Effects of Carbon Nanodots on Seedling Growth and Related Physiological and Biochemical Parameters in Peanut

doi:10.7668/hbnxb.201751301

Abstract

Abstract: The effects of carbon nanodots with different concentrations on the seedling growth and related physiological and biochemical indexes of peanut were studied under the condition of indoor hydroponics. The results showed that the treatment of carbon nanodots had different promotion effects on seed germination, seedling growth, root activity and antioxidant enzyme activity. The germination potential, germination rate, main root length, seeding height, root dry mass, aboveground dry mass, root vigor, and the enzyme activities of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) of seedlings all showed the same trend of increasing first and then decreasing along with the increase of carbon nanodots concentration. In addition, carbon nanodots reduced the content of malondialdehyde (MDA), and increased the content of soluble sugar in peanut seedlings. Compared with the control, the treatment with 180 mg/L carbon nanodots had the best effect, in which the main root length, seeding height, root dry mass, aboveground dry mass, root fresh weight, aboveground fresh weight, SOD activity, CAT activity and root vigor increased by 36.84%, 46.24%, 31.03%, 47.03%, 55.93%, 42.22%, 27.73%, 36.81% and 4.5 times, respectively. The results indicated that suitable concentration of carbon nanodots could promote the seedling growth of peanut by regulating the physiological and biochemical behaviors.

Key words: Carbon nanodots, Peanut, Seedling growth, Root activity, Antioxidant enzyme activity

CLC Number:

S565.01

MA Xingli, ZHAO Kunkun, ZHAO Pinyuan, LI Shanshan, MA Xiaoqiang, LI Zhongfeng, ZHANG Xingguo, YIN Dongmei. Effects of Carbon Nanodots on Seedling Growth and Related Physiological and Biochemical Parameters in Peanut[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2019, 34(2): 138-144. doi: 10.7668/hbnxb.201751301.

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