Ibrahim DEMIR, Kazım MAVI, Zeynep GÖKDAS, Emrah KÖSE

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.

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Arın, L., 2018. Tohum Depolama. TÜRKTOB Dergisi 26, 8-10.

Cromarty, A.S., Ellis, R.H., Roberts, E.H., 1985. Design of seed storage facilities for genetic conservation. International Board for Plant Genetic Resources: Rome.

Demir, I., Ellis, R.H., 1993. Changes in potential seed longevity and seedling growth during seed development and maturation in marrow. Seed Science and Research 3: 247-257.

Demir, I., Okcu, G., 2005. Effect of post-harvest maturation treatment on germination and potential longevity of pepper (Capsicum annuum) seeds. Indian Journal of Agricultural Sciences 75 (1): 19-22.

Demir, I., Ozcoban, M., 2007. Dry and Ultra-dry storage of pepper, aubergine, winter squash, summer squash, bean, cowpea, okra, onion, leek, cabbage, radish, lettuce and melon seeds at -20°C and20°C over five years. Seed Science and Technology 35 (1): 165–175.

Demir, I., Kara, F., Ozden, E., Hassanzadeh, M., 2016a. The effects of seed moisture content and regional storage temperature on the longevity of two onion cultivars. Acta Horticulturae 1143: 341-344.

Demir, I., Ozden, E., Kara, F., Hassanzadeh, M., Mavi, K., 2016b. Effects of ambient storage temperature and seed moisture content on seed longevity of lettuce (Lactuca sativa). American Journal of Experimental Agriculture 12 (3): 1-5.

De Vitis, M., Hay, F.R., Dickie, J.B., Trivedi, C., Choi, J. Fiegener, R., 2020. Seed storage: maintaining seed viability and vigor for restoration use. Restoration Ecology 28(3): 249-255.

Ellis, R.H., 1991. The longevity of seeds. HortScience 26 (9): 1119–1125.

Ellis, R.H., Roberts, E.H., 1981.The quantification of aging and survival in orthodox seeds Seed Science and Technology 9: 373-409.

Harrington, J.F., 1972. Seed storage and longevity. In: Kozlowski TT. ed. Seed biology, Vol. III. New York, NY: Academic Press, 145–245.

Hay, F.R., Mead, A., Bloomberg, M., 2014. Modelling seed germination in response to continuous variables: use and limitations of probit analysis and alternative approaches. Seed Science Research 24:165–186.

Hay, F.R., Valdez, R., Lee, J.S., Sta.Cruz, P.C., 2019. Seed longevity phenotyping: recommendations on research methodology. Journal of Experimental Botany 70:425–434.

ISTA, 2016. International Rules for Seed Testing, International Seed Testing Association, Bassersdorf, Switzerland.

Kranner, I., 2013. Mechanisms of seed ageing. South African Journal of Botany 86:140– 140.

Nagel, M., Borner A., 2012. The longevity of crop seeds stored under ambient conditions. Seed Science Research. 20:1- 12.

Priestley, D.A., Cullinan, V.I., Wolfe, J., 1985. Differences in seed longevity at the species level. Plant, Cell and Environment 8: 557– 562.

Priestley, D.A., 1986. Seed aging. Ithaca, NY: Comstock Publishing Associates .

Pritchard, H.W., Dickie, J.B., 2003. Predicting seed longevity: the use and abuse of seed viability equations. In: Smith RD, Dickie JB, Linington, SH, Pritchard, HW, Probert RJ. eds. Seed conservation: turning science into practice. London: Royal Botanic Gardens, Kew, 655–721.

Probert, R.H., Daws, M.I., Hay, F.R., 2009. Ecological correlates of ex situ seed longevity: a comparative study on 195 species. Annals of Botany 104:57–69.

Probert, R.J., Hay, F.R., 2000. Keeping seeds alive. In ‘Seed technology and its biological basis’. (Eds M Black, D Bewley) pp. 375–410. Sheffield Academic Press: Sheffield, UK.

Roberts, E.H., 1973. Predicting the storage life of seeds. Seed Science and Technology 1: 499–514.

Roberts, E.H., Ellis, R.H., 1989. Water and seed survival. Annals of Botany 63: 39–45.

Walters, C., Wheeler, L.M., Grotenhuis, J.M., 2005. Longevity of seeds stored in a genebank: Species characteristics. Seed Science Research. 15:1-20.