Evaluation of Morphological and Physiological Traits of Maize Genotypes under Drought Stress Conditions

Nader Azizi; Soudabeh Jahanbakhsh; Salim Farzaneh; Emre Kara; Saeid Heydarzadeh; Mustafa Sürmen

doi:10.18016/ksutarimdoga.vi.1618522

EN TR

Evaluation of Morphological and Physiological Traits of Maize Genotypes under Drought Stress Conditions

Abstract

The purpose of the research was to determine drought-tolerant genotypes, as well as examine and contrast their responses under normal and severe drought conditions. The investigation was applied in a factorial form based on a Randomised Complete Design (RCD) with seven maize genotypes (KSC201, KSC704, KSC705, KSC706, KSC7158, KSC647, and TWC647) and drought stress at three levels (0, 2, 4, and 8 bar) in three replicates. The study revealed that the most plant height, total dry weight, and root dry weight (33.64, 2.29, and 0.83 g plant-1) were recorded in genotype KSC7158 in no-plants stress, respectively. A severe drought reduced the amount of chlorophyll and relative water content. The cultivar of KSC7158 had the most total chlorophyll and relative water content. The crop's total soluble sugar and proline concentration were increased in 8-bar conditions. The KSC647 genotype had the highest proline content, whereas the KC7158 genotype had the highest total soluble sugar. The reactions of catalase, ascorbate peroxidase, and polyphenol oxidase increased in 8-bar conditions, with the genotypes of KSC7158 and KSC706 showing the highest enzyme activity. Furthermore, KSC7158, KSC706, and KSC201 hybrids exhibited superior growth parameters under both normal and severe drought conditions, in comparison to other hybrids. In terms of every trait examined under severe drought, the KSC7158 hybrid was found to be tolerant.

Keywords

Kuraklık Stresi Şartlarında Mısır Genotiplerinin Morfolojik ve Fizyolojik Özelliklerinin Değerlendirilmesi

Öz

Bu çalışma, normal koşullar ve kuraklık stresi altında mısır genotiplerinin tepkilerini değerlendirmek ve kuraklığa dayanıklı genotipleri karşılaştırmalı olarak belirlemek amacıyla gerçekleştirilmiştir. Deneme, yedi mısır genotipi (KSC201, KSC704, KSC705, KSC706, KSC7158, KSC647, TWC647) ve üç seviyede (0, 2, 4 ve 8 bar) kuraklık stresi ile üç tekrarlamalı olarak tesadüf blokları deneme desenine dayalı faktöriyel düzende yürütülmüştür. Araştırma sonucunda, bitki boyu, toplam kuru madde ve kök kuru ağırlığı bakımından en yüksek değerlerin sırasıyla 33,64 cm, 2,29 ve 0,83 g bitki-1 ile stres uygulanmayan koşullarda KSC7158 genotipinde gözlendiği belirlenmiştir. Şiddetli kuraklık koşulları, klorofil içeriği ile göreli su içeriğinde azalmaya neden olmuştur. KSC7158 genotipi, en yüksek toplam klorofil ve göreli su içeriğine sahip olmuştur. Kuraklık şiddeti 8 bar’a ulaştığında, bitkilerde toplam çözünür şeker ve prolin konsantrasyonu artmıştır. En yüksek prolin içeriği KSC647 genotipinde, en yüksek toplam çözünür şeker ise KSC7158 genotipinde tespit edilmiştir. Ayrıca, 8 bar kuraklık stresinde katalaz, askorbat peroksidaz ve polifenol oksidaz enzim aktivitelerinde artış kaydedilmiş; KSC7158 ve KSC706 genotipleri bu enzimler açısından en yüksek aktivite düzeylerini sergilemiştir. KSC7158, KSC706 ve KSC201 hibritleri hem normal hem de şiddetli kuraklık koşullarında üstün büyüme performansı göstermiştir. Özellikle KSC7158 hibriti, incelenen tüm özellikler bakımından şiddetli kuraklık koşullarında en dayanıklı genotip olarak belirlenmiştir.

Anahtar Kelimeler

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Details

Primary Language

English

Subjects

Pasture-Meadow Forage Plants

Journal Section

Research Article

Authors

Nader Azizi
0009-0003-2242-3717
Iran

Soudabeh Jahanbakhsh
0000-0002-8338-1069
Iran

Salim Farzaneh
0000-0003-1695-5592
Iran

Emre Kara ^*
0000-0002-5535-8398
Türkiye

Saeid Heydarzadeh
0000-0001-6051-7587
Iran

Mustafa Sürmen
0000-0001-9748-618X
Türkiye

Early Pub Date

August 14, 2025

Publication Date

October 20, 2025

Submission Date

January 12, 2025

Acceptance Date

July 25, 2025

Published in Issue

Year 2025 Volume: 28 Number: 6

DOI

https://doi.org/10.18016/ksutarimdoga.vi.1618522

IZ

https://izlik.org/JA35EG55RM

Cite

RIS / Bibtex

APA

Azizi, N., Jahanbakhsh, S., Farzaneh, S., Kara, E., Heydarzadeh, S., & Sürmen, M. (2025). Evaluation of Morphological and Physiological Traits of Maize Genotypes under Drought Stress Conditions. Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi, 28(6), 1458-1470. https://doi.org/10.18016/ksutarimdoga.vi.1618522