Impact of Different Plant Development Regulators on Yield Components and Growth in Peanut

Yıl 2026, Cilt: 23 Sayı: 2, 422 - 435, 16.03.2026

Mustafa Yılmaz , Cenk Burak Şahin

https://doi.org/10.33462/jotaf.1614022

https://izlik.org/JA69ZF67SD

Öz

Plant growth regulators (PGRs) are organic compounds, produced within the plant or applied exogenously, that regulate physiological processes. These substances are active at low concentrations, can be translocated to other organs, and may exert either promotive or inhibitory effects on growth. This study aimed to determine the effects of PGRs, applied at different doses and developmental stages, on selected agronomic traits of groundnut (Arachis hypogaea L.). The research was conducted in Osmaniye province, situated in the Eastern Mediterranean Transition Zone, during the 2019 and 2020 main crop seasons. The experiment was arranged in a randomized complete block design (RCBD) with three replications. The experimental treatments consisted of the following: GA3BB10, GA3BB20, GA3FB10, GA3FB20, SWBB40, SWFB60, SWBBFB100, MCBB150, MCBB200, MCFB150, MCFB200, and a Control. A range of agronomic and quality parameters was assessed, including leaf length and width, the number of leaves and branches per plant, plant height, the number of pods per plant, pod weight per plant, 100-pod weight, 100-seed weight, shelling percentage, protein content, and pod yield. The findings of the study revealed that the application of treatments exerted a statistically significant influence on all measured traits, with the exception of the number of branches per plant. The GA3FB20 treatment yielded the highest values for shelling percentage (76.27%) and pod yield (669.76 kg da⁻¹), whereas the MCBB200 treatment resulted in the superior protein content (26.90%). Principal component analysis (PCA) indicated that the first three principal components (PCs) accounted for 80.369% of the total observed variance. In the biplot generated from PC1 and PC2, the GA3FB20, GA3FB10, and GA3BB20 treatments were identified in closer proximity to the vector for pod yield, suggesting a stronger association with this key parameter. In conclusion, it was determined that plant growth regulators had positive effects on the yield and yield components of the peanut plant, and in terms of pod yield, the application of GA3 at 20 ppm, particularly during the full blooming period, was appropriate.

Anahtar Kelimeler

Gibberellic acid , Seaweed , Mepiquat-chloride , Peanut (Arachis hypogaea L.) , Pod yield

Etik Beyan

There is no need to obtain permission from the ethics committee for this study.

Teşekkür

We are highly thankful to the staff of the Oil Seeds Research Institute for their help in the field work. This study has also been presented as an oral presentation in the IV. Balkan Agricultural Congress. Finally, we respectfully remember those who lost their lives in the earthquakes that occurred on February 6, 2023, in Türkiye.

Yerfıstığında Farklı Bitki Gelişim Düzenleyicilerinin Verim Bileşenleri ve Büyüme Üzerine Etkisi

https://izlik.org/JA69ZF67SD

Öz

Bitki büyüme düzenleyiciler, bitkiler tarafından oluşturulan veya bitkilere dışarıdan verilen, çok düşük dozlarda dahi bitkideki fizyolojik olayları olumlu ya da olumsuz etkileyen, diğer bitki kısımlarına taşınabilen ve bu etkinliğini diğer organlarda da devam ettirebilen organik maddelerdir. Bitki gelişimini teşvik ettikleri gibi engelleyici rolleri de bulunmaktadır. Bu çalışmada, farklı gelişim dönemlerinde farklı dozlarda uygulanan bitki büyüme düzenleyicilerin yerfıstığı bitkisinin (Arachis hypogaea L.) bazı agronomik özellikleri üzerindeki etkisini incelemek amaçlanmıştır. Araştırma, 2019 ve 2020 yıllarında ana ürün koşullarında, Doğu Akdeniz Geçit Kuşağı bölgesinde bulunan Osmaniye ilinde yürütülmüştür. Deneme, tesadüf bloklar deneme desenine (RCBD) göre üç yinelemeli olacak şekilde dizayn edilmiştir. Denemede: GA3BB10, GA3BB20, GA3FB10, GA3FB20, SWBB40, SWFB60, SWBBFB100, MCBB150, MCBB200, MCFB150, MCFB200 ve Kontrol olmak üzere toplamda on iki farklı uygulama yapılmıştır. Yürütülen çalışmada yaprak boyu, yaprak eni, bitki başına yaprak sayısı, bitki boyu, bitki başına dal sayısı, bitki başına meyve sayısı, bitki başına meyve ağırlığı, 100 meyve ve tohum ağırlığı, kabuk iç oranı, protein içeriği ve meyve verimi gibi parametreler incelenmiştir. Araştırma sonucunda, uygulamaların bitki başına dal sayısı hariç incelenen özellikler üzerinde istatistiki olarak önemli etkisi bulunduğu tespit edilmiştir. En yüksek kabuk iç oranı (%76.27) ve meyve verimi (669.76 kg da-1) GA3FB20 uygulamasından elde edilirken, protein oranı açısından MCBB200 uygulaması %26.90 değeriyle ön plana çıkmıştır. Yapılan temel bileşen analizi (PCA) sonucuna göre, ilk üç temel bileşenin (PC) toplam varyansı %80.369 oranında açıkladığı belirlenmiştir. PC1 ve PC2 baz alınarak oluşturulan grafikte, GA3FB20, GA3FB10 ve GA3BB20 uygulamalarının meyve verimine daha yakın konumda bulunduğu görülmüştür. Sonuç olarak, bitki büyüme düzenleyicilerin yerfıstığı bitkisinin verim ve verim unsurları üzerine olumlu etkileri olduğu, meyve verimi açısından GA3 uygulamasının özellikle tam çiçeklenme döneminde 20 ppm olarak verilmesinin uygun olduğu sonucuna varılmıştır.

Anahtar Kelimeler

Gibberellik asit , Deniz yosunu , Mepiquat klorür , Yerfıstığı (Arachis hypogaea L.) , Meyve verimi

Etik Beyan

There is no need to obtain permission from the ethics committee for this study.

Teşekkür

We are highly thankful to the staff of the Oil Seeds Research Institute for their help in the field work. This study has also been presented as an oral presentation in the IV. Balkan Agricultural Congress. Finally, we respectfully remember those who lost their lives in the earthquakes that occurred on February 6, 2023, in Türkiye.

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