Resumo

COVARRUBIAS PRIETO, Jorge et al. Osmoaconditioning of six maize populations subjected to accelerated aging. Rev. Mex. Cienc. Agríc [online]. 2019, vol.10, n.8, pp.1759-1770.  Epub 05-Fev-2021. ISSN 2007-0934.  https://doi.org/10.29312/remexca.v10i8.1699.

The pre-treatment of the seeds allows to improve their behavior in the field, through an increase in germination, vigor and lengthen the shelf life. In this investigation the effect of the pretreatment with potassium nitrate (3%) plus gibberellins (GA3) (0.06%) in two periods: 6 and 12 h on the seed of five races of maize, including an experimental hybrid (Roque B16) was quantified. The objective of this research was to undergo osmoaconditioning to these races of maize and then to accelerated aging and quantify their effect on the percentage of germination. The Roque B16 hybrid showed no difference in germination percentage and maintained a good germination percentage after 60 days of storage. The Elotes Occidentales (purple pigment) race exhibits a similar behavior between the control and the treated seed at 7 and 30 days of storage, at 60 days it indicated a significant fall. Elotes Occidentales (red pigment) showed a significant decrease at 7, 30 and 60 days of storage with the 12 h treatment. The Palomero race showed a significant decrease in germination at seven days with the 12 h treatment, Amarillo Roque evidenced a significant decrease at 7 and 60 days of storage with the 12 h osmoaconditioning, the Pozolero race revealed a significant decrease at 7 and 30 days of storage with 12 h and at 60 days with both periods of treatment (6 and 12 h). The Amarillo and hybrid varieties were statistically equal with a higher germination percentage during storage. Purple and Pozolero were very affected by the storage at three months. Rojo was also affected, but to a lesser extent than the previous two.

Palavras-chave : ashes; conductivity; creole race; gibberellins; potassium nitrate.

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