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Effects of different methods of breaking seed dormancy of Brachiaria humidicola (Rendle) Schweickerdt



Effects of different methods of breaking seed dormancy of Brachiaria humidicola (Rendle) Schweickerdt



Cientifica 14(1-2): 65-72



Washed and unwashed B. humidicola seeds were chemically (potassium nitrate, gibberellic acid and sulphuric acid) or mechanically scarified and submitted to a constant (30 degrees C) or alternating (20/35 degrees , 16 h/8 h) temp. regime in the presence or absence of light. None of the dormancy breaking methods were successful at 30 degrees. Treating washed seeds with gibberellic acid followed by an alternating temp. regime was the most effective dormancy breaking method (51.5% germination).

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Accession: 001580491

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