The Agromorphological, Physiological and Biochemical Effects of Different Phosphorus Levels on Red Radish Growth

Ayşe Nur Şavkan; Ramazan Güngör; Hasan Can

doi:10.18016/ksutarimdoga.vi.1793072

TR EN

Farklı Fosfor Seviyelerinin Kırmızı Turp Büyümesine Agromorfolojik, Fizyolojik ve Biyokimyasal Etkileri

Öz

Bu araştırmanın amacı, hidroponik ortamda kırmızı fındık turp (Raphanus sativus var. radicula) bitkisinin değişen fosfor(P) konsantrasyonlarına karşı agromorfolojik, fizyolojik ve biyokimyasal tepkilerini incelemektir. Hoagland besin çözeltisi kullanılarak üç farklı P seviyesi uygulanmıştır: düşük P (-25%, 23,25 ppm), kontrol (31,00 ppm) ve yüksek P (+25%, 38,75 ppm). Çalışmada bitki büyümesi, kök morfolojisi, P alımı ve sürgünler, kökler ve yumru kökler arasındaki dağılımı değerlendirilmiştir. Sonuçlar yüksek P koşullarında yetiştirilen turp bitkilerinin en büyük yumru genişliğine, uzunluğuna ve ağırlığına sahipken, kök morfolojik parametreleri genel olarak düşük fosfor koşullarında yetiştirilen bitkilerde en yüksek değerlere sahiptir. Yine düşük P koşullarında, malondialdehit (MDA), prolin, karotenoidler ve klorofil a içeriği artarken, klorofil b içeriği önemli ölçüde azalmıştır. Yüksek fosfor uygulamasında, yaprakların göreceli su içeriği değerinin kontrol grubuna göre daha yüksek olduğu, karotenoid seviyesinin ise düşük olduğu tespit edilmiştir. Farklı bitki organlarındaki toplam fosfor içeriği ise, sürgünlerde düşük fosfor uygulaması belirginken, köklerde ise yüksek fosfor uygulaması fosfor birikimini artırmıştır. Tersine, yumrudaki fosfor oranı ise düşük fosfor koşullarında azalma göstermiş, ancak hem kontrol hem de yüksek fosfor seviyelerinde sabit kalmıştır. Bu sonuçlar, değişen fosfor mevcudiyetine yanıt olarak kırmızı turpta görülen farklı morfolojik ve fizyolojik adaptasyonları vurgulamakta ve hidroponik üretim sistemlerinde besin yönetiminin iyileştirilmesi için değerli bilgiler sunmaktadır.

Anahtar Kelimeler

The Agromorphological, Physiological and Biochemical Effects of Different Phosphorus Levels on Red Radish Growth

Abstract

The aim of this research was to examine the agro-morphological, physiological, and biochemical reactions of red radish (Raphanus sativus var. radicula) to varying concentrations of phosphorus(P) in a hydroponic setting. Three levels of P were administered using Hoagland’s nutrient solution: low P (-25%, 23.25 ppm), control (31.00 ppm), and high P (+25%, 38.75 ppm). The study assessed plant growth, root morphology, P uptake, and its distribution across shoots, roots, and tubers. The results show that radish plants grown under high P conditions have the largest tuber width, length, and weight, while root morphological parameters generally have the highest values in plants grown under low phosphorus conditions. In such cases (Low P), the content of malondialdehyde (MDA), proline, carotenoids, and chlorophyll a increased, while chlorophyll b decreased significantly. In the high phosphorus application, the leaf relative water content value was found to be higher than that of the control group, while the carotenoid level was found to be low. About the total phosphorus content in different plant organs, low phosphorus application in shoots was evident, while high phosphorus application in roots increased phosphorus accumulation. Conversely, tuber phosphorus declined under low phosphorus conditions but remained sustained under both control and high phosphorus levels. These results underscore the differing morphological and physiological adaptations of red radish in response to varying phosphorus availability, offering valuable insights for improving nutrient management in hydroponic production systems.

Keywords

Thanks

We thank all staff members of the To Geothermal Advanced Greenhouse Technologies and Production Techniques Co-Application and Research Center (JISTUAM) of Kırşehir Ahi Evran University for the technical supports and supplying all facilities during the experiments.

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Details

Primary Language

English

Subjects

Vegetable Growing and Treatment

Journal Section

Research Article

Authors

Ayşe Nur Şavkan ^*
0000-0002-0826-1243
Türkiye

Ramazan Güngör
0000-0001-9834-1265
Türkiye

Hasan Can
0000-0002-3276-0106
Türkiye

Early Pub Date

March 9, 2026

Publication Date

March 9, 2026

Submission Date

September 29, 2025

Acceptance Date

January 8, 2026

Published in Issue

Year 2026 Number: Advanced Online Publication

DOI

https://doi.org/10.18016/ksutarimdoga.vi.1793072

IZ

https://izlik.org/JA69FU24MN

Cite

RIS / Bibtex

APA

Şavkan, A. N., Güngör, R., & Can, H. (2026). The Agromorphological, Physiological and Biochemical Effects of Different Phosphorus Levels on Red Radish Growth. Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi, Advanced Online Publication, 1205-1216. https://doi.org/10.18016/ksutarimdoga.vi.1793072