Sıcaklığın Dalbergıa sissoo Tohumlarının Çimlenme Özelliklerine Etkisi

Yıl 2007, Cilt: 20 Sayı: 2, 203 - 210, 01.12.2007

M. Atik O. Karagüzel S. Ersoy

Öz

Bu çalışma çimlenme sıcaklığının Dalbergia sissoo (Roxb. ex DC.) tohumlarının çimlenme özelliklerine etkisinin saptanması amacıyla gerçekleştirilmiştir. Çalışmada 4 aylık tohumlara 10ºC, 15ºC, 20ºC, 25ºC ve 30ºC çimlenme sıcaklıkları etkisinde 21 günlük çimlenme testleri uygulanmış ve çimlenme oranı, çimlenme enerjisi, çimlenme indeksi, ortalama çimlenme süresi, kök ve gövde uzunluğu ve yaş ve kuru ağırlıkları ile ilgili gözlem ve ölçümler yapılmıştır. Sonuçlar çimlenme sıcaklığının çimlenme özellikleri üzerinde önemli düzeyde etkili olduğunu göstermiş ve 10ºC çimlenme sıcaklığı etkisinde D. sissoo tohumlarında çimlenme gözlenmemiştir. İncelenen çimlenme özelliklerinde en yüksek değerler ve en kısa çimlenme süresi 25ºC’de çimlendirilen tohumlarda saptanmış, bunları 30ºC’de çimlendirilen tohumlar izlemiştir. 15 ve 20ºC’de çimlenme özelliklerine ilişkin değerler düşmüş ve bu sonuçlar D. sissoo için en uygun çimlenme sıcaklığının 25ºC olduğu şeklinde değerlendirilmiştir

Anahtar Kelimeler

Dalbergia sissoo, sıcaklık, çimlenme

Effect of Temperature on Germination Characteristics of Dalbergia sissoo Seeds

Öz

This study was carried out to determine the effects of temperature on germination characteristics of Dalbergia sissoo (Roxb. ex DC.). Germination tests lasted for 21 days were applied to 4 months old seeds under the germination temperatures of 10ºC, 15ºC, 20ºC, 25ºC and 30ºC and observations and measurements were performed on germination percentage, germination energy, germination index, mean germination time, root and stem length and root and stem dried weight. Results indicated that germination temperatures had significant effect on the most of germination characteristics and no germination was observed at 10ºC. Maximum values of investigated germination characteristics and shortest germination time were recorded for the seeds germinated at 25ºC, which followed by the seeds germinated at 30ºC. Observed values of germination characteristics at 15 and 20ºC decreased and these results were interpreted that the best germination temperature for D. sissoo seeds was 25ºC.

Anahtar Kelimeler

Dalbergia sissoo, temperature, germination

Kaynakça

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