Effect of Pre-treatments on Seed Germination and Seedling Growth in Psidium guineense Swartz

This work aimed to evaluate the effect of pre-treatments with gibberellin, the initial substrate humidity, and incubation temperature on the germination of Psidium guineense Swartz seeds. The seeds were submitted to four pre-treatments with gibberellin (GA3) (50 and 100 mg L-1) and distilled water during 24 hours, and control. Sowing was carried out on Germitest® paper that was moistened with distilled water at humidity levels corresponding to 1.5 and 2.5 times the weight of dry paper. The seeds were then incubated at a constant temperature (25 or 30 ºC) and alternate temperatures (20-30 ºC). Experiments were randomized, with a factorial scheme 4 × 2 × 3 (pre-treatment × initial substrate humidity × temperature) with four replicates of 25 seeds each. Germination rate and seedling growth of P. guineense were not affected by pre-germination treatments. For an optimum germination rate and seedling growth, seeds of P. guineense should be sown at alternate temperatures of 20-30 ºC or 25 ºC and in substrate moisture of 1.5 or 2.5 times the dry paper mass.

Bibliographic Details

Main Authors:	Dresch,Daiane Mugnol, Scalon,Silvana de Paula Quintão, Neves,Eliane Marques da Silva, Masetto,Tathiana Elisa, Mussury,Rosilda Mara
Format:	Digital revista
Language:	English
Published:	Facultad de Agronomía - Instituto Nacional de Investigación Agropecuaria 2014
Online Access:	http://www.scielo.edu.uy/scielo.php?script=sci_arttext&pid=S2301-15482014000200004
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