Abstract
The effect of salinity and water stresses on the essential oil components of Rosmarinus officinalis essential oil was investigated. Rosemary plants were submitted to different water treatments: tap water (TW), salt water (SW) and without irrigation (NIR). GC/MS analysis showed that ten and eleven volatile compounds were identified in essential oil of rosemary plants irrigated with tap water (TW) and salt water (SW), respectively. However, thirteen volatile compounds were identified in essential oil of non-irrigated plants (NIR). Moreover, among these compounds, α-Pinene, Eucalyptol (1,8 Cineol), Camphene, Borneol, D-verbenone, Bornyl acetate were the major components of oil. Also, GC/MS results highlighted that non-irrigated rosemary plants showed the highest essential oil yield (Y). Obtained oil yields followed the order YNIR > YTW > YSW. In conclusion, qualitative and quantitative differences in rosemary essential oil components were highlighted in relation to water stress.
Highlights
Plant growth and development are adversely affected by many environmental stresses such as drought, low temperature, humidity, wind, salt, flooding, heat, drought, oxidative stress and heavy metal toxicity
The goalofofAlgerian this study is to investigate thestudy effectlooks of different water treatments essential oil composition rosemary plant
The highest essential oil yield (0.501 mL per 100g dry weight) was obtained from rosemary plants cultivated under rainfed conditions (NIR) and the lowest essential oil yield (0.375 mL per 100 g dry weight) was obtained for plants subjected to salt-water regime (SW)
Summary
Plant growth and development are adversely affected by many environmental stresses such as drought, low temperature, humidity, wind, salt, flooding, heat, drought, oxidative stress and heavy metal toxicity. Salinity stress is one of major factors limiting agricultural production. 20% of land worldwide is subjected to salinity stress [1]. In Algeria, the total agricultural area is 42.4 million hectares, representing only 18% of the total surface. The useful agricultural area is 8.5 million hectares, representing 20% of the total agriculture area [2]. Water and soil salinity are increasingly becoming a hindrance to Algerian agriculture, resulting in a dramatic reduction in the acreage of productive agricultural lands
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