A Doctoral Dissertation at the University of Basrah Examines Wheat Crop Response to Growth Regulators

A Doctoral Dissertation at the University of Basrah Examines Wheat Crop Response to Growth Regulators

A doctoral dissertation submitted to the College of Agriculture at the University of Basrah investigated the response of wheat (Triticum aestivum L.) to the growth regulators paclobutrazol and gibberellin, in addition to nitrogen fertilization.

The study, conducted by Muhannad Musa Shawkan Al-Zubaidi, aimed to achieve an optimal balance between increasing grain yield and improving protein content, while reducing lodging through the integrated management of three key factors.

The findings demonstrated that paclobutrazol at a concentration of 100 mg L⁻¹ was superior in enhancing yield and reducing the lodging index. In contrast, gibberellin at 200 mg L⁻¹ improved vegetative growth traits, protein content, and the anatomical characteristics of the stem.

Nitrogen fertilization at 240 kg ha⁻¹ achieved the highest productivity, whereas the 120 kg ha⁻¹ level recorded the highest protein percentage. Moreover, the triple interaction among the studied factors proved effective in increasing productivity across both growing seasons.

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