Abstract

AGUERO, C.G; PEREYRA, G.R  and  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.

Keywords : Dormancy; Cariopse; Pre-treatments.

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