Resumo

RAMIREZ, Maribel; CARABALLO, Brigida; URDANETA, Aly  e  GARCIA, D. E. Emergence and initial development of four forage tree legumes present on the plateau of Maracaibo, Venezuela. Pastos y Forrajes [online]. 2013, vol.36, n.3, pp. 303-312. ISSN 0864-0394.

The objective of the study was to evaluate the effect of different pre-germination treatments, as well as the morphological characteristics of the emerged seedlings in four forage tree legumes: Albizia lebbeck, Prosopis juliflora, Samanea saman and Enterolobium cyclocarpum, present on the plateau of Maracaibo, Zulia state, Venezuela. A randomized block experimental design, with four repetitions, was used. The applied treatments were: scarification with sandpaper (SS), soaking in water (SW) and immersion in hot water (IHW), in seeds with different storage times (ST). The following factors were evaluated: emergence percentage (EP), emergence rate (ER), seedling height (SH), root length (RL), number of leaves (NL), number of nodes (NN) and stem diameter (SD). In A. lebbeck the time of SW and the interaction between SS and IHW showed significant differences in the EP. In the P. juliflora seeds, the individual effects of ST, SW and IHW showed differences in the EP. The SS influenced the EP of the P. juliflora seeds without endocarp and those of E. cyclocarpum and S. saman. It is concluded that the SS in seeds of A. lebbeck, P. juliflora without endocarp, E. cyclocarpum and S. saman; as well as the utilization of P. juliflora seeds with endocarp fresh or stored during three months and treated with hot water for five minutes allowed to increase emergence. The seedlings showed normal and homogeneous development.

Palavras-chave : Albizia lebbeck; emergence; Enterolobium cyclocarpum; Prosopis juliflora; Samanea saman.

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