PRELIMINARY CONDITIONS FOR GERMINATION OF Trema micrantha (L.) Blume. SEEDS

Revista Brasileira de Engenharia Agrícola e Ambiental

Aguiar, Ivor Bergemann de¹  Castellani, Estela Dalpim² 

[1] Universidade Estadual Paulista, Jaboticabal, Brazil;Universidade Camilo Castelo Branco, Fernandópolis, Brazil

关键词:  forest seed;    maturation;    pulp removal;    substrate;    temperature;   

DOI  :  10.1590/1807-1929/agriambi.v2n1p80-83

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

Trema micrantha (Ulmaceae) is a common pioneer tree species in Brazil, much used in the São Paulo State for recovery of degraded areas. Preliminary conditions to favour the seed germination of T. micrantha were studied in this work. The fruits were harvested in Jaboticabal (SP) and separated into two maturation stages: of green colour and of green/red or red colours. The germination tests were carried out with fruits (fruits with pulp) and seeds (fruits without pulp), on sand and filter paper substrates, and under constant (25°C) and alternate (20-30°C) temperatures. An eight-hour photoperiod was used and the final percentage and the speed germination of the seeds were evaluated. It was found that the seeds didn't germinate at 25°C and the results obtained at 20-30°C showed that (a) seed germination wasn't affected by the tested substrates; (b) pulp removal favoured the seed germination; and (c) better physiological quality was obtained with seeds from green/red and red fruits.

【 授权许可】

Unknown