Abstract
The experiment aimed to study the effects of abscisic acid on soluble sugar content of Perilla frutescens seedlings under cadmium stress. The leaves of P. frutescens were foliage sprayed with different concentrations (0, 1, 5, 10, 20 μmol·L−1) of ABA under cadmium stress (10 mgkg−1). The results showed that the soluble sugar content in root, stem and shoot increased with the ABA concentration increasing at first, and then decreased. The soluble sugar content in leaf decreased with the ABA concentration increasing. The soluble sugar content in root and stem peaked when the ABA concentration was 5 pmol-L−1, which increased by 8.11% and 19.87% compared to the ABA concentration was 0 pmol-L−1, respectively. And the soluble sugar content in leaf peaked when the ABA concentration was 1 pmol-L−1, which increased by 1.04%. In conclusion, appropriate concentration of ABA could increase the soluble sugar content of P. frutescens under cadmium stress, and alleviated the stress of cadmium on P. frutescens seedlings to some extent.
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