A pathway to break seed dormancy of endemic Nigella turcica Dönmez & Mutlu Ranunculaceae : GA3 and KNO3

Abstract

Nigella turcica Dönmez & Mutlu Ranunculaceae is a narrow endemic species and closest relative is N. sativa black cumin has an economic importance. In this study, optimum conditions of seed germination was searched for N. turcica. Germination did not occur during 45 days either 4 or 16°C. Potassium nitrate and giberellic asid GA3 with 10 and 25 ppm concentrations were ineffective in embro growth. Optimal conditions to seed germination of N. turcica have been determined as 100 ppm concentrations of giberellic asid at 16°C.

Keywords

• Dormancy,Germination,Nigella,Ranunculaceae

Endemik Nigella turcica Dönmez & Mutlu Ranunculaceae taksonunun tohum dormansisini kırmada izlenen yol: GA3 and KNO3

Abstract

Nigella turcica Dönmez & Mutlu Ranunculaceae dar yayılışlı endemik bir türdür ve ekonomik öneme sahip N. sativa çörek otu türüne en yakın taksondur. Bu çalışmada bu türe ait tohum çimlenmesi için gerekli en uygun koşullar araştırılmıştır. Çimlenme 4 veya 16°C’de 45 gün süresince gerçekleşmemiştir. 10 ve 25 ppm potasyum nitrat ve giberellik asit GA3 uygulamaları da embriyo üzerinde etkili olmamıştır. Çimlenmenin sağlanabilmesi için en uygun koşullar 100 ppm giberellik asit derişiminde ve 16°C sıcaklıkta elde edilmiştir

Keywords

• Çimlenme, Dormansi, Nigella, Ranunculaceae.

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