Changes in Germination of Flower Seeds After 16 Years in Cold Storage

Yıl 2024, Cilt: 20 Sayı: Özel Sayı, 71 - 82, 23.12.2024

Tuba Gülöksüz , Ahmet Hakan Eker , Serpil Mis , İbrahim Demir

https://doi.org/10.58816/duzceod.1540093

Öz

This study was carried out to test the changes in germination percentages of the seeds of 11 flower species kept hermetically sealed in cold storage (5 °C, 6.7-7.6 % seed moisture) for 16 years. Pelargoniums, tagetes, zinnias, petunias and gazanias were found to be the most resilient species, in which seed germination was reduced between 0 and 3% following storage compared to initial germination values. Dahlias, salvia and verbena were medium tolerant species, as they lost germination at between 22 and 30%. The most sensitive species were antirrhinum, viola and impatiens, which had a germination loss as high as 94%. As vigour indication, 7th day radicle counts showed that the more resilient species had higher earlier germination values. Comparison of the storage of hybrid and open-pollinated cultivars made in two species, Pelargonium and viola, indicated that germination was not lost in pelargonium hybrids, but germination loss was higher than 77% in both open pollinated and hybrid seed types of viola. The results indicated that seed storage potential in flowers was greatly affected by species differences and should be taken into account for plant production practices.

Anahtar Kelimeler

Flower seeds, Germination, Storage

Çiçek Tohumlarında 16 Yıllık Soğuk Depolama Sonrası Çimlenmedeki Değişimler

Öz

Bu çalışma 11 adet farklı çiçek türü tohumunun5 C’de % 6.7 ile 7.6 tohum neminde 16 yıl boyunca hermetik şekilde depolanması sonucu çimlenme oranlarındaki değişimi test etmek için yürütülmüştür. Sardunya, kadife, kirli hanım, petunya ve koyun gözü türleri depolamaya en dirençli türler olarak ve bu türlerde çimlenme başlangıç yüzdelerine göre sadece %0-3 arasında değişmiştir. Yıldız çiçeği, ateş çiçeği ve mine çiçeği tohumları orta düzeyde dirençli türler olarak saptanmış ve çimlenmedeki canlılık kaybı %22 ile 30 arasında değişmiştir. En hassas türler olarak aslanağzı, camgüzeli ve menekşe saptanmış olup bu türlerde çimlenme kaybı başlangıç canlılığına göre %94’e kadar ulaşmıştır. Tohum gücündeki değişim olarak 7. gün çimlenme değerleri saptanmış ve depolamaya dirençli olan türler bu sayımda da yüksek değerler vermiştir. Hibrit ve açık tozlanan çeşitler menekşe ve sardunyada karşılaştırılmıştır. Sardunyada hibrit tohumlar depolamada canlılıklarını hiç kaybetmezken menekşede hem hibrit hem de açık tozlananlarda canlılık kaybı %77’ye kadar çıkmıştır. Sonuçlar çiçek tohumlarının türler bazında depolamaya dirençliliklerinin farklı olduğunu ve bunun bitki üretiminde dikkate alınması gerektiği sonucunu göstermektedir.

Anahtar Kelimeler

Çiçek tohumları, Çimlenme, Depolama

Kaynakça

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