Soybean seed radiosensibility to 60Co gamma rays

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Published: Jul 5, 2013
Keywords:
radiosensibility, soybean, seed, germination

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C. de la Fé
Instituto Nacional de Ciencias Agrícolas

Abstract

This study was developed at the National Institute of Agricultural Sciences, with the objective of evaluating soybean seed radiosensibility to 60Co gamma rays. Samples of 50 seeds each from Cubasoy-23 cv. were selected, irradiated and then seeded in pots under semicontrolled conditions in spring, 1997. Radiation rates from 50 to 480 Gy were used with increments of 50 Gy between 50 and 200 Gy and of 40 Gy between 200 and 480 Gy. Evaluations consisted of percentage of germinated seeds at three, six and nine days after sowing, plant height at 10, 20 and 50 days as well as leaf pair number at 10 and 20 days after sowing. This study proved the occurrence of a strong effect of the rates applied to percentage of germinated seeds, doses closed to 280 Gy showing the highest radiostimulating effect of germination. From the viewpoint of plant height, the effect of rates applied corresponded to the one described to other irradiated biological materials, it being characterized by an increment of low rates followed by an every time higher reduction when increasing the doses applied. In turn, leaf emergence had to do with plant height. Results enable to suggest the application of rates closed to 360 Gy in studies aimed to create genetic variability in breeding programs by mutation induction.

Article Details

How to Cite
de la Fé, C. (2013). Soybean seed radiosensibility to 60Co gamma rays. Cultivos Tropicales, 21(2), 43–47. Retrieved from https://ediciones.inca.edu.cu/index.php/ediciones/article/view/749
Issue
Vol. 21 No. 2 (2000)
Section
Original Article

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