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Agriscientia
versión On-line ISSN 1668-298X
Resumen
AGUERO, C.G; PEREYRA, G.R y ROLANDO, R.O. Método alternativo de germinación para determinar la calidad de semillas en Buffel Grass (Cenchrus ciliaris L.). Agriscientia [online]. 2017, vol.34, n.1, pp.47-58. ISSN 1668-298X.
One problem in assessing the physiological quality Cenchrus ciliaris L. are low germination percentages obtained in ISTA tests because dormancy in seeds is not eliminated effectively with the recommended pre-treatments. The aim of this work was to develop a protocol of analysis to determine more accurately seed quality in C. ciliaris L. Freshly harvested seeds of the cultivar Texas were used. The tests were conducted for 6 months at intervals of 3 months between each. The ratio between full and empty forets and viability were determined by tetrazolium. In the germination tests different alternative seeds were used: intact fascicle, scarified fascicle, intact cariopses and scarified ones. The evolution of dormancy in time (0, 3, 6 months) and its breakdown with different treatments (control, cold, heat, KNO3 and GA3) were evaluated. In order to determine the physiological quality in C. ciliaris L. it is advisable to use scarified cariopses and gibberellic acid treatment.
Palabras clave : Dormancy; Cariopse; Pre-treatments.