Fotoselektif Netlerin Çilek Bitkilerine Fizyolojik Etkileri

Güneş ışığından faydalanma fotoselektif fileler aracılığıyla bitki fizyolojisini istenilen doğrultuda değiştirmek amacıyla kullanılabilir. Çalışmamızda farklı renkteki fileleri çilek bitkisinin fizyolojik tepkilerini belirleme amacıyla denenmiştir. Çalışma 2016 yılında Selçuk Üniversitesinde kurulmuştur. Kabarla çilek çeşidi çalışma için seçilmiş ve Mayıs ayında 7 litrelik saksılara dikilmiştir. Denemeye başlamadan önce bütün bitkiler dışarıda yetiştirilmiş ve düzenli sulanmıştır. Gölge uygulaması için, güneş ışığı %40’ lık gölgelemeye sahip kırmızı, yeşil ve siyah filelerle azaltılmış ve Temmuz-Eylül ayları arasında (2 ay) gölgelenmiştir. Çalışmanın sonunda bazı fizyolojik ve mikroklima özellikleri değerlendirilmiştir. Yeşil file en yüksek SPAD değerine (39.79) sahipken kırmızı file en düşük değere (34.99) sahip olmuştur. Fotoselektif netler bitkilerin antosiyanin içeriğini kontrole kıyasla artırmıştır. Stoma iletkenliği kırmızı filede tam güneş ışığına kıyasla %38 azalmıştır. En düşük toprak sıcaklığı yeşil filede belirlenmiştir. Renkli fileler hava sıcaklığını kontrol grubuna göre artırmıştır. Sonuç olarak, fotoselektif filelerin radyasyona karşı faydalı etkisi kuraklık, aşırı ışık radyasyonu, tuzluluk gibi çevresel streslerin zararlı etkilerini azaltmada kullanılabilir.

Physiological Effects of Photoselective Nets in Strawberry Plant

The sunlight manipulation can be utilized to promote the desiredplant physiology by using photoselective nets. In our study, we testeddifferent colored nets to determine the physiological responses of thestrawberry plant. The study was conducted in 2016 at SelcukUniversity in Turkey. A strawberry (Fragaria × ananassa Duch.) cvKabarla was used in the study planted in 7 L pots. Before theshading treatment, all plants were grown outdoors. For the shadingexperiment, sunlight was declined by red, green and black netsallowing 40% shade with covering from July until September of 2016(during 2 months). At the end of the experiment, some physiologicaland microclimate properties were evaluated. The green net showedthe highest SPAD value (39.79), while the lowest value was obtainedin red net (34.99). The photoselective nets increased anthocyanincompared to control. Stomatal conductance in the red colored netdecreased by approximately 38% when compared to full sunlight.The lowest soil temperature was observed under green colored net.Colored nets increased air temperature compared to control. As aresult, the mitigative effect of the photoselective nets againstradiation could be used to decrease the malignant effects ofenvironmental stresses such as drought, excessive solar radiation,salinity.

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