高温胁迫对观赏凤梨生长状况的影响

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中图分类号：S668.3 文献标识码：A 文章编号：2095-5774（2025）02-0169-06

Influence of high temperature stress on the growth status of ornamental pineapple

Ma Yinjie'，Zhao Wenyu²，Wang Bei²，Kang Qiuyu³，Liu Jingbo4，Li Weiming²，ChenDong5

（1.Nanjing Agricultural Equipment Promotion Center，Nanjing，Jiangsu 21Oo38， China;

2.NanjingInstituteofVegetableScience，Nanjing，Jiangsu 21OO42，China;

3.Nanjing Hexi Gardening Engineering Co.，Ltd.，Nanjing，Jiangsu 2118oo， China;

4.Nanjing Agricultural Comprehensive Administrative Law Enforcement Corps，Nanjing， Jiangsu 21oo18， China;

5.NanjingNewAgriculturalScienceandTechnologyInovationInvestmentCo.，Ltd.，Nanjing，Jiangsu232，China）

Abstract：【Objective】Thisstudyaimstoinvestigatetheimpactofhigh temperatureonphysiological indicatorsof ornamental pineapple，providingtechnicalsupportforcultivationofornamental pineappleinNanjingduring summerheat. 【Method】 Ornamental pineapples were exposed to a high temperature of 40% for12 h，24 h，36 h，and 48 h，respectively， andcompared with thecontrol group（Oh）to observe changes intheir physiological indicators.【Result】When exposed to （204号 40% high temperature stress for 12h ，the activities of catalase（CAT），superoxide dismut （SOD），and peroxidase（POD） in theleaves ofornamental pineapples increased and reached their peaks.Subsequently，with the extensionof temperature stress duration，theactivities of CAT，SOD，and POD decreased tovaryingdegrees.Thecontentof malondialdehyde （MDA），however， showed continuous upward trend， reaching its peak at 48h .The content of heat shock protein and proline reached their peaks at 24h and 12h ，under 40% high temperature stress conditions. The content of total free amino acids reached its peak at 48h ，while the content of soluble protein and chlorophyl decreased significantly with the increase of treatment duration，and stomata gradually closed.The contentof carotenoids，however，did not change significantly.【Conclusion】High temperature stress hasanimpactonthephysiological indicatorsofornamental pineapple leaves.Most indicators reachedtheirpeaksafter12hoftreatment，indicatingthatshort-termhightemperaturehasalready caused damage to ornamental pineapples.

Keywords：ornamental pineapple;high temperature stres;physiological indicator;enzymeactivity;osmoticregulatory substance;photosynthesis

观赏凤梨为凤梨科（Bromeliaceae）多年生常绿草本植物，具有观花、观叶、观果的特性，备受消费者喜爱[]。（剩余6335字）