Data/hora: 10/06/2024 03:38:27

Provedor de dados: | 65
País: | Brazil
Título: | Potential production of Aspidosperma cylindrocarpon seedlings viarescue seedlings
Autores: | Silva,Nathália Ferreira e; Pereira,Israel Marinho; Silva,Michele Aparecida Pereira da; Titon,Miranda; Oliveira,Marcio Leles Romarco de; Araújo,Luana Cristielle; Carlos,Leandro.
Data: | 2017-01-01
Ano: | 2017
Palavras-chave: | Peroba; Leaf reduction; Height class.
Resumo: | ABSTRACT: Translocation of rare populations is regarded as the last resort for the conservation of species whose habitat destruction is imminent. The objective of the present study was to evaluate the effect of two height classes and three leaf reduction intensities on growth and increases in height, stem diameter, survival, and new leaf production in seedlings of Aspidosperma cylindrocarpon (peroba) obtained via rescue seedlings in a remnant of tropical semi deciduous forest. We recovered 240 individuals that were divided into two height classes (Class I-5 to 15cm and Class II-20 to 35cm) and subjected to three leaf reduction intensities (0%, 50%, and 100%), which were then transported to a shade house with 50% light reduction. Measurements of height, stem diameter, and new leaf production were collected 8 times at 0, 15, 60, 75, 90, 105, 120, and 135 days, and survival rate was measured at day 135. The average survival rate was 82.9%; 77.5% for one Class I (5-15cm) and 88.3% for Class II (20-35cm). Higher seedling growth was observed for the 0% leaf reduction treatment in both height classes. The leaves insertion were greater in the 100% cuts, with a decrease observed over time. It is advisable to restore A. cylindrocarpon seedlings in two height classes owing to the high survival rate, leaf appearance, and growth reported in the present study. The no-leaf reduction treatment (0%) is the most viable alternative for the production of A. cylindrocarpon seedlings, via rescue seedlings.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500402
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/0103-8478cr20141019
Formato: | text/html
Fonte: | Ciência Rural  v.47 n.5 2017
Fonte: | info:eu-repo/semantics/openAccess