Effects of Osmotic Conditioning Treatments at Different Temperatures on Mean Germination Time and Rate of Heliotropium greuteri

Year 2020, Volume: 14 Issue: 40, 1 - 3, 26.06.2020

Mustafa Demirkaya , Akife Dalda Şekerci , Eyüp Teke Osman Gülşen

Abstract

Heliotropium is a good ornamental plant with pleasant fragrance and beautiful vegetative pattern in the nature. In seed propagation, there are some problems such as extended germination time and low germination rate. The aim of this study was to investigate the effects of some selected osmotic conditioners on Heliotropium seeds. Osmotic conditioning (OC) was performed in seeds with humidification, water, methyl jasmonate (MeJA) (1.0 mM) and seaweed (Ascophyllum nodosum) extract (1:500 seaweed extract) for 1, 2 and 3 days at 20 °C and 30 °C. After the treatment, seeds were characterized for germination tests at 25 °C and 35 °C. Germination indexes, germination rates and mean germination times of seeds were determined. The treatment of water for 3 days gave the highest germination rate with 23 % when the lowest germination rate (4 %) was determined in the control group. When the mean germination times of Heliotropium seeds were examined, the earliest germination was observed humification 2 days treatment (8.3 days). So, OC treatments made with seaweed and methyl jasmonate made positive contributions to the germination of Heliotropium seeds.

Keywords

Heliotropium greuteri , MeJA , Seaweed , Osmotic condition

References

• Kence, A (1992). Biyolojik zenginlikler, sorunlar ve öneriler (in Turkish). Tarım ve Köyişleri Bakanlığı Dergisi, Sayı: 74. Ankara.
• Al-Turki, TA, Omer, S, Ghafoor, A (2001). Two new species of Heliotropium L. (Boraginaceae) from Saudi Arabia. Botanical J. Linnean Society, 137: 215-220.
• Collenette, S (1999). Wild flowers of Saudi Arabia. Riyadh: National Commission for Wildlife Conservation and Development, p. 89-92.
• Akhani, H (2007). Diversity, biogeography, and photosynthetic pathways of Argusia and Heliotropium (Boraginaceae) in South-West Asia with an analysis of phytogeographical units. Botanical J. Linnean Society, 155: 401-425.
• Arin, L, Kiyak, Y (2003). The effects of pre-sowing treatments on emergence and seedling growth of tomato seed (Lycopersicon esculentum Mill.) under several stress conditions. Pakistan Journal of Biological Sciences, 6: 990-994.
• Sivritepe, H Ö (2000). Deniz Yosunu Ekstraktı (Ascophyllum nodosum) ile Yapılan Ozmotik Koşullandırma Uygulamalarının Biber Tohumlarında Canlılık Üzerine Etkileri. III. Sebze Tarımı Sempozyumu, 11-13.
• Demirkaya, M (2016). Deniz yosunu (Ascophyllum nodosum) ekstraktı uygulamalarının biber ve soğan tohumlarının canlılığı ve gücüne etkileri/Effects of Seaweed (Ascophyllum nodosum) extract application on viability and vigour of pepper and onion seeds. Erciyes Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 26(3).
• Demirkaya, M (2012). Deniz Yosunu (Ascophyllum nodosum) Ekstraktı Uygulamalarının Domates Tohumlarının Canlılığı ve Gücüne Etkileri. Alatarım, 11(1).
• Korkmaz, A, Tiryaki, I, Nas, M N, Ozbay, N (2004). Inclusion of plant growth regulators into priming solution improves low-temperature germination and emergence of watermelon seeds. Canadian journal of plant science, 84:1161-1165.
• Demirkaya, M (2016). Metil Jasmonat ve Deniz Yosunu (Ascophyllum nodosum) Ekstraktı ile Ozmotik Koşullandırma Uygulamalarının Düşük Sıcaklıta Biber Tohumlarının Çimlenme ve Ortalama Çimlenme Süresi Üzerine Etkileri. Selçuk Tarım Bilimleri Dergisi, 3: 42-47.
• Coşkun, G, Gülşen, O, Demirkaya, M (2016). Çerezlik kabak tohumlarında bazı ön uygulamaların çimlenme üzerine etkileri/Effects of some pretreatments on germination of pumpkin seed. Erciyes Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 32:1-6.
• Sivritepe, H Ö, Demirkaya, M (2011). Does humidification technique accomplish physiological enhancement better than priming in onion seeds? In V Balkan Symposium on Vegetables and Potatoes 960 (pp. 237-244).
• Demirkaya, M, Aydın, B, Dalda-Şekerci, A, Gülşen, O (2017). Effects of Osmotic Conditioning Treatments of Lavender (Lavandula angustifolia) Seeds on Mean Germination Time and Germination Rate. International Journal of Secondary Metabolite, 4:418-422.
• ISTA, 2005. International Seed Testing Association, p. 10. Bassersdorf, Switzerland.
• Bekendam, J, Grob, R (1979). Handbook for seedling evaluation. Handbook for seedling evaluation., (Ed2).
• Ellis, R H, Roberts, E H (1981). The quantification of ageing and survival in orthodox seeds. Seed Science and Technology (Netherlands).
• Copeland, L O, McDonald, M F (2012). Principles of seed science and technology. Springer Science & Business Media.