Enhancing Germination and Assessing the Longevity of Native Plants' Seeds with Dormancy through Different Priming Techniques

Hormonal priming (mechanical scarification + 100 ppm gibberellic acid for six hours) and hydropriming (mechanical scarification + water for 8 h) yield p50 viability-loss times of 22 and 21 days for Vachellia pachyceras seeds.

• Why it matters: Seed dormancy limits germination and natural seedling recruitment in arid and semi-arid desert conditions, narrowing establishment opportunities during unpredictable rainfall windows.
• What they did: Seeds were scarified to remove physical dormancy, then exposed to multiple priming treatments; relative longevity was measured via artificial ageing and analyzed with probit analysis and analysis of variance.
• The result: For Vachellia pachyceras, both effective priming approaches indicate medium longevity, supporting priming as a way to improve germination timing within short favorable periods.

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