**Determination of the Effect of Drought Stress on the Seed Germination in Some Plant Species**

Nurcan Yigit, Hakan Sevik, Mehmet Cetin and Nur Kaya

Additional information is available at the end of the chapter

http://dx.doi.org/10.5772/63197

### **Abstract**

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3(5): 2992–2996. Available online at www.pelagiaresearchlibrary.com.

@44.6850248,26.133245,12z.

42 Water Stress in Plants

ind\_starea\_mediului\_in\_romania-15.

Especially the use of drought‐resistant plant species reduces maintenance and irriga‐ tion costs, andplantsincrease the retentionand success to continue its life in arid landscape. In this study, some plant species used have been studied to determine their tolerance to drought stress in gardens and parks in Kastamonu. For this purpose, germination trials have been in conducted -2, -4, -6, and -8 Bar water stress. Landscaping applications commonly used some species such as *Cupressus sempervirens* L., *Ailanthus altissima* (Mill.) Swingle, *Pyracantha coccinea* Roem, *Thuja orientalis*, *Pinus sylvestris* L., *Sophora japonica*, *Cedrus libani* A. Rich., *Acer pseudoplatanus* L., *Pinus brutia* Ten., and *Pinus nigra* Arnold. ssp. *pallasiana* (Lamb.) Holmboe*.* Their seeds were evaluated different levels of water stress in the germination percentage. PEG 6000 solution was used in the formulation of water stress. The seeds were exposed to constant temperature of 25°C for a period of 35  days at germination cabinet. As a result, this experiment calculated germination in different water stress levels what percentage has fallen, so the least affected by in‐ creased water stress was studied to determine the species. Also results showed in‐ creased water stress and reduce the percentage of germination in all species. The highest level of water stress -8 Bar, which was also obtained stress level proportional germina‐ tion values *Pinus nigra* Arnold. ssp. *pallasiana* (Lamb.) Holmboe (64.8%) and *Pinus brutia* Ten. (46.5%).

**Keywords:** polyethylene glycol, germination percentage, PEG, drought stress, plants, seed

© 2016 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
