Changes in Antioxidant Properties Induced by Heat Injury in Loquat Peel under High Temperature Stress

doi:10.3969/j.issn.1005-3395.2012.05.003

Home > Archive>Volume 20, Issue 5, 2012 >439-444. DOI:10.3969/j.issn.1005-3395.2012.05.003

Changes in Antioxidant Properties Induced by Heat Injury in Loquat Peel under High Temperature Stress
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                        10.3969/j.issn.1005-3395.2012.05.003
                    
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Affiliation:1.Fruit Research Institute of FAAS;2.Fujian Breeding Engineering Technology Center for Longan & Loquat,1.Fruit Research Institute of FAAS;2.Fujian Breeding Engineering Technology Center for Longan & Loquat,1.Fruit Research Institute of FAAS;2.Fujian Breeding Engineering Technology Center for Longan & Loquat,1.Fruit Research Institute of FAAS;2.Fujian Breeding Engineering Technology Center for Longan & Loquat,1.Fruit Research Institute of FAAS;2.Fujian Breeding Engineering Technology Center for Longan & Loquat,1.Fruit Research Institute of FAAS;2.Fujian Breeding Engineering Technology Center for Longan & Loquat
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Abstract:

In order to understand the adaptation of Eriobotrya japonica (Thunb.) Lindl. to high temperature stress, the peel antioxidant properties of loquat induced by heat injury were studied. The results showed that the threshold temperature of heat injury on loquat peel was 40℃ for 1.5 h under nature light, and the occurrence of peel heat injury related to temperature level and duration time. The light could promote the occurrence of heat injury. The heat injury degree of loquat peel was related to fruit nutrient status. The lower were Vc and Ca contents in pulp, the higher was the heat injury degree of peel. Under 40℃, superoxide anion and malondialdehyde (MDA) contents in peel increased, while activities of superoxide dismutase (SOD) and peroxidase (POD) decreased. These revealed antioxidant response mechanism of loquat peel to heat injury under high temperature stress.

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邓朝军,许奇志,蒋际谋,魏秀清,章希娟,郑少泉.高温胁迫对枇杷果皮热伤害的抗氧化特性影响[J].热带亚热带植物学报,2012,20(5):439~444

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Received:February 28,2012
Revised:April 24,2012
Adopted:July 23,2012
Online: September 26,2012
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