Doğu kayını (Fagus orientalis Lipsky) tohumlarının katlama işleminden sonra saklanması

Bu çalışmada üç orijin üzerinden Doğu kayını tohumlarının katlama işlemi sonrası geri kurutularak -6 °C’de 1 yıl süreyle saklanabilirliği araştırılmıştır. Katlama işleminden sonra saklanan tohumlarda belirgin bir çimlenme kaybı meydana gelmiştir. Saklama işlemi öncesinde katlama süresinin uzatılması tohumları kurumaya karşı daha duyarlı duruma getirmiş ve tohumların çimlenme yetenekleri daha da düşmüştür. Bundan dolayı, katlama+saklama işlemi uygulanacak tohumlar gerekli katlama süresinden (10-12 hafta, orijinlere göre değişmekte) 3-4 hafta daha az (7-9 hafta) katlandıktan sonra saklanmalı ve geriye kalan 3-4 haftalık katlama işlemi saklama işleminden sonra yapılmalıdır. Katlama işleminden sonra tohumların % 6 nem içeriği ile saklanması sonucunda çimlenme oranlarında büyük düşüşler olduğundan % 8 nemin altına inilmemelidir.

Anahtar Kelimeler:

depolama, Fagus orientalis, orman ağaçları, çimlenme, nem, sert kabuklu meyveler, soğuklama

Storage of oriental beechnuts (Fagus orientalis Lipsky) after the prechilling treatment

In this study, the storability of Oriental beechnuts after the prechilling treatment were researched. The beechnuts from three provenances were stored at -6 °C for one year. Significant germination decrease observed in the stored beechnuts after the prechilling treatment. Lengthening of prechilling duration before the storage made the beechnuts more sensitive to desiccation and germination ability of beechnuts dropped greatly. Therefore, the beechnuts to be stored after the prechilling treatment should be prechilled 3-4 weeks less (7-9 weeks) than necessary prehilling duration (10-12 weeks, depending on the provenances). Remaining prechilling duration (3-4 weeks) should be applied after the storage. The moisture content of beechnuts during the storage after the prechilling treatment shouldn’t be less than 8 % since the stored beechnuts with 6 % moisture content after the prechilling treatment demonstrated large decrease in the germination percentage.

Keywords:

storage, Fagus orientalis, forest trees, germination, moisture, nuts, chilling,

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