Longevity of Cabbage, Leek and Marrow Seeds in Relation to Storage at Ambient Regional Storage Temperatures with Various Seed Moisture Contents

This study was conducted to test the longevity of cabbage, leek and marrow seeds at various ambienttemperatures that mimic the monthly mean temperatures in five different regions (Aegean-Mediterranean,south-eastern Turkey, Black Sea, Marmara and Central Anatolia) over 28 months. Seed moisture contents were7, 8, 9, 10, 11 and 12±0.3% in hermetic aluminium packets. Samples were taken every 4 months and survivalcurves were analysed by using probit analyses. P50, the time for seed viability decline to 50%, was determinedbased on each seed moisture and different regional temperatures for each species after probit analyses. Seedlongevity was shortest in south-eastern region and the seed moisture was 12% for all species. While leek wasthe most resilient species, marrow was the most sensitive. Results indicate that the longevity of seeds stored inAegean-Mediterranean and south-eastern regions is shorter than in other regions, especially for seed moistureabove 7%. However, ambient storage conditions in Black Sea, Central Anatolia and Marmara regions appearedto be relatively better

Lahana, Pırasa ve Kabakta Tohum Depo Ömrünün Tohumların Farklı Bölgelerin Aylık Ortalama Sıcaklıklarında ve Tohum Nemlerinde Depolanmasıyla İlişkisi

Bu çalışmanın amacı lahana pırasa ve kabak tohumlarının Türkiye’nin 5 farklı bölgesindeki (Ege-Akdeniz, Güney Doğu, Karadeniz, Marmara ve Orta Anadolu) aylık ortalama sıcaklıklarda tohumların 5 farklı nem de 28 ay depolanmasıyla depo ömürlerindeki değişimi incelemektir. Depoda tohum nemi %7, 8, 9, 10, 11 ve 12±0.3 düzeyinde ve hermetik koşullarda yapılmıştır. Tohum örnekleri 4 ayda bir alınmış ve çimlenme testleri sonrası elde edilen yaşam eğrileri probit analiziyle analiz edilmiştir. Her türde, bölgede ve nemde P50, canlılığın yarılandığı zaman hesaplanmıştır. Depo ömrü bütün türlerde %12 nemde ve Güney Doğu Anadolu bölgesi’nde en kısa olarak gerçekleşmiştir. Kabak türler içinde en hassas, pırasa en dirençli tür olarak gözlenmiştir. Sonuçlar Ege-Akdeniz ve Güney Doğu Anadolu Bölgeleri’nde depolanan tohumların depo ömürlerinin diğer bölgelerden daha kısa olduğunu göstermiştir (özellikle %7 üzerindeki tohum neminde). Buna karşın Karadeniz, Orta Anadolu ve Marmara Bölge koşulları nispeten daha iyi görünüyordu.

Kaynakça

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