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Review of Drought Stress on Yield, Seed Oil and Essential Oil Percentage in Medicinal Plants
Volume 2, Issue 2, 2020, Pages 10 - 24
Author(s) : mojgan rasooli* 1 , Mahmood Tohidi 2

1 PhD Student, Department of Agriculture and Plant Breeding, Dezful Branch, Islamic Azad University, Dezful, Iran

2 Assistant Professor, Department of Agriculture and Plant Breeding, Dezful Branch, Islamic Azad University, Dezful, Iran

Abstract :
Environmental stresses, including drought stress, are the most important factor reducing the yield of agricultural products worldwide. And have a significant negative impact on plant production areas. Drought stress is an important factor in reducing the dispersal of plants in most parts of the world. Given that most of Iran has an arid and semi-arid climate and a shortage of water resources, the control of these stresses to achieve real plant performance and increase the economic value of the product is inevitable. Since the effect of drought stress on the qualitative and quantitative characteristics of medicinal and aromatic plants has been less studied, in this study, by studying and reviewing valid articles, the results of stress studies have been inferred as follows. Medicinal plants have different sensitivity to drought stress at different stages of growth and the effect of drought stress on medicinal plants has caused different results in terms of quantitative and qualitative characteristics. In medicinal plants, application of different levels of drought stress has led to different results in yield, yield components, essential oil percentage, essential oil yield, essential oil quality, and seed oil percentage.
Keywords :
Drought, proline, grain yield, percentage of essential oil, medicinal plants