Leaf Physiology Differs in Drought-Tolerant and Susceptible Cotton (Gossypium hirsutum L.) Genotypes

Gülşah Müjdeci; Volkan Mehmet Çınar; Aydın Ünay

doi:10.18016/ksutarimdoga.vi.1807494

TR EN

Kurağa Toleranslı ve Hassas Pamuk (Gossypium hirsutum L.) Genotiplerinde Yaprak Fizyolojik Özellikleri Farklılığı

Abstract

Su stresi pamuk verim ve kalitesini önemli ölçüde azaltmaktadır. Bu çalışma, tam ve kısıntılı sulama koşulları altında fizyo-morfolojik özelliklerin verim ile ilişkilerinin tolerant ve duyarlı genotipler arasındaki farklılığına odaklanmıştır. 10 anaç ve bunların 24 melez kombinasyonu, tam ve kısıntılı sulama koşulları altında test edilmiştir. Stres tolerans indeksi değerine göre, 10 genotip toleranslı, 24 genotip ise duyarlı bulunmuştur. Fizyo-morfolojik özellikler ile verim arasındaki ilişkiler korelasyon, step-wise regresyon ve path analizi kullanılarak değerlendirilmiştir. Çiçeklenme ve koza açma dönemlerinde kütiküla kalınlığı ve stoma yoğunluğunun verim ile olumlu ve önemli korelasyon katsayıları taşıdığı saptanmıştır. Kuraklığa tolerant bitkilerde daha yüksek yaprak alanı indeksi buna karşın daha düşük SPAD değerleri belirlenmiş ve verim ile SPAD arasında olumsuz ve önemli ilişki kaydedilmiştir. Tolerant genotiplerde, verim = 15.27 + 21.90 koza açma döneminde yaprak alanı indeksi + 10.17 çiçeklenme döneminde yaprak alanı indeksi + 7.19 koza açma döneminde kütiküla kalınlığı denklemi elde edilmiştir. Path analizi, en yüksek doğrudan etkinin çiçeklenme döneminde yaprak alanı indeksi olduğunu göstermiştir. Sonuç olarak, yüksek yaprak alanı indeksi ve kalın kütiküla yapısının, su kısıtı koşullarında verimli genotiplerin ıslahında seleksiyon kriteri olarak kullanılabileceği belirlenmiştir.

Keywords

Leaf Physiology Differs in Drought-Tolerant and Susceptible Cotton (Gossypium hirsutum L.) Genotypes

Abstract

Water stress significantly reduces cotton yield and quality. This study focused on the differences in the relationship between physio-morphological characteristics and yield under full and deficit irrigation conditions between tolerant and sensitive genotypes. Ten parents and their 24 hybrid combinations were tested under full and deficit irrigation conditions. According to the stress tolerance index value, 10 genotypes were tolerant, and 24 genotypes were susceptible. The relationships between physio-morphological characteristics and yield were evaluated using correlation, stepwise regression, and path analysis. Cuticle thickness and stomatal density exhibited favorable and significant associations with yield at both the flowering and boll opening stages. Drought-tolerant genotypes were found to have a higher leaf area index but lower SPAD values. Consequently, a significant negative correlation was recorded between SPAD and yield. In the tolerant group, the equation yield = 15.27 + 21.90 LAI BO + 10.17 LAI FL + 7.19 CT BO was obtained. Path analysis indicated that the highest direct effect was on LAI values during the flowering period. As a result, it has been determined that high LAI and cuticle thickness can be used as selection criteria in the selection of yielding genotypes under deficit irrigation conditions.

Keywords

References

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Details

Primary Language

English

Subjects

Industrial Crops

Journal Section

Research Article

Authors

Gülşah Müjdeci
0000-0002-1741-0343
Türkiye

Volkan Mehmet Çınar
0000-0001-5822-5649
Türkiye

Aydın Ünay ^*
0000-0002-7278-4428
Türkiye

Early Pub Date

October 23, 2026

Publication Date

-

Submission Date

October 20, 2025

Acceptance Date

June 18, 2026

Published in Issue

Year 2026 Number: Advanced Online Publication

DOI

https://doi.org/10.18016/ksutarimdoga.vi.1807494

IZ

https://izlik.org/JA52AX22DC

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RIS / Bibtex

APA

Müjdeci, G., Çınar, V. M., & Ünay, A. (2026). Leaf Physiology Differs in Drought-Tolerant and Susceptible Cotton (Gossypium hirsutum L.) Genotypes. Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi, Advanced Online Publication. https://doi.org/10.18016/ksutarimdoga.vi.1807494

AMA

1.Müjdeci G, Çınar VM, Ünay A. Leaf Physiology Differs in Drought-Tolerant and Susceptible Cotton (Gossypium hirsutum L.) Genotypes. KSU J. Agric Nat. 2026;(Advanced Online Publication). doi:10.18016/ksutarimdoga.vi.1807494

Chicago

Müjdeci, Gülşah, Volkan Mehmet Çınar, and Aydın Ünay. 2026. “Leaf Physiology Differs in Drought-Tolerant and Susceptible Cotton (Gossypium Hirsutum L.) Genotypes”. Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi, no. Advanced Online Publication. https://doi.org/10.18016/ksutarimdoga.vi.1807494.

EndNote

Müjdeci G, Çınar VM, Ünay A (October 1, 2026) Leaf Physiology Differs in Drought-Tolerant and Susceptible Cotton (Gossypium hirsutum L.) Genotypes. Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi Advanced Online Publication

IEEE

[1]G. Müjdeci, V. M. Çınar, and A. Ünay, “Leaf Physiology Differs in Drought-Tolerant and Susceptible Cotton (Gossypium hirsutum L.) Genotypes”, KSU J. Agric Nat., no. Advanced Online Publication, Oct. 2026, doi: 10.18016/ksutarimdoga.vi.1807494.

ISNAD

Müjdeci, Gülşah - Çınar, Volkan Mehmet - Ünay, Aydın. “Leaf Physiology Differs in Drought-Tolerant and Susceptible Cotton (Gossypium Hirsutum L.) Genotypes”. Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi. Advanced Online Publication (October 1, 2026). https://doi.org/10.18016/ksutarimdoga.vi.1807494.

JAMA

1.Müjdeci G, Çınar VM, Ünay A. Leaf Physiology Differs in Drought-Tolerant and Susceptible Cotton (Gossypium hirsutum L.) Genotypes. KSU J. Agric Nat. 2026. doi:10.18016/ksutarimdoga.vi.1807494.

MLA

Müjdeci, Gülşah, et al. “Leaf Physiology Differs in Drought-Tolerant and Susceptible Cotton (Gossypium Hirsutum L.) Genotypes”. Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi, no. Advanced Online Publication, Oct. 2026, doi:10.18016/ksutarimdoga.vi.1807494.

Vancouver

1.Gülşah Müjdeci, Volkan Mehmet Çınar, Aydın Ünay. Leaf Physiology Differs in Drought-Tolerant and Susceptible Cotton (Gossypium hirsutum L.) Genotypes. KSU J. Agric Nat. 2026 Oct. 1;(Advanced Online Publication). doi:10.18016/ksutarimdoga.vi.1807494