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<p><i>Spathiphyllum cannifolium</i> (Peace lily) is an economically important ornamental plant, yet conventional in vitro rooting restricts large-scale propagation because of high agar costs, fragile root systems, and poor acclimatization. This study presents the first integration of a microponic culture with ex vitro rooting, establishing a scalable and cost-effective system for micropropagated <i>S. cannifolium</i>. Key physicochemical parameters—indole-3-butyric acid (IBA) concentration, aeration rate, planting density, and container volume—were systematically optimized. The combination of 0.3&#xa0;mg/L IBA, 300 mL/min aeration, and 2 × 2&#xa0;cm spacing yielded the highest rooting rate and biomass accumulation. Scaling up to a 6.5&#xa0;L system maintained 100% rooting and vigorous plantlet growth, confirming industrial-scale feasibility. Physiological monitoring revealed time-course recovery of stomatal functionality, with over 50% of stomata regaining closure ability by day 8, providing a quantitative indicator for acclimation readiness. Compared with conventional in vitro rooting, the microponic approach produced more robust plantlets with complete stomatal control and higher post-transplant survival. Furthermore, a substrate mixture of one-third vermiculite and two-thirds turfy soil ensured optimal post-rooting growth. This work establishes a physiologically guided and commercially scalable microponic platform for the sustainable propagation of <i>S. cannifolium</i> and offers a transferable framework for other Araceae ornamentals.</p>

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Ex vitro rooting of Spathiphyllum cannifolium in a microponic system: optimization of key physicochemical factors

  • 期刊论文

  • 发表日期：

    2026年3月28日

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  • Peng-Yu Zhang,
  • Xue-Han Zong,
  • Shuo Yu,
  • Yin-Ji Jiang,
  • Xin-Mei Jin,
  • Song-Hao An,
  • Mei-Lan Lian

摘要

Spathiphyllum cannifolium (Peace lily) is an economically important ornamental plant, yet conventional in vitro rooting restricts large-scale propagation because of high agar costs, fragile root systems, and poor acclimatization. This study presents the first integration of a microponic culture with ex vitro rooting, establishing a scalable and cost-effective system for micropropagated S. cannifolium. Key physicochemical parameters—indole-3-butyric acid (IBA) concentration, aeration rate, planting density, and container volume—were systematically optimized. The combination of 0.3 mg/L IBA, 300 mL/min aeration, and 2 × 2 cm spacing yielded the highest rooting rate and biomass accumulation. Scaling up to a 6.5 L system maintained 100% rooting and vigorous plantlet growth, confirming industrial-scale feasibility. Physiological monitoring revealed time-course recovery of stomatal functionality, with over 50% of stomata regaining closure ability by day 8, providing a quantitative indicator for acclimation readiness. Compared with conventional in vitro rooting, the microponic approach produced more robust plantlets with complete stomatal control and higher post-transplant survival. Furthermore, a substrate mixture of one-third vermiculite and two-thirds turfy soil ensured optimal post-rooting growth. This work establishes a physiologically guided and commercially scalable microponic platform for the sustainable propagation of S. cannifolium and offers a transferable framework for other Araceae ornamentals.