Basil (Ocimum basilicum L.) is one of the aromatic plants that show great morphology diversity such as inflorescence, leaf and aroma profiles. In world scale, basils have been widely used as a culinary herb. The essential oils of basils were used as food flavourant, medicines and in perfumery industry. In this study, different accessions of Ocimum basilicum L. from different regions were introduced and cultivated in Malaysia. The morphological variability, chemical compositions and antibacerial activity of the basil essential oils were studied. Morphology of the basils is distinctly differed....