Tohum Kalitesindeki Farklılıkların Hıyar Tohumlarının Çimlenme, Çıkış ve Sonrası Fide Gelişimine Etkisi

Öz

Tohum kalitesinde yaşlandırma ya da KNO₃ uygulaması ile oluşturulan farklılıkların hıyar tohumlarının çimlenme, çıkış ve fide gelişmesi üzerine etkileri araştırılmıştır. Kalitedeki farklılıklar %3’lük KNO₃ uygulaması (5 gün, 24℃), KNO₃ uygulaması sonrası yaşlandırma (50℃, 1 gün, %9-10 nem) ve sadece yaşlandırmayla (50℃, 1 gün, %9-10 nem) meydana getirilmiştir. Kontrol tohumları ise hiçbir uygulama yapılmayanlardır. KNO₃ uygulaması toplam (kökçüğün 2 mm olduğu) ve normal çimlenme (gelişmiş kök ve sürgüne sahip) oranını (%), kök uzunluğunu (cm), çıkış oranını (%) ve çıkış hızını (gün) arttırmıştır. KNO₃ uygulaması sonrası yaşlandırılan tohumlar, uygulama yapılmadan yaşlandırılan ve kontrol tohumlarına göre daha iyi sonuçlar vermiştir. Hıyar tohumlarında KNO₃ uygulaması ve yaşlandırma ile oluşturulan kalite farklılıklarının en önemli etkisi çimlenme oranı ve çıkış hızına olmuştur. Uygulamaların, fide gelişimi üzerine etkileri arasında farklılık gözlenmemiştir.

Anahtar Kelimeler

• Tohum
• Hıyar
• Çimlenme
• Fide Gelişimi

The Effects of Seed Quality on Germination, Emergence and Subsequent Seedling Development in Cucumber (Cucumis sativus L.)

Öz

The effects of differences in seed quality resulting from priming or deterioration on germination, emergence and seedling growth were investigated in cucumber (Cucumis sativus L. Çengelköy) seeds. Seed quality differences were created through priming, priming and ageing, or ageing (50℃, 1 d, %9-10). Priming (KNO₃, %3, 5 d, 24℃) increased total, normal germination (%), root length (cm) emergence (%) and rapidity of emergence (day). Even, primed and aged seeds had showed better performance than aged and control seeds. Priming not only improved germination and emergence but also repaired ageing. The most important effect of seed quality was on the initial rate of germination and emergence. Subsequent seedling growth rate following emergence was not different among treated, treated and aged, only aged and untreated seeds. The earlier seeds emerged; the bigger seedlings formed.

Anahtar Kelimeler

• Seed
• Cucumber
• Germination
• Seedling Development

Kaynakça

1. Alvarado, A.D., K.J. Bradford and J.D. Hewitt, 1987. Osmotic Priming of Tomato Seeds: Effects on Germination. Field emergence, Seedling Growth and Fruit Yield. J. Amer. Soc. Hort. Sci. 112(3):427-432.
2. Anonymous, 1985. International rules for Seed Testing. Seed Science and Technology 13: 356-513.
3. Bradford, K.J., C.A. Argerich, P. Dahal, O. Somasco, A. Torguis and G.E. Welbaum, 1988. Seed Enhancement and Seed Vigor. Proceedings of The International Conference on Stand Establishment for Horticultural Crops. April 27-29.
4. Brocklehurst, P.A. and J. Dearman, 1983-a. Interactions Between Seed Priming Treatments and Nine Seed lots of Carrot, Celery and Onion. I. Laboratory Germination. Annals of Applied Biology 102: 577-584.
5. Brocklehurst, P.A. and J. Dearman, 1983-b. Interactions Between Seed Priming Treatments and Nine Seed lots of Carrot, Celery and Onion. II. Seedling Emergence and Plant Growth. Annals of Applied Biology 102:585-593.
6. Dell’aquilla, A. and V. Tritto, 1990. Ageing and Osmotic Priming in Wheat Seeds: Effects Upon Certain Components of Seed Quality. Annals of Botany 65:21-26.
7. Dearman, J., P.A. Brocklehurst and R.L.K. Drew, 1986. Effects of Osmotic Priming and Ageing on Onion Seed Germination. Annals of Applied Biology 108:639-648.
8. Dearman, J., P.A. Brocklehurst and R.L.K. Drew, 1987. Effects of Osmotic Priming and Ageing on The Germination and Emergence of Carrot and Leek Seed. Annals of Applied Biology 111:717-722.

9. Demir, I., 1991. Changes in Seed Quality During Seed Development in Pepper, Tomato and Marrow. (Ph.D. Thesis) Reading University. England.
10. Demir, I. and R.H. Ellis, 1992. Development of Pepper Seed Quality. Annals of Applied Biology 121:385-399.
11. Ellis, R.H., 1989. The Effects of Different in Seed Quality Resulting from Priming of Deterioration on The Relative Growth Rate of Onion Seedlings. Acta Horticulturae 253:203-212.
12. Ellis, R.H., 1992. Seed and Seedling Vigour in Relation to Crop Growth and Yield. Plant Growth Regulation 11:249-255.
13. Ellis, R.H. and E.H. Roberts, 1980. Towards a Rational Basis for Testing Seed Quality. Seed Production (Ed: P.D. Hebblethwaite) Butterworths London. pp:605-635.
14. Finch-Savage, W.E., 1984. Effects of Fluid Drilling Germination Onion Seeds on Seedling Emergence and Subsequent Plant Growth. Journal of Agricultural Science 102:461-468.
15. Gomez, K.A. and A.A. Gomez, 1984. Statistical Procedures for Agricultural Research Second Edition. An International Rice Research Institute Book. Copyright by John Willey and Sons. Inc. USA.
16. Heydecker, W. and P. Coolbear, 1977. Seed Treatments for Improved Performance-Survey and Attempted Prognosis. Seed Science and Technology 5:353-425.
17. Smith, O.E., N.C. Welch and O.D. Mc Coy, 1973. Studies on Lettuce Seed Quality: 2. Relationship of Seed Vigor to Emergence, Seedling Weight and Yield. J. Amer. Soc. Hort. Sci. 98:552-556.
18. Thanos, C.A., K. Georghiou and H.C. Passam, 1989. Osmo conditioning and Ageing of Pepper Seeds During Storage. Annals of Botany 63:65-69.
19. Tuuly, T.J., M.B. McDonald and J.E. Beverlein, 1986. Seed Quality Effects on Soybean Plant Performance under Conventional and Ridge Tillage. Seed Science and Technology 14:657-668.
20. Wheeler, T.R. and R.H. Ellis, 1991. Seed Quality, Cotyledon Elongation at Suboptimal Temperatures, and The Yield on Onion. Seed Science Research 1:57-67.