The effects of silicon pre – treatment on physiological and biochemical responses of maize under water deficit

Abstract

The present study was conducted to investigate the effects of silicon (Si) pre – treatment under different irrigation regimes on growth, gas – exchange properties and physiological features of maize in the “Selcuk University, Agriculture Faculty, Field Crops Department, Research and Practicing Station of Prof. Dr. Abdulkadir AKÇIN, Konya, Türkiye” during 2019 and 2020 growing seasons. Irrigations (50%, 75%, 100% of total evaporation from Class A Evaporation Pan), genotypes (purple and white coloured corns) and treatments (control, 1.5mM Si) were the factors of the trial. This study found out that water restriction (I1 and I2) adversely affected maize growth attributes (plant height, leaf number, leaf area) and photosynthetic efficiency (A). However, Si priming significantly improved drought tolerance, largely mitigating these negative effects. Plant height and proline concentration of the silicon – primed purple corn was higher than control under I1 during both years of the experiment. Silicon priming increased photosynthesis rate (46.20%), stomatal conductance (35.47%) and total anthocyanin content (12.80%) of the purple corn during 2019 whilst it increased total anthocyanin content (10.10%) of the white corn during 2020. Besides the healing effects of Si pre – soaking under I1, it had positive impacts on many features under I2 and I3. According to the results of the experiment it may be concluded that Si pre – treatment may be an alternative strategy to increase performance and resilience of maize under water restricted conditions.

Keywords

• anthocyanins
• maize
• physiology
• pre – treatment
• proline

Ethical Statement

This article does not require ethical approval as there are no experiments with human or animal subjects.

Silikon ön – uygulamasının mısırın kısıtlı su koşullarındaki fizyolojik ve biyokimyasal tepkilerine etkisi

Abstract

Bu çalışma 2019 – 2020 yetiştirme sezonlarında mısırda silikon (Si) ön uygulamasının farklı sulama rejimlerinde büyüme, gaz değişim özellikleri ve fizyolojik özellikler üzerindeki etkilerini belirlemek amacıyla “Selçuk Üniversitesi, Ziraat Fakültesi, Tarla Bitkileri Bölümü, Prof. Dr. Abdulkadir AKÇIN Araştırma ve Uygulama İstasyonu, Konya, Türkiye” de yürütülmüştür. Denemede faktör olarak sulamalar (Class A Evaporasyon kabından gerçekleşen buharlaşmanın %50, %75 ve %100’ ü), genotipler (mor ve beyaz renkli mısırlar) ve uygulamalar (kontrol ve 1.5 mM Si) yer almıştır. Bu çalışmada su kısıtlamasının (I1 ve I2) mısırın büyüme parametreleri (bitki boyu, yaprak sayısı ve yaprak alanı) ve fotosentetik verimini (A) önemli ölçüde etkilediği görülmüştür. Ancak Si priming kuraklığa toleransı bu olumsuz etkileri azaltarak önemli ölçüde arttırmıştır. Denemenin iki yılında da I1’ de Si priming yapılmış mor mısırın bitki boyu ve prolin konsantrasyonu kontrolden yüksek olmuştur. Silikon priming, 2019 da mor mısırın fotosentez oranı (%46.20), stoma iletkenliği (%35.47) ve total antosiyanin içeriğini (%12.80), 2020 de ise beyaz mısırın total antosiyanin içeriğini (%10.10) arttırmıştır. Silikon ön uygulamasının I1’ deki olumlu etkilerinin yanında, I2 ve I3 te de çok sayıda özellik üzerinde olumlu etkileri olmuştur. Denemeden elde edilen bulgulara göre Si ön uygulamasının mısırın kısıtlı sulama koşullarında performans ve dayanıklılığını arttıracak alternatif stratejilerden olabileceği sonucuna ulaşılmıştır.

Keywords

• antosiyaninler
• mısır
• fizyoloji
• ön uygulama
• prolin

Ethical Statement

Bu makale insan veya hayvan denekleri üzerinde herhangi bir deney yapılmadığından etik onay gerektirmez.

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