Root-Zone Heating Improves Growth and Development of Cyclamen persicum under Low Air Temperature

다국어 초록 (Multilingual Abstract)

This study was conducted to examine the effect of root-zone temperature (RZT) on growth and development of cyclamen (Cyclamen persicum cv. Metis Scarlet Red) under low air temperature regime for energy saving. Cyclamen plants with 6-7 unfolded leaves were exposed to RZT 12, 16, 20, or 24°C in a constant 12°C room equipped with floating hydroponic and nutrient-stagnant wick culture systems. Root-zone heating promoted growth, showing the maximum dry weight at 20°C. The number of leaves and visible buds (VB) at harvest increased as RZT increased from 12 to 20°C, but slightly decreased from 20 to 24°C. Root-zone heating promoted photosynthesis and hastened leaf unfolding and VB emergence. RZT of 20°C increased root activity as compared with that of 12°C, although there was no difference in leaf width and root length. Most favorable RZT for growth and development of cyclamen under low air temperature was 20°C. Therefore, root-zone heating improved growth and development in ‘Metis Scarlet Red’ cyclamen under low air temperature for saving heating energy.

목차 (Table of Contents)

• Abstract
• Introduction
• Materials and Methods
• Results and Discussion
• Acknowledgments
• Literature Cited

참고문헌 (Reference)

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