Effect of Chlormequat on Cold-resistance of <i>Phoebe microphylla</i>

FEI Yue; BAI Zhi-bo; NIU Xue-fang; HU Die; LIU Gang

doi:10.19303/j.issn.1008-0384.2019.01.016

Volume 34 Issue 1

Mar. 2019

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Article Navigation > Fujian Journal of Agricultural Sciences > 2019 > 34(1): 117-123

FEI Yue, BAI Zhi-bo, NIU Xue-fang, HU Die, LIU Gang. Effect of Chlormequat on Cold-resistance of Phoebe microphylla[J]. Fujian Journal of Agricultural Sciences, 2019, 34(1): 117-123. doi: 10.19303/j.issn.1008-0384.2019.01.016

Citation:

FEI Yue, BAI Zhi-bo, NIU Xue-fang, HU Die, LIU Gang. Effect of Chlormequat on Cold-resistance of Phoebe microphylla[J]. Fujian Journal of Agricultural Sciences, 2019, 34(1): 117-123. doi: 10.19303/j.issn.1008-0384.2019.01.016

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Effect of Chlormequat on Cold-resistance of Phoebe microphylla

doi: 10.19303/j.issn.1008-0384.2019.01.016

FEI Yue^1
,,
BAI Zhi-bo¹,
NIU Xue-fang²,
HU Die¹,
LIU Gang^{1
,
,}

1.
Center of Phoebe Germplasm Resources Evaluation and Innovation, Yangtze Uinivesity, Jingzhou, Hubei 434025, China
2.
Management Office of Times Square, Langfang, Hebei 065000, China

Received Date: 2018-09-09
Rev Recd Date: 2018-10-19
Publish Date: 2019-01-28

Abstract

Abstract

Objective Effect of chlormequat application on low-temperature tolerance of Phoebe microphylla was studied. Method Under simulated conditions, seedlings of P. microphylla were subjected to low-temperature stress with treatments of chlormequat chloride (CCC) in different concentrations. The contents of soluble protein (SP) and malondialdehyde (MDA), as well as the relative electrical conductivity (REC) and the activities of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) of the seedlings were determined. Result After spraying with CCC solutions, SP in leaves increased and reached a maximum when 50 mg/L of CCC was applied; MDA reduced when 100 mg·L^-1 of CCC was applied at 0℃ or -2.5℃; REC declined at the presence of 50 mg·L^-1 of CCC; and, the activities of SOD, POD and CAT peaked at the spraying of 100 mg·L^-1 of CCC at -2.5℃. Conclusion Based on the above mentioned cold resistance indicators, the CCC application on the seedlings at 100 mg·L^-1 scored the highest among all tested treatments on the membership function evaluation. It was considered effective for improving the cold resistance of P. microphylla.
- Phoebe microphylla,
- chlormequat,
- malondialdehyde,
- soluble protein,
- protective enzymes

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References(29)

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