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VARIABILIDAD INDUCIDA EN Tigridia pavonia (L. f.) D.C. var. Sandra POR IRRADIACIÓN DE BULBOS CON RAYOS GAMMA DE 60Co

2003; Chapingo Autonomous University; Volume: IX; Issue: 02 Linguagem: Inglês

10.5154/r.rchsh.2002.06.037

2007-4034

E. Díaz-L., J. Pichardo-R., E. De la Cruz-T., T. Norman-M., F. Sandoval-R, L. Vázquez-G.,

Seed and Plant Biochemistry

IIn this study the effect of gamma rays on bulbs of Tigridia pavonia (L.f.) D.C. variety Sandra was determined. The bulbs were irradiated in the Gammacell 220 in the Instituto Nacional de Investigaciones Nucleares (ININ). The doses were 0, 5, 10, 15, 20, 25 and 30 Gy. The experiment was established in a rustic greenhouse at Campus Universitario El Cerrillo, Toluca, México. The experimental design was completely randomized with three replications (7 x 3 = 21 experimental units), with a total 336 bulbs. The results indicated that gamma rays affected: a) days to emergence, b) plant height, c) number of stems per plant, d) stem length, e) number of leaves per stem, f) leaf length, g) number of stems per bulb, h) number of flowers per bulb, and i) flower diameter. The gamma rays did not affect: a) days to flower stem apparition, b) number of branches per stem and c) number of fruits per flower stem. Doses higher than 15 Gy induced deformation of flowers. Three color mutations were observed in Tigridia pavonia generated by irradiation between 15 and 25 Gy.