The Effects of Some Dormancy Breaking Treatments and Temperature on Seed Vigor of Gum Tragacanth (Astragalus gummifer Labill.)

Yıl 2022, Cilt: 32 Sayı: 2, 266 - 279, 30.06.2022

Gülüm Gürel Bilal Keskin , Süleyman Temel

https://doi.org/10.29133/yyutbd.1026792

Cited By: 1

Öz

This research was carried out to determine the effects of germination temperature and 12 dormancy breaking applications on the germination of the seeds of the gum tragacanth (Astragalus gummifer Labill.) bush. The research was carried out in the Field Crops Department laboratory, Iğdır University Faculty of Agriculture, in 2019. Gum tragacanth seeds were germinated for 28 days in the dark at constant temperatures of 10, 15, 20, and 25 °C and variable temperatures of 20/10 °C, 20/15 °C, 25/10 °C, and 25/15 °C. As a result of the research, the highest total germination rate was determined at 10.7% at 25/10 °C and 25/15 °C temperatures. It was determined that there was 89.3% dormancy in gum tragacanth seeds. Then, 12 dormancy breaking methods (matrix priming, hydro priming, gibberellic acid (GA3, potassium nitrate, cold, moist stratification, warm moist stratification, warm+cold moist stratification, cold+warm moist stratification, cold water, hot water, mechanical scarification, and chemical scarification) were applied. After dormancy breaking applications were made, the seeds were germinated again at 25/15 °C. At the end of the study, it was revealed that the highest total germination percentage with 50.7% was obtained from the application of hot water for 2 minutes. On the other hand, it was determined that matric priming, hydro priming, gibberellic acid, potassium nitrate, cold, moist stratification, warm moist stratification, cold+warm moist stratification, mechanical scarification, and chemical scarification applications did not have any effect on removing the dormancy status of gum tragacanth seeds.

Anahtar Kelimeler

Astragalus gummifer, Dormancy breaking, Germination, Seed dormancy, Temperature

Destekleyen Kurum

Iğdır Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimi

Proje Numarası

2019-FBE-L07

Teşekkür

This research was carried out with the support of Iğdır University Scientific Research Projects Coordination Unit as project numbered 2019-FBE-L07.

Bazı Dormansi Kırma Uygulamalarının ve Sıcaklığın Sakız Geveni’nin (Astragalus gummifer Labill.) Tohum Canlılığı Üzerine Etkileri

Öz

Bu araştırma, sakız geveni (Astragalus gummifer labill.) çalısının tohumlarının çimlenmesine çimlenme sıcaklığı ve 12 dormansi kırma uygulamasının etkilerini belirlemek amacıyla yapılmıştır. Araştırma 2019 yılında Iğdır Üniversitesi Ziraat Fakültesi Tarla Bitkileri Anabilim Dalı laboratuvarında gerçekleştirilmiştir. Sakız geveni tohumları karanlıkta 10, 15, 20 ve 25 °C sabit ve 20/10 °C, 20/15 °C, 25/10 °C ve 25/15 °C değişken sıcaklıklarda 28 gün süreyle çimlendirilmiştir.. Araştırma sonucunda en yüksek toplam çimlenme oranı %10,7 ile 25/10 °C ve 25/15 °C sıcaklıklarda tespit edilmiştir. Astragalus gummifer tohumlarında %89.3 dormansi olduğu belirlendi. Daha sonra 12 dormansi kırma yöntemi (matris priming, hidro priming, giberellik asit (GA3)), potasyum nitrat, soğuk nemli katlama, ılık katlama, sıcak+soğuk nemli katlama, soğuk+ılık nemli katlama, soğuk su, sıcak su, mekanik aşındırma ve kimyasal aşındırma) uygulandı. Dormansi kırma uygulamaları yapıldıktan sonra tohumlar tekrar 25/15 °C'de çimlendirilmiştir. Çalışma sonunda en yüksek toplam çimlenme yüzdesinin %50,7 ile 2 dakika sıcak su uygulamasından elde edildiği ortaya çıkmıştır. Öte yandan, matris priming, hidro priming, giberellik asit, potasyum nitrat, soğuk nemli katlama, ılık nemli katlama, soğuk+ılık nemli katlama, mekanik aşındırma ve kimyasal aşındırma uygulamalarının dormansinin giderilmesinde etkisinin olmadığı belirlendi.

Anahtar Kelimeler

Astragalus gummifer, Dormansi kırma, Çimlenme, Tohum dormansi, Sıcaklık

Proje Numarası

2019-FBE-L07

Kaynakça

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