Sinan SÜHERİ, İlknur KUTLAR YAYLALI, Duran YAVUZ, Nurcan YAVUZ

The effect of sodium chloride salinity on coated and uncoated alfalfa seeds germination

In this study, a pod experiment was conducted to evaluate the effect of sodium chloride salinity on germination of coated and uncoated seeds of alfalfa seeds under controlled greenhouse conditions at Konya in May 2013. The experimental design was a split-split plot with salinity treatments as main plots, coated and uncoated seeds subplots. Pots were irrigated with tap water (0.3 dS m-1) or (3.0, 6.0 or 9.0 dS m-1). As result of study, seed germination was significantly affected by irrigation water salinity at the initial stage of germination. For coated and uncoated seed, the final seed germination exceeded 79.00% except at the salt concentrations higher than 3.0 dSm-1 where germination percentage statically decreased down. The highest germination rate index (GRI, 14.29%), germination index (GI, 998.75), and coefficient of velocity of germination (CVG, 16.97) values were obtained from the coated seeds irrigated with the tap water while the lowest GRI (1.79%), GI (138.75), and CVG (12.57) values were obtained from the uncoated seeds irrigated with salt concentration of electrical conductivity (EC) of 12.0 dS m-1. Earlier germinations were recorded for coated seeds as indicated by lower value of mean germination time (MGT) and time of 50% germination (T50).

Anahtar Kelimeler:

Medicago sativa, Emergence, Chlorinity, Lime

Sodyum klorür tuzluluğunun kaplamalı ve kaplamasız yonca tohumlarının çimlenmesi üzerine etkisi

Bu çalışma, Mayıs 2013 tarihinde Konya’da kontrollü sera şartlarında sodyum klorür tuzluluğunun kaplanmış ve kaplanmamış yonca tohumları çimlenmesi üzerine etkisinin araştırılması amacıyla yürütülmüştür. Saksı denemesi olarak kurulan deneme, tuzluluk ana muamele, kaplanmış ve kaplanmamış yonca tohumları alt muamele olarak bölünmüş parsel deneme planına göre tasarlanmıştır. Saksılar musluk suyu (0.3 dS m-1) veya elektriksel iletkenlikleri 3.0, 6.0 ve 9.0 dS m-1 olan tuzlu sular ile sulanmıştır. Araştırmanın sonucunda, tuzluluğun çimlenmenin başlangıç aşamasında tohumların çimlenmesini önemli derecede etkilediği, kaplanmış ve kaplanmamış tohumlarda, toplam çimlenme yüzdesinin, 3.0 dS m-1 değerinden daha yüksek tuzluluk seviyeleri hariç olmak üzere %79’un üzerinde olduğu, 3.0 dS m-1 değerinden daha yüksek sulama suyu tuzluluk değerlerinde çimlenmenin istatistiki olarak farklı olduğu, en yüksek çimlenme oran indeksi (%14.29), çimlenme indeksi (998.75), ve çimlenme hızı katsayı (16.97) değerlerinin musluk suyu ile sulanan kaplanmış tohumlardan, en düşük çimlenme oran indeksi (%1.79), çimlenme indeksi (138.75) ve çimlenme hızı katsayısı (12.57) değerlerinin ise elektriksel iletkenliği 12.0 dS m-1 olan suyla sulanan kaplanmamış tohumlardan elde edildiği tespit edilmiştir. Erken çimlenme değerlerinin düşük ortalama çimlenme zamanı (MGT) ve %50 çimlenme zamanı (T50) değerlerinin elde edildiği kaplanmış tohumlarda görüldüğü bulunmuştur.

Keywords:

Medicago sativa, Çıkış, Tuzluluk, Kireç,

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