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Ciência e Agrotecnologia

versão impressa ISSN 1413-7054versão On-line ISSN 1981-1829

Resumo

RODRIGUES, Adriana Paula D'Agostini Contreiras; LAURA, Valdemir Antônio; CHERMOUTH, Katyuce da Silva  e  GADUM, Juliana. Osmopriming of parsley seeds (Petroselinum sativum Hoffm.) under different water potentials. Ciênc. agrotec. [online]. 2009, vol.33, n.5, pp.1288-1294. ISSN 1413-7054.  https://doi.org/10.1590/S1413-70542009000500013.

The germination of parsley seeds (Petroselinum sativum Hoffm.) is slow and asynchronous, being that the counting of the test germination standard is recommended on the 10th and 28th day. In field emergence is relatively long; which justifies the use of techniques that increase germination speed and uniformity. A promising method is osmopriming. In the present study, our goal was to evaluate the effect of different potentials of osmopriming, with PEG 6000, in the germination of parsley seeds, and to identify optimum osmotic potential to increase the germination of these seeds. Parsley seeds of the Lisa and Portuguesa cultivars from two lots were bought locally and were primed by the method of direct immersion of the seeds in water solutions with osmotic potential: 0.0, -0.5, -1.0 and -1.5 MPa, obtained with the addition of PEG 6,000, under constant aeration at 25ºC for 144 hours, with one control (unprimed seeds). Percentage of germination (at 10 and 28 days), index of germination speed, and speed of germination were evaluated. Osmopriming increased the speed and percentage of germination of parsley seeds, being that the indicated osmotic potential is between -1.0 and -1.5 MPa.

Palavras-chave : Petroselinumsativum; priming; germination; germination speed.

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