Abstract
Lavender is an important perfume, cosmetic and pharmaceutical plant worldwide because of its high quality and quantity essential oil content. Besides, it is an important ornamental plant with pleasant fragrance and beautiful vegetative pattern in bush form. In seed propagation, there are some problems such as low germination times and germination rate. The aim of this study was to investigate the effects of some selected osmotic conditioners on lavender seeds. Osmotic conditioning (OC) was performed in seeds with methyl jasmonate (MeJA) (1.0 mM) and seaweed ( Ascophyllum nodosum ) extract (1:500 seaweed extract) at 20°C for 1 and 2 days. After the treatment, seeds were characterized for germination tests at 25°C. Germination indexes of the seeds, germination rates and mean germination time were determined. Seaweed treatment for 1 and 2 day applications and MeJA treatment for 2 days significantly increased the germination rates in lavender seeds compared to the control. In addition seaweed 2 day treatment and MeJA 2 day treatment also increased the germination index. In conclusion, this study indicated that both MeJA and seaweed treatments had positive effects on germination parameters studied in lavender seeds.
Highlights
Lavender (Lavandula sp.) is a very important essential oil plant belonging to the Lamiaceae family [1]
Lavender is an important perfume, cosmetic and pharmaceutical plant grown in diverse climatic conditions of the world because of its high quality essential oil content [1]
In this study germination properties of lavender seeds treated with various concentrations and duration of methyl jasmonate (MeJA) and seaweed extract along with water and untreated seeds were investigated
Summary
Lavender (Lavandula sp.) is a very important essential oil plant belonging to the Lamiaceae family [1]. There are three important types of lavenders in the world with high commercial value. = L. hybrida L.) and spike levander (Lavandula spica = L. latifolia Medik.) [2]. Lavender is an important perfume, cosmetic and pharmaceutical plant grown in diverse climatic conditions of the world because of its high quality essential oil content [1]. Lavender is a perennial plant and may have commercial value for up to 15-20 years. At the tip of the flower, stalks are 15-20 cm long flower spike-cluster axes. The fruit is 22 mm long and 1 mm wide. The germination rates and germination powers of these small seeds are weak, usually 2-3% being less than 10%
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