Data/hora: 06/06/2024 17:58:08

Provedor de dados: | Acta Agronómica
País: | Colombia
Título: | Bíometry and pre-germínatíve treatments of seeds from an Amazon endemíc specíes
Autores: | Brito,Leomara Pessoa; Araújo Lacerda,José Dantas; Araújo Soares,Cintia; Monteiro Júnior,Franklin Luís Carlos; Souza,Magno Chagas; Aguiar Fonseca e Souza,Áurea Izabel; Lima,Clenes Cunha; Rodrigues,Marcos.
Data: | 2022-03-01
Ano: | 2022
Palavras-chave: | Conservation unit; Dormancy; Ipomoea cavalcantei; Mining; Scarification.
Resumo: | Abstract This study aimed to verify the impact of different methods of overcoming dormancy in the germination of Ipomoea cavalcantei seeds, in addition to surveying the biometric data of its seeds and fruits. Ripe fruits were randomly collected from the species' habitat, which is a unique ecosystem characterized by small vegetation and iron outcrops. For the biometric analyses, the weight, moisture content, length, width, and thickness of 100 fruits and 100 seeds were determined. To analyse the efficiency of overcoming seed dormancy, six different treatments were tested, including mechanical, physical, and chemical methods, and the resultant germinability, average germination time, and germination speed index were evaluated. Further, in order to estimate the imbibition curve, two treatments were selected to measure the water absorption rate of the seeds until the root emission of at least 50 % of the seeds. The results showed that the I. cavalcantei fruits and seeds biometrically vary in length, width, and thickness, which makes it difficult to obtain standard in situ samples. Moreover, mechanical scarification methods were the most efficient treatments to increase the efficiency of obtaining seedlings of this species. This study can contribute to ex situ conservation strategies for this endemic species, which is threatened by increasing mining activities.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122022000100081
Editor: | Universidad Nacional de Colombia
Relação: | 10.15446/acag.v71n1.99249
Formato: | text/html
Fonte: | Acta Agronómica  v.71 n.1 2022
Fonte: | info:eu-repo/semantics/openAccess