. So that, aimed to evaluate the effect of the gibberellic acid in the overcoming dormancy of araticum seeds. Two different projects were developed simultaneously (plants germination in the laboratory and emergence of seedlings in seed). At the laboratory, the experimental design used was completely casualized in factorial scheme 4 x 4. Evaluating the physiological aspect of the germination and vigor. The germination of the seeds presented superior performance when they were immersed in 1200 mg.L-1 of GA3, in 24 h of imbibition, reaching 67% of germination. In the emergence of seedlings in seed, the experimental design used was to randomize blocks in factorial scheme 4 x 5 (four accesses x five periods of immersion). After 110 days, evaluating physiological aspects of emergence and vigor. The emergence varied between 32 to 45% (accesses A1 and A3) in a period of 15 to 24 h (accesses A1 and A3 or A4). High concentration and longer period of soaking in gibberellic acid promote a bigger germination of the araticum seeds. There is a difference between the accesses of the species, necessary to evaluate before being collected, and in the present study the accesses A3 is promising for harvest.

Scientific Advances in the Last Decade on the Recovery, Characterization, and Functionality of Bioactive Compounds from the Araticum Fruit (Annona crassiflora Mart.)

“…Obtaining the fruits for commercial purposes has been done in an extractive manner from native populations, in areas of the Brazilian Cerrado, due to the absence of commercial plantations. Therefore, araticum plants present high genetic diversity since they come from seeds that have not yet undergone genetic improvements, thus resulting in highly different individuals [ 3 ]. Moreover, several factors can affect the genetic diversity of this species, including climatic conditions (e.g., temperature), geographical location, and landscape where the matrix is located (e.g., percentage of forestry cover, water, and urban areas) [ 4 , 5 ].…”

Dormancy overcoming in seeds of Myrciaria glomerata O. Berg.

“…Responses regarding GA3 vary according to the species. According to Silva et al (2019), seeds of Annona sylvatica A.St.-Hil pre-imbibed for 24 h with 1,200 mg L -1 of GA3 showed higher GSI. For Psidium guajava L., the use 0.1% GA3 contributes to germination and normal seedlings (HOSSEINI et al, 2020).…”

Estudos em Biologia: do ensino à pesquisa

“…Sua formação é datada do Quaternário, com comunidades vegetais desenvolvendo-se por toda planície costeira desde então (Scarano, 2002;Zickel et al, 2004;Almeida Jr., 2015). A composição vegetal varia conforme as diferenças geográficas, influenciada pela presença de ecossistemas adjacentes (Scarano, 2002;Britez, 2005;Almeida Jr. et al, 2009;Belfort et al, 2021;Silva et al, 2021).…”

“…Essas propriedades refletem a interação da espécie com seu ambiente, onde a disponibilidade de nutrientes e água afeta diretamente suas características físicas, sublinhando a necessidade de práticas de manejo florestal sustentáveis (Da Silva et al, 2021). A compreensão dessas características é vital para a conservação da espécie e para práticas de manejo que assegurem a sustentabilidade da madeira da espécie.…”

“…Apesar de sua densidade sugerir uma potencial dificuldade de manejo, a madeira da espécie é surpreendentemente maleável, facilitando o corte, a moldagem e o acabamento. Este equilíbrio entre resistência e trabalhabilidade a torna uma escolha preferencial para artesãos e na fabricação de peças de alto valor estético e funcional (Da Silva et al, 2021;Moreira et al, 2023). DOI: http://www.doi.org/10.52832/wed.63| Wissen Editora, 2024…”