Mitigating Salinity Stress in Cotton (Gossypium hirsutum L.) with K-humate and Iron Oxide Nanoparticles

Year 2024, , 1275 - 1283, 12.10.2024

Hatice Kübra Gören , Öner Canavar , Uğur Tan

https://doi.org/10.30910/turkjans.1511172

Abstract

Tuzluluk stresi, bitki büyümesi ve gelişimi için büyük bir zorluk oluşturur; ozmotik stres, iyon toksisitesi ve besin dengesizlikleri gibi sorunlara ve sorunlar fotosentezin azalmasına ve bitkilerin erken yaşlanmasına neden olur. Bu çalışmada, potasyum humat (Kh) ve demir oksit nanopartiküllerinin (Fe (II,III) oksit pamuk bitkilerinin (Gossypium hirsitum L.) tuzlu koşullarla başa çıkmasına yardımcı olma potansiyelini araştırıldı. Bitki boyu, yaprak sayısı, yaprak ve köklerin taze ve kuru ağırlıkları, yaprak alanı, klorofil içeriği (SPAD değerleri) ve bağıl su içeriği (RWC) gibi çeşitli büyüme parametreler incelendi. Bulgular tuzluluk stresinin bitki boyunu, yaprak sayısını, taze yaprak ağırlığını, kuru yaprak ağırlığını, yaprak alanını ve RWC'yi önemli ölçüde azalttığını gösterdi. Ancak Fe (II,III) oksit'lerin ve Kh'nin uygulanması bu olumsuz etkilerin azaltılmasına yardımcı oldu. Özellikle Fe (II,III) oxide-NP'ler ve Kh kombinasyonu, tuzlu koşullar altında en yüksek bitki boyu saptandı. Tek başına Kh, stres altında bile yaprak sayısını ve taze yaprak ağırlığını arttırmada özellikle etkiliydi. Sonuç olarak, hem Fe (II,III) oxide'lerin hem de Kh'nin, pamuk bitkisinin tuzluluk stresine karşı direncini arttırmada etkili olduğu kanıtlandı ve bunların tuzlu ve kurak bölgelerde sürdürülebilir tarımda potansiyel kullanımlarının altı çizildi. Bu bilgiler, zorlu çevresel koşullar altında bitki büyümesini ve verimini artırmaya yönelik stratejiler geliştirmeye yardımcı olabilir.

Keywords

Nanopartiküller, demir oksit, potasyum humat, SPAD, Gossypium hirsutum L.

Mitigating Salinity Stress in Cotton (Gossypium hirsutum L.) with K-humate and Iron Oxide Nanoparticles

Abstract

Salinity stress poses a major challenge to plant growth and development, causing problems like osmotic stress, ion toxicity, and nutrient imbalances. These issues lead to reduced photosynthesis and early aging of plants. In this study, we explored the potential of potassium humate (Kh) and iron oxide nanoparticles (Fe (II,III) oxide-NPs) to help cotton plants (Gossypium hirsitum L.) cope with saline conditions. We examined various growth parameters such as plant height, leaf number, fresh and dry weights of leaves and roots, leaf area, chlorophyll content (SPAD values), and relative water content (RWC). Our findings showed that salinity stress significantly decreased plant height, leaf number, fresh leaf weight, dry leaf weight, leaf area, and RWC. However, the application of Fe (II,III) oxide-NPs and Kh helped mitigate these negative effects. Notably, the combination of Fe (II,III) oxide-NPs and Kh resulted in the highest plant height under saline conditions. Kh alone was particularly effective in increasing leaf number and fresh leaf weight, even under stress. In conclusion, both Fe (II,III) oxide NPs and Kh proved to be effective in enhancing cotton plant resilience to salinity stress, highlighting their potential use in sustainable agriculture in saline and arid regions. These insights can help develop strategies to improve plant growth and yield under challenging environmental conditions.

Keywords

Nanoparticles, iron oxide, potassium humate, SPAD, Gossypium hirsutum L.

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