[01] Hussein A. H. Said Al Ahl, Medicinal and Aromatic Plants Research Department, National Research Centre, Dokki, Giza, Egypt. [02] Atef M. Z. Sarhan, Department of Ornamental Horticulture, Faculty of Agriculture, Cairo University, Cairo, Egypt. [03] Abou Dahab M. Abou Dahab, Department of Ornamental Horticulture, Faculty of Agriculture, Cairo University, Cairo, Egypt. [04] El-Shahat N. Abou-Zeid, Medicinal and Aromatic Plants Research Department, National Research Centre, Dokki, Giza, Egypt. [05] Mohamed S. Ali, Medicinal and Aromatic Plants Research Department, National Research Centre, Dokki, Giza, Egypt. [06] Nabila Y. Naguib, Medicinal and Aromatic Plants Research Department, National Research Centre, Dokki, Giza, Egypt.

This investigation was initiated to study the effect of foliar spray with zinc, different gamma radiation doses and their interaction treatments on chemical composition of dill. The results can be summarized as follows; pre-sowing seeds were irradiated with gamma radiation doses (0, 2, 4, 8, 16, 32 and 64 k rd) with or without zinc (150 ppm). The treatments of zinc and in most doses of gamma radiation increased the contents of chlorophyll a, b and total chlorophyll (a+b), the interaction treatments between zinc and 2, 4 and 8 k-rad of gamma radiation was superior in increasing these values. The treatments of zinc or gamma radiation up to 32 k-rad increased total carbohydrate content, the treatment of zinc combined 2 k-rad gave the highest value in this concern.

Anethum graveolens L., Zinc, Carbohydrate, Gamma Radiation, Chlorophyll

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