L-Triptofan ve Melatonin’in Düşük ve Yüksek Sıcaklık Koşullarında Turp ve Ispanağın Tohum Çimlenme Performansına Etkileri

Yıl 2019, Cilt: 5 Sayı: 2, 203 - 211, 13.12.2019

Fatih Hancı , Harun Ünal Ali Arslan

https://doi.org/10.24180/ijaws.570673

Cited By: 1

Öz

Bu çalışmanın amacı L-Triptofan ve Melatonin
uygulamalarının farklı sıcaklık koşullarında turp ve ıspanak tohumlarının
çimlenme özellikleri üzerindeki etkilerini araştırmaktır. Farklı
konsantrasyonlarda L-Triptofan (125, 250, 375 ppm) ve Melatonin (5, 10, 25 µM)
ile muamele edilmiş tohumlar, optimum (21 ˚C), üşüme stresi (7˚C) ve yüksek
sıcaklık (35 ˚C) koşullarında çimlenme testlerine tabi tutulmuştur. Distile su
ile muamele edilmiş tohumlar kontrol olarak kabul edilmiştir. Denenen
hormonlar, düşük sıcaklıkta (7 ˚C) turp tohumlarının ortalama çimlenme süresi,
%50 çimlenme oranına ulaşma süresi ve taze ağırlık sonuçları üzerine önemli
etkiler oluşturmuştur. Bu sıcaklık derecesinde, 10 µM melatonin uygulaması,
ortalama çimlenme süresini ve tohumların %50 çimlenme oranına ulaşma süresini,
hormon uygulanmamış tohumlara göre uzatmıştır. 125 ppm ve 250 ppm L-Triptofan
uygulaması yaş ağırlık değerlerini artırmıştır. Ispanak tohumlarında düşük
sıcaklık koşulunda (7 ˚C) hormon uygulamalarının en büyük etkisi %50 çimlenmeye
ulaşmak için gerekli süre özelliğinde gözlenmiştir. L-Triptofan' ın 375 ppm
dozu bu süreyi kontrole göre kısaltırken, 25 µM melatonin uygulaması ise
uzatmıştır.

Anahtar Kelimeler

L-Triptofan, Melatonin, Çimlenme, Turp, Ispanak

Destekleyen Kurum

Erciyes Üniversitesi

Proje Numarası

FLO-2018-8572

Teşekkür

Bu çalışma Erciyes Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimi tarafından FLO-2018-8572 no’ lu proje kapsamında desteklenmiştir.

Effects of L-Tryptophan and Melatonin on Seed Germination Performance of Radish and Spinach in Low and High Temperature Conditions

Öz

The aim of this study was to evaluate the effects
of L-Tryptophan and Melatonin treatments on germination of radish and spinach
seeds under different temperature conditions. Treated with different
concentrations of L-Tryptophan (125, 250, 375 ppm) and Melatonin (5, 10, 25 µM)
seeds were subjected to germination tests at optimum (21 ˚C) chilling stress (7
˚C) and high temperature (35 ˚C) conditions. Treated with distilled water seeds
were considered as control. The tested hormones had significant effects on the
average germination time; the time to reach 50% germination rate; and the fresh
weight results of the radish seeds at low temperature (7 ˚C) condition. At this
temperature, the treatment of 10 µM melatonin prolonged the mean germination
time and the time to reach 50% germination rate of the seeds compared to the
hormone untreated seeds. 125 ppm and 250 ppm L-Tryptophan treatments increased
the fresh weight values. The greatest effect of the hormone treatment in
spinach seeds was observed in the time to reach 50% germination rate at low
temperature condition (7 ˚C). The 375 ppm dose of L-Tryptophan shortened this it
as compared to the control, while 25 µM melatonin treatments prolonged this
period.  

Anahtar Kelimeler

L-Tryptophan, Melatonin, Germination, Radish, Spinach

Proje Numarası

FLO-2018-8572

Kaynakça

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