Enhanced Germination of Echinacea angustifolia Seed with Ethephon and Sodium Hypochlortie Treatment
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
The influence of sodium hypochlorite and ethephon on the germination of narrow-leaved purple coneflower (Echinacea angustifolia) was investigated. Treatment of seeds with ethephon (1 mM) for 2 h followed by soaking in 0.525% sodium hypochlorite greatly increased germination (>90%). The treatment of seed with a combination of sodium hypochlorite and ethephon shortened number of days required to reach 50% of the final germination (T₅₀) from 4.2 days in control to 1.1 days. Seedlings grown from ethephon-treated seeds had shorter and thicker hypocotyls and roots with higher dry weights compared to the control. The same trend was observed during seedling emergence from soil. Ethephon treatment longer than 2 h resulted in weaker seedlings, probably due to leaf senescence. Anthocyanin content in seedling leaves increased linearly from 0.04 mg/g fresh weight in control to 3.72 mg/g fresh weight in 24 h treatment as the time of seed exposure to ethephon increased. Seed treatment with bleach and ethephon may well be practiced to facilitate the establishment of E. angustifolia in the field
Abstract
The influence of sodium hypochlorite and ethephon on the germination of narrow-leaved purple coneflower (Echinacea angustifolia) was investigated. Treatment of seeds with ethephon (1 mM) for 2 h followed by soaking in 0.525% sodium hypochlorite greatly increased germination (>90%). The treatment of seed with a combination of sodium hypochlorite and ethephon shortened number of days required to reach 50% of the final germination (T₅₀) from 4.2 days in control to 1.1 days. Seedlings grown from ethephon-treated seeds had shorter and thicker hypocotyls and roots with higher dry weights compared to the control. The same trend was observed during seedling emergence from soil. Ethephon treatment longer than 2 h resulted in weaker seedlings, probably due to leaf senescence. Anthocyanin content in seedling leaves increased linearly from 0.04 mg/g fresh weight in control to 3.72 mg/g fresh weight in 24 h treatment as the time of seed exposure to ethephon increased. Seed treatment with bleach and ethephon may well be practiced to facilitate the establishment of E. angustifolia in the field
참고문헌 (18)
- Bratcher, C. B., "Stratification improves seed germination of five native wildflower species", HortScience, 28, pp.899~901 (1993)
- Carpenter, W. J., "Growth regulators and storage temperature affect on germination of Coreopsis seed", HortScience, 27, pp.1190~1193 (1992)
- Cheng, G. W., "Activity of phenylalanine ammonia-lyase (PAL) and concentrations of anthocyanins and phenolics in developing strawberry fruit", J. Amer. Soc. Hort. Sci., 116, pp.865~869 (1991)
- Feghahati, S. M. J., "Ethylene-, light-, and prechill- enhanced germination of Echinacea angustifolia seeds", J. Amer. Soc. Hort. Sci., 119, pp.853~858 (1994)
- Finnerty, T., "Effects of seed priming on plug production of Coreopsis lanceolata and Echinacea purourea", J. Environ. Hort., 10, pp.129~132 (1992)
- Harbage, J. F., "Micropropagation of Echinacea angustifolia, E. pallida, and E. purpurea from stem and seed explants", HortScience, 36, pp.360~364 (2001)
- Haynes, J. G., "Seed treatments improved the germination and seedling swichgrass (Panicum virgatum L.)", HortScience, 32, pp.1222~1226 (1997)
- Hobbs, C., "The echinacea handbook", pp.1~7 (1989), Eclectic medical publication
- Kepczynski, J., "Ethylene in seed dormancy and germination", Physiol. Plant., 101통권 : 7, pp.720~726 (1997)
- Kochankov, V. G., "Effect of temperature, growth regulators and other chemicals on Echinacea purpurea (L.) Moench. seed germination and seedling survival", Seed Sci. & Technol., 26, pp.547~554 (1998)
- Leubner-Metzger, G., "Ethylene responsive element binding protein (EREBP) expression and the transcriptional regulation of class 1β-1,3-glucanase during tobacco seed germination", Plant Molecular Biol., 38, pp.758~795 (1998)
- Li, T. S. C., "Echinacea: Cultivation and medicinal value", HortTechnology, 8, pp.122~129 (1998)
- Pill, W. G., "Gibberellic acid during priming of Echinacea purpurea seeds improves performance after seed storage", J. Hort. Sci., 71, pp.287~295 (1996)
- Samfield, D. M., "Germination of Coreopsis lanceolata and Echinacea purpurea seeds following priming and storage", HortScience, 25, pp.1605~1606 (1990)
- Sari, A. O., "Echinacea angustifolia: An emerging new medicinal plant. in: Perspectives on new crops and new uses", pp.490~493 (1999), ASHS Press
- Sari, A. O., "Ethephon can overcome seed dormancy and improve seed germination in purple coneflower species Echinacea angustifolia and E. pallida", HortTechnology, 11, pp.202~205 (2001)
- Smith-Jochum, C., "Field establishment of three Echinacea species for commercial production", Acta Horticulturae, 208, pp.115~120 (1987)
- Wartidiningsih, N., "Osmotic priming of chilling stratification improves seed germination of purple coneflower", HortScience, 29, pp.1445~1448 (1994)