EFFECTS OF SOME PRE-SOWING TREATMENTS ON GERMINATION OF COMMON SOUR ORANGE ROOTSTOCKS

Abstract

In this research, effects of some presowing treatments on germination of Common sour orange (Citrus aurantium L.) rootstock which is commercially used for seedling production in our country were investigated. For this purpose two different presowing treatments were done to coat removed and unremoved seeds. In first treatment seeds were dipped in to 35 0C hot water for 2, 4 and 8 days duration. In the second treatment priming application were done at 2 % KNO3 solution for 4, 8 and 12 days duration. At Common sour orange seeds the highest germination rates were obtained from priming application at KNO3 solution for 4 days and unremoved control treatments. In this application, coat removing didn’t effect the germination. In common sour orange rootstock coat removing treatment induced the germination speed of the seeds. With this research, it is revealed that, seed coat removing and osmotic priming applications can be used for inducing germination rates of citrus.

Keywords

• Citrus; Rootstock; Germination; Priming; KNO3

YERLİ TURUNÇ ANACINDA EKİM ÖNCESİ BAZI UYGULAMALARIN ÇİMLENME ÜZERİNE ETKİLERİ

Abstract

Bu çalışmada, Ülkemizde ticari olarak fidan üretiminde kullanılan Yerli turunç (Citrus aurantium L.) anacının çimlenme özelliklerinin geliştirilmesi için ekim öncesi bazı uygulamaların etkileri incelenmiştir. Bu amaçla tohum kabuğu soyulmuş ve soyulmamış Yerli turunç tohumlarına ekim öncesi iki farklı uygulama yapılmıştır. Birinci uygulamada tohumlar, 2, 4, 8 gün süreyle 350C de sıcak suda bekletilmiştir. İkinci uygulamada ise; 4, 8 ve 12 gün süreyle % 2 KNO3 içeren solüsyonda priming uygulaması yapılmıştır. Yerli turunç tohumlarında en yüksek çimlenme oranı 4 gün süre ile KNO3 içeren solüsyonda priming uygulaması ile beraber kontrol uygulamasında bulunurken; tohum kabuğunun soyulmasının etkili olmadığı görülmüştür. Yerli turunç anacının tohumlarında kabuk soyma uygulamasının tohumların çimlenme hızını artırdığı bulunmuştur. Bu çalışma ile turunçgillerde tohumların çimlenme oranlarının artırılmasında tohum kabuğu soyma ile birlikte osmotik priming uygulamasının kullanılabileceği ortaya konulmuştur.

Keywords

• Turunçgil; Anaç; Çimlenme; Priming; KNO3

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