SciELO - Scientific Electronic Library Online

 
vol.40 issue4Lettuce seeds quality evaluated by accelerated aging test author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

  • Have no similar articlesSimilars in SciELO

Share


Revista de Ciências Agrárias

Print version ISSN 0871-018X

Abstract

XAVIER, Fernanda da Motta et al. Germination of Allium cepa L. seeds subjected to physiological conditioning and drying. Rev. de Ciências Agrárias [online]. 2017, vol.40, n.4, pp.1-10. ISSN 0871-018X.  https://doi.org/10.19084/RCA17086.

The objective was to evaluate the effects of physiological conditioning and subsequent drying at room temperature on germination and vigour of onion seeds. Two seed lots were used and the seeds of each batch were submitted to the conditioning in water and osmotic solution of polyethylene glycol (PEG 6000), evaluating five levels of osmotic potential - 0,0 MPa [water], -0,2 MPa, -0,4 MPa, -0,6 MPa, and -0,8 MPa - and four conditioning periods - zero, 36, 48 and 60 h. After this procedure, the seeds were submitted to drying at room temperature for seven days, on paper towel. The physiological quality of the seeds was evaluated through the following tests: moisture, germination, first germination count, germination time, emergence, emergence days, seedling length and plant length in soil. The results showed that the conditioning followed by drying, up to 10 h of conditioning at osmotic potential levels from 0 to -0,2 MPa favours seed vigour. The 60 h period at the zero level of osmotic potential (water) promotes benefits for first counting of germination and seedling length. Hydro-conditioning was the most effective treatment for onion seeds.

Keywords : hydro-conditioning; onion; polyethylene glycol; seed vigour.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License