热带作物学报2025，Vol.46Issue(7)：1692-1701,10.DOI:10.3969/j.issn.1000-2561.2025.07.016
叶面施锌对斑兰叶光合作用及挥发性成分的影响
Effects of Foliar Zinc Application on Photosynthesis and Volatile Components of Pandanus amaryllifolius Roxb
摘要
Abstract
The application of exogenous trace elements can help improve the yield and quality of certain economic crops.However,the effects of exogenous zinc on the photosynthetic physiological characteristics and volatile compounds in Pandanus amaryllifolius Roxb.(Pandan)remain unclear.Therefore,this study established a field control experiment on Pandan leaves with different zinc spray treatments,0 kg/hm2(CK),3.2 kg/hm2(Zn1),4.0 kg/hm2(Zn2),and 4.8 kg/hm2(Zn3).The aim was to monitor the temporal and spatial dynamics of the photosynthetic rate and volatile compounds content following zinc fertilization.The results indicated that Zn2 treatment significantly increased the chlorophyll con-tent,promoted the leaf growth and development,and resulted in the highest leaf count at all stages post-treatment.However,prolonged high-concentration zinc fertilization could inhibit leaf expansion and plant height.The photosyn-thetic physiology,photosynthetic rate,stomatal conductance,and transpiration rate increased with zinc concentration.Around 30 days post-treatment,Zn3 treatment performed the best,followed by Zn2 treatment.Zinc fertilization in-creased the content of volatile compounds.Zn2 and Zn3 treatments were notably effective in promoting the synthesis of several volatile compounds,such as 2-acetyl-1-pyrroline,2-hexadecanol,and ethyl palmitate.Under Zn2 treatment,the content of 2-acetyl-1-pyrroline and 2-hexadecanol increased by 203％and 80.89％,respectively,compared with CK.Zn1 treatment significantly increased 2-acetyl-1-pyrroline content at 20 days post-application,while Zn3 treatment sig-nificantly promoted the synthesis of squalene,neophytadiene,and phytol.Correlation analysis showed that the main volatile compounds in Pandan interacted with agronomic traits and photosynthetic physiological indicators.The increase in photosynthetic rate and leaf count promoted the synthesis of squalene and neophytadiene,whereas elevated intercel-lular CO2 concentration might inhibit the accumulation of 2-acetyl-1-pyrroline and squalene.This study demonstrates that appropriate zinc fertilization can effectively enhance photosynthesis,increase chlorophyll content,promote leaf growth,and boost the content of volatile compounds and characteristic volatile compounds in Pandan.The findings would provide a theoretical basis for optimizing high-efficiency cultivation techniques for Pandan and promoting the sustainable development of Pandan-related industries.关键词
斑兰叶/2-乙酰基-1-吡咯啉/锌肥/农艺性状/光合特性/挥发性物质Key words
Pandanus amaryllifolius Roxb./2-Acetyl-1-pyrroline/zinc fertilizer/agronomic traits/photosynthetic prop-erties/volatile compounds分类
农业科技引用本文复制引用
闫露,徐灵,冯倬,张昂,鱼欢,秦晓威,邓文明,吉训志,贺书珍,宁紫薇,鲁楠..叶面施锌对斑兰叶光合作用及挥发性成分的影响[J].热带作物学报,2025,46(7):1692-1701,10.基金项目
海南省自然科学基金项目(No.323RC531) （No.323RC531）
海南省重点研发计划项目(No.ZDYF2025SXLH013). （No.ZDYF2025SXLH013）
