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Dormancy overcoming of Brachiaria brizantha (Hochst.ex A.Rich) Stapf seeds cv. Marandu by potassium nitrate, hypochlorite, thiourea and ethanol


Dormancy overcoming of Brachiaria brizantha (Hochst.ex A.Rich) Stapf seeds cv. Marandu by potassium nitrate, hypochlorite, thiourea and ethanol



Revista Brasileira de Sementes 20(2): 282-285



The efficiency of several chemical treatments in overcoming physiological seed dormancy in Brachiaria brizantha Marandu, was verified in seeds recently harvested, processed and dried to 12% moisture content (wet basis). Seeds/spikelets were mechanically-dehulled individually and the caryopsis were imbibed in vacuum for 10 minutes in different concentrations of potassium nitrate, thiourea and ethanol. In another assay, different time of imbibition in sodium hypochlorite was evaluated.

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