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Journal of Biological Sciences

Year: 2010 | Volume: 10 | Issue: 6 | Page No.: 541-544
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Authors

A. Alderete- Chavez

L. Aguilar-Marin

N. De la Cruz-Landero

J.J. Guerra-Santos

R. Brito

E. Guevara

R. Gelabert

Keywords

This study was conducted to determine the effectiveness of scarification treatments in the germination of Crotalaria retusa to propose an effective and practical method for breaking seed dormancy. Seeds were collected on December 2009 from disturbed forests in coastal dunes and tested with different times of exposure (0, 5, 10, 20 and 30 min) to sulfuric acid immersion on February 2010, assays were done in the Seed laboratory of Natural Sciences Faculty a day/night regime of 32/18°C was taken into consideration along with a 12 h photoperiod. The germination was observed daily early in the morning for a period 30 days. All the treatments initiated their germination three days after the start of the experiment and reached their maximum value between the days twenty-six and twenty-nine. Seeds treated with sulphuric acid, responded positively in all cases but, the immersion in acid for thirty or twenty minutes were the treatment that gave the best results, for purposes of re-colonization in forest areas is recommended the use of these treatment.
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