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Abstract
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Aloe vera, a succulent perennial and drought resisting medicinal plant in the word, is well known for its therapeutic potential. A number of beneficial effects of A. vera have been reported, including immunomodulatory, wound and burn healing, hypoglycemic, anticancer, gastro-protective, antifungal and anti-inflammatory properties. These beneficial therapeutic properties of A. vera have been employed for a number of commercial applications. Soil flooding is a seasonal factor that negatively affects plant performance and crop yields. In order to investigate the effects of waterlogging regimes on growth and aloin yield of A. vera, a pot experiment was conducted , and the waterlogging set to four regimes (0, 7, 14 and 21 days) and the waterlogging depth was 5cm. The waterlogging regimes had a significant effect on leaf weight, aloin production and root growth. The data indicate that the waterlogging treatments a reduced the leaf fresh and dry weight, 35% reduction in fresh weight and a 43% reduction in dry weight occurred 21 days after waterlogging treatments compared to the control. The result showed that the waterlogging decreased the fresh and dry weight of root. The fresh and dry weight of root subjected to waterlogging regimes decreased by 62 and 41.2% compared to the control. Additionally, waterlogging decreased the aloin yield of the lowest aloin yield (5 g per plant) was observed 21 days after imposing the waterlogging, there was no significant different between 7 and 14 day after waterlogging treatments. Therefore, when waterlogging adversities occur in A.vera, the implementation of appropriate surface and subsurface drainage schemes is needed as soon as possible to alleviate the damage.
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