Chinese Journal of Applied Ecology
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LI Yang-yang1, GENG Qing-yun2, FEI Cong1, FAN Hua1*
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Abstract: Sugar beet (Beta vulgaris cv. Beta 356) was subjected to drought stress during vegetative development by maintaining the soil water content in the 0-40 cm soil depth at 70%, 50% or 30% of field capacity to study the physiological traits of the leaves. Results showed that the compensation index was the highest in the 50% field capacity treatment. Malonaldehyde (MDA) content, relative conductivity, catalase (CAT) activity, and soluble sugar content began to increase 24 h after rehydration. Proline content began to increase 48 h after rehydration. In contrast, no compensation effect was observed in peroxidase (POD) activity after rehydration. Among the active oxygen-scavenging enzymes, CAT was most sensitive to drought stress. Supplemental irrigation should be carried out promptly when the soil water content dropped to 50% of field capacity during vegetative development. Rehydration could promote self-repair functions in leaves, thus reducing the effects of drought on sugar beet yield and sugar content.
LI Yang-yang1, GENG Qing-yun2, FEI Cong1, FAN Hua1*. Physiological responses of sugar beet (Beta vulgaris) to drought stress during vegetative development period under drip irrigation.[J]. Chinese Journal of Applied Ecology.
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URL: https://www.cjae.net/EN/abstract/abstract12179.shtml
https://www.cjae.net/EN/Y2016/V27/I1/201