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Preliminary Evaluation of Different Seed Dormancy Breaking Methods in Wild Tuber Cowpea (Vigna Vexillata)

Author

Listed:
  • Parwada Cosmas
  • Kamota Agathar
  • Mandumbu Ronald
  • Chikuvire T. John
  • Mukweva Simon

Abstract

Effectiveness of different seed dormancy breaking methods in Vigna vexillata seeds were evaluated. Two germination tests were done at 1 and 4 weeks after seed collection. A randomized completely block design (RCBD) with 8 seed dormancy breaking methods was used. The methods were; pre-chilling (PRC) in 5oC for 1 week, preheating (PRH) at 35oC for 1 week, sealed polythene envelops (SPE), gibberellic acid (GA3) 0.05%, potassium nitrate (KNO3) 0.2%, sulfuric acid scarification (H2SO4) and mechanical scarification (MS) and a control. The H2SO4 and MS had highest germination percentage. There was a significant difference in germination between seeds sown at 1 and 4 weeks after seed harvesting. Sowing V. vexillata seeds at 4 weeks after harvesting had higher germination percentage than 1 week after harvesting. Therefore H2SO4 and MS were effective in breaking seed dormancy at least 4 weeks after harvesting. It is important to repeat the experiment and perform viability tests prior to sowing as this study assumed that all seeds were viable.

Suggested Citation

  • Parwada Cosmas & Kamota Agathar & Mandumbu Ronald & Chikuvire T. John & Mukweva Simon, 2019. "Preliminary Evaluation of Different Seed Dormancy Breaking Methods in Wild Tuber Cowpea (Vigna Vexillata)," Canadian Journal of Agriculture and Crops, Online Science Publishing, vol. 4(1), pages 33-40.
    • Handle: RePEc:onl:cjoaac:v:4:y:2019:i:1:p:33-40:id:397
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