The Effect of Salinity on Cotton (Gossypium hirsutum L.) Growth and Physiology at Seedling Stage Under Hydroponic Conditions

Authors : Rukiye Kılıç, Çetin Karademir, Emine Karademir

Pages : 182-190

Doi:10.25308/aduziraat.1683478

View : 59 | Download : 55

Publication Date : 2025-12-31

Article Type : Research Paper

Abstract :This study was carried out to determine the tolerance of 5 cotton varieties grown in hydroponics conditions to salt stress and to determine plant growth parameters and some physiological characteristics in plants grown in saline environments. The experiment was established in a hydroponic medium containing 5 cotton varieties (BA 1010, Fiona, May 455, Novelia and Orion) and 2 salt concentrations (Control and 100 mM NaCl). Plants were grown in a growth chamber at 16/8-hour photo period, 25/20oC (day/night) temperature and 40±2% humidity. Salinity induced morphological and physiological changes, including a reduction in the root length, shoot dry weight and leaf area, but root fresh weight was increased with salt application, on the other hand, shoot length, shoot fresh weight, root dry weight, root/shoot ratio, root surface area and chlorophyll content (SPAD value) were not affected. It was determined that there were significant statistical differences among the varieties in terms of all the characteristics except the root/shoot ratio. The interaction between variety x salt applications was significant in root length, root fresh and root dry weight, root/shoot ratio, root surface area and SPAD value. The results of this study indicated that the Novelia variety was prominent in terms of root fresh weight, shoot fresh weight, root dry weight, shoot dry weight, root surface area and leaf area, while Fiona and Novelia were prominent in terms of root length. It was concluded that Novelia and Fiona varieties had better performance than other varieties for saline conditions because they have better root properties under salt stress conditions.
Keywords : Pamuk, tuzluluk, hidroponik, fizyoloji, bitki büyümesi

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