Fazilet PARLAKOVA KARAGÖZ, Atilla DURSUN, Recep KOTAN, Melek EKİNCİ, Ertan YILDIRIM, Parisa MOHAMMADİ

Bazı Bakteri İzolatları ve Hormon Uygulamalarının Safran Crocus sativus L. Bitkisinde Korm Oluşumu ve Kimi Bitki Özelliklerine Etkisi

Safran, süsengiller Iridaceae familyasından ve sonbaharda çiçek açan, soğanlı bitkilerden biridir. Ekonomik değeri yüksek, tıbbı ve aromatik bitkilerden biri olan bu bitkinin üretiminin geliştirilmesinde en büyük engel tohumluk olarak kullanılan soğanların yetersizliğidir. Safran bitkisinin kormlarının çoğalmasında mikrobiyal gübre olarak azot fiksasyonu yapabilme, fosfatı çözebilme ve hormon IAA, GA3 üretebilme özelliğine sahip bakteri izolatlarının kullanımı hedeflenmiştir. Böylece, nesli tehlike altında olan türlerden olan safranın yok olması önlenebilir ve bir süs bitkisi olarak üretiminin yaygınlaştırılmasıyla türlerin devamı sağlanabilir. Bu çalışmada, toplam on uygulama 1 Achromobacter xylosoxidans strain TV-42A, 2 Brevibacillus choshinensis strain TV-53D, 3 Myroides odoratus strain TV-85C, 4 Bacillus megaterium strain TV-87A, 5 Colwellia psycrerytreae strain TV-108G, 6 Kluyvera cryocrescens strain TV113C and 7 Bacillus GC group B strain TV119E, 8 Kontrol bakteri ve hormon uygulamasız 9 Kontrol 2 [100 mg L-1 IBA indole-3 butyric acid ] ve 10 Kontrol 3 [100 mg L-1 GA3 gibberellic acid ] safranın bitki büyüme ve gelişim parametreleri üzerindeki etkilerini belirlemek için test edilmiştir. Sera koşullarında, yavru korm sayısı, yavru korm çapı mm , yavru korm uzunluğu mm , yavru korm ağırlığı g ve kormların makro ve mikro N, K, P, Mg, S, Ca, Na, Fe, Mn, Zn, Cu, Pb, B ve Cd besin içerikleri belirlenmiştir. Safranın büyüme ve verim değerleri, bakteri uygulamalarının bazılarında hormon uygulamalarından daha yüksek veya eşit şekilde elde edilmiştir. Organik tarımda kullanılan biyogübrelerin, safranın bitki büyüme ve gelişimini artırması üzerine olumlu bir etkiye sahip olduğu sonucuna varılmıştır

Anahtar Kelimeler:

PGPR, GA3, IBA, Safran, Yavru korm

Assessment of the Effects of Some Bacterial Isolates and Hormones on Corm Formation and Some Plant Properties in Saffron Crocus sativus L.

The saffron, from the Iridaceae family and an autumn-flowering geophytes, is one of cormous plants. The biggest obstacle in the development of this plant, production having the most economic value as one of the medicinal and aromatic plants, is the insufficient bulbous used for propagation. Bacterial isolates showing capacity to grow in nitrogen-free conditions, for hormones production IAA, GA3 and to solubilise phosphate as microbial fertilizer were used to reproduce the corms of saffron plants. Thus, the disappearance of saffron from the species that are under threat of extinction can be prevented and the continuation of the species can be provided by its widespread propagation as an ornamental plant. In this study, a total of ten treatments; 1 Achromobacter xylosoxidans strain TV-42A, 2 Brevibacillus choshinensis strain TV-53D, 3 Myroides odoratus strain TV-85C, 4 Bacillus megaterium strain TV-87A, 5 Colwellia psycrerytreae strain TV-108G, 6 Kluyvera cryocrescens strain TV-113C and 7 Bacillus GC group B strain TV119E, 8 Control untreated bacteria or hormones 9 Control 2 [100 mg L-1 IBA indole-3 butyric acid ] and 10 Control 3 [100 mg L-1GA3 gibberellic acid ] were tested to see their effects on the plant growth and development parameters of saffron. The number of cormlet, average cormlet diameter mm , cormlet length mm , cormlet weight g , macro and micro plant nutrients N, K, P, Mg, S, Ca, Na, Fe, Mn, Zn, Cu, Pb, B and Cd contents of corms were determined in greenhouse assays. Some of the bacterial applications gave growth and yields of saffron equal to or higher than the hormones applied. Bio-fertilizers used in organic farming, increase in plant growth and development of saffron were concluded to have positive effect

Keywords:

PGPR, GA3, IBA, Saffron, Cormlet,

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