|Table of Contents|

Effects of Exogenous Calcium on Physiological Indexes of Apple Flower Organs Under Low Temperature Stress

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2021年05
Page:
28-33
Research Field:
Publishing date:

Info

Title:
Effects of Exogenous Calcium on Physiological Indexes of Apple Flower Organs Under Low Temperature Stress
Author(s):
YUAN Jiawei1; 2; ZHANG Jian1; WANG Lu1; CHANG Fangjuan1; SUN Quan2; LIANG Zhejun1
(1.Cotton Research Institute,Shanxi Agricultural University,Yuncheng,Shanxi 044000；2.School of Agronomy,Ningxia University,Yinchuan,Ningxia 750021)
Keywords:
apple blossom organ; exogenous calcium; low-temperature stress; physiological indexes; comprehensive assessment
PACS:
-
DOI:
10.11937/bfyy.20202629
Abstract:
Taking 20-year-old ‘Red Fuji’ apple as test material,the effects of different concentrations of exogenous calcium on MDA content,SOD activity,POD activity and CAT activity in apple flower organs were studied by using artificial climate chamber to simulate low temperature freezing injury.The comprehensive evaluation of cold resistance was conducted by using the membership function method.The results showed that under low temperature stress,the content of MDA in different concentrations of exogenous calcium decreased by 10.7%-53.6% compared with the control,and the differences were extremely significant.All treatments except 28 mmol?L-1 CaCO3 increased SOD activity,and all treatments except 14 mmol?L-1 Ca(NO3)2 showed extremely significant difference compared with the control.Different concentrations of exogenous calcium increased the POD activity,except 14 mmol?L-1 and 28 mmol?L-1 Ca(NO3)2 treatments were significantly different from the control.Compared with the control group,CAT activity increased by 8.7%-22.7% with different concentrations of exogenous calcium,and showed extremely significant differences with the control group.In conclusion,four physiological indexes,including malondialdehyde content,catalase activity,peroxidase activity and superoxide dismutase activity,can be used to identify the cold resistance of apple.The membership function value analysis showed that the apple flower organs treated with 21 mmol?L-1 CaCl2 had the best cold-resistance effect.

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Last Update: 2021-06-07