中国生态农业学报（中英文）2026，Vol.34Issue(1)：81-91,11.DOI:10.12357/cjea.20240714
不同复配外源物质对低温下番茄生长生理特性及产量品质的影响
Effects of different compounded exogenous substances on the growth and physiological characteristics,and yield and quality of tomato under low temperature
摘要
Abstract
In this study,we investigated the effects of exogenous alginate oligosaccharides(AOS),melatonin(MT),and nano-silicon dioxide(NPs)on the growth and physiological characteristics of tomato plants,along with fruit yield and quality under conditions of low-temperature stress.As experimental plants,we used the tomato variety'Zhonza 9',which were subjected to low-temperature treatments at 15 ℃/6 ℃(day/night).Five treatments were established as follows:foliar spraying with distilled water(CK),75 mg·L-1 AOS+50 mg·L-1 MT(T1),75 mg·L-1 AOS+50 mg·L-1 NPs(T2),50 mg·L-1 MT+50 mg·L-1 NPs(T3),and 75 mg·L-1 AOS+50 mg·L-1 MT+50 mg·L-1 NPs(T4).The results revealed increases in the fresh weight of tomato seedlings sprayed with different com-binations of exogenous substances compared with the CK treatment,among which,the aboveground fresh weight of tomato seedlings under the T3 treatment was significantly increased by 37.61％(P＜0.05),and the belowground fresh weight of tomato seedlings under the T4 treatment was significantly increased by 57.56％(P＜0.05).Compared with the CK treatment,the total root surface area of to-mato seedlings under T2 and T4 treatments significantly increased by 32.09％and 53.87％(P＜0.05),respectively.Furthermore,com-pared with the CK treatment,hydrogen peroxide(H2O2)contents in the root system of tomato seedlings under the T1,T2,and T3 treatments significantly reduced by 90.57％,92.36％,and 92.47％(P＜0.05),while changes in contents of H2O2 and superoxide(O2-·)in the tomato seedlings were relatively stable under T4 treatment;the T1,T2,T3,and T4 treatments induced significant reductions in malondialdehyde(MDA)contents in new leaves and root system,and T1 and T3 treatments significantly decreased MAD contents in old leaves.In addition,we detected significant changes in the activities of superoxide dismutase(SOD),peroxidase(POD),and catalase(CAT)in old and new leaves,and the root systems of tomato seedlings under the T1 treatment.Compared with the CK treat-ment,the T1 treatment promoted significant increases of 18.89％and 71.80％(P＜0.05)in the activities of SOD in old leaves and root systems,respectively;significant increases of 33.51％and 42.27％(P＜0.05)in the activities of POD in old and new leaves,respect-ively;significant reductions of 47.33％,17.91％,and 47.22％(P＜0.05)in the activities of CAT in old and new leaves,and root sys-tems,respectively.Furthermore,compared with the CK treatment,there were significant increases of 51.22％,124.42％,40.69％,157.69％,and 172.96％(P＜0.05)in the fruit weight per plant,contents of soluble proteins,lycopene,and soluble sugars,and sugar-to-acid ratio of tomato,respectively,under the T3 treatment;the tomato yield,and contents of soluble proteins,lycopene,and free amoni acid were significantly increased by 70.55％,112.08％,84.41％,and 37.47％(P＜0.05),respectively,under the T4 treatment.Principal component analysis of tomato plant resistance,growth,and quality indices revealed that,overall,the T2 treatment had the best mitiga-tion effect against low-temperature stress.In summary,foliar spraying of tomato plants with AOS,MT,and NPs under conditions of low-temperature stress could enhance the antioxidant capacity of tomato plants,reduce the accumulation of reactive oxygen species,promote root system growth,alleviate the low-temperature stress,and enhance the yield and quality of tomato fruits,among which,foliar spraying with AOS and NPs treatment was established to have the best effect in alleviating low-temperature stress in tomato.关键词
番茄/低温胁迫/海藻酸钠寡糖/褪黑素/纳米二氧化硅Key words
tomato/low-temperature stress/alginate oligosaccharides/melatonin/nano-silicon dioxide分类
农业科技引用本文复制引用
代泽敏,赵晏俪,王玉琢,董鹏荣,张渊博,侯雷平,张毅,石玉..不同复配外源物质对低温下番茄生长生理特性及产量品质的影响[J].中国生态农业学报（中英文）,2026,34(1):81-91,11.基金项目
山西省重点研发计划重点项目(202102140601013)和山西省现代农业产业技术体系建设专项资金资助项目(2024CYJSTX08)资助 This study was supported by the Key Project of Shanxi Provincial Key R&D Program(202102140601013)and the Special Funds Grant for Construc-tion of Modern Agricultural Industrial Technology System in Shanxi Province(2024CYJSTX08). （202102140601013）
