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More articles from Issue 9, 2020

Black locust stand structure on the sterile dump in the middle basin of Jiu River (Romania)

Effect of temperature on seed germination of two Callistemon species (Myrtaceae)

Effect of pre-soaking substrate and light availability on seed germination and seedling establishment of Dracaena draco (L.) L., a threatened species

Growth and quality of Pinus nigra (Arn.), Pinus sylvestris (L.) and Pinus pinaster (Aiton) seedlings in two container types

Effect of using harvesting residues as a nursery media on seedling weight in Brutian pine (Pinus brutia Ten.)

Citations

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Manuel Cartereau, Alex Baumel, Agathe Leriche, Frédéric Médail, Arnoldo Santos Guerra, Arne Saatkamp

(2023)

Germination niche of the endangered dragon tree Dracaena draco (L.) L. subsp. draco of the Macaronesian Islands

Flora, 308()

10.1016/j.flora.2023.152405

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Melike Altunbay, Muhammet Doğan, Buğrahan Emsen

(2025)

Effects of Different Pre-Soaking Durations on Germination and Growth of Green Lentil (Lens culinaris L.) Microgreens

NATURENGS MTU Journal of Engineering and Natural Sciences Malatya Turgut Ozal University, 6(2)

10.46572/naturengs.1812055

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Petr Maděra, Fabio Attorre, Kay Van Damme

(2025)

New knowledge in dragon tree research

Journal of Forest Science, 71(5)

10.17221/9/2025-JFS

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Gidske L. Andersen, Knut Krzywinski, Mohammed Talib, Mohammed A. M. Musa

(2022)

Endangered Dracaena ombet Population in the Red Sea Hills, Sudan, Recovers After Abrupt Change

Frontiers in Environmental Science, 10()

10.3389/fenvs.2022.793583

Effect of pre-soaking substrate and light availability on seed germination and seedling establishment of Dracaena draco (L.) L., a threatened species

Abdenour Kheloufi Orcid logo ,
Abdenour Kheloufi
Mohamed Boukhecha ,
Mohamed Boukhecha
Aziza Ouachi
Aziza Ouachi

Published: 01.12.2019.

Volume 0, Issue 9 (2020)

pp. 20-29;

https://doi.org/10.21750/refor.9.03.77

Abstract

The Dragon tree, Dracaena draco (L.) L., is an extremely threatened species. Its natural regeneration is disturbed and population appears to decrease rapidly. To design appropriate germination and seedling establishment protocols for a species conservation and restoration program, we studied the effects of pre-soaking, substrate and light availability treatment on seed germination for 15-day period. The condition for light availability corresponded to the sowing depth (at surface or at 2 cm depth). Germination occurred better in the dark when seeds were sown at 2 cm depth.  Our results showed that D. draco seeds sown in the sand under dark condition and after 24 hours pre-soaking in warm water germinated better and recorded 82.5% of final germination percentage (FGP). However, seedlings grew better in potting soil and recorded 54 mm of length. The maximum FGP of 51.3% was recorded under light condition. These results indicate that sowing depth and light availability could be a limiting factor for D. draco seed germination in natural condition. Furthermore, the establishment of D. draco seedlings (shoot and root length) during an 8-week period in pots was also assessed and illustrated. More research on seed ecophysiology is required to understand the mechanisms controlling seed germination of D. draco in arid and semi-arid conditions viz. salinity and drought.

References

Ali, A. S., & Elozeiri, A. A. (n.d.). Metabolic Processes During Seed Germination. In Advances in Seed Biology. https://doi.org/10.5772/intechopen.70653
Ashmore, S. E., Hamilton, K. N., & Offord, C. A. (2011). Conservation technologies for safeguarding and restoring threatened flora: case studies from Eastern Australia. In Vitro Cellular & Developmental Biology - Plant, 47(1), 99–109. https://doi.org/10.1007/s11627-010-9320-9
Bell, D. T. (1999). The Process of Germination in Australian Species. Australian Journal of Botany, 47(4), 475–517. https://doi.org/10.1071/BT98007
Bewley, J. D., & Black, M. (2012). Physiology and biochemistry of seeds in relation to germination: vol. 2: viability, dormancy, and environmental control. 375p.
Burmeier, S., Donath, T. W., Otte, A., & Eckstein, R. L. (2010). Rapid burial has differential effects on germination and emergence of small- and large-seeded herbaceous plant species. Seed Science Research, 20(3), 189–200. https://doi.org/10.1017/S0960258510000127

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