富氢水对提高温室高架基质栽培草莓品质及抗逆性的效果

Effect of Hydrogen-rich Water on Improving Quality and Stress Resistance of Strawberry Cultivated with Substrate by Elevated Device in Greenhouse

为了研究富氢水(Hydrogen-rich water,HRW)对草莓生长的影响,以“法兰地”草莓为材料,采用HRW和自来水分别浇灌草莓根部,通过对果实品质指标可溶性固形物、可溶性糖含量、可滴定酸含量、总黄酮含量、总酚含量、可溶性蛋白含量、硝酸盐含量和花青素含量进行测定,并分别对根系、叶片的抗逆指标丙二醛(MDA)含量、超氧化物歧化酶(SOD)活性、过氧化氢酶(CAT)活性、过氧化物酶(POD)活性、抗坏血酸过氧化物酶(APX)活性、脯氨酸(Pro)含量进行测定,分析灌溉HRW对温室高架基质栽培草莓的果实品质以及对植株抗逆能力的影响。结果表明:HRW灌溉的草莓果实可溶性糖含量、可滴定酸含量、总黄酮含量、总酚含量及根系CAT活性、APX活性分别比自来水对照显著提升6.5%、8.4%、7.9%、4.0%及7.9%、7.4%,叶片SOD活性极显著提升23.4%,叶片Pro含量和根系MDA含量、SOD活性、POD活性分别极显著降低8.3%、8.4%、11.9%、18.3%。说明HRW灌溉处理可提升草莓抗氧化能力,并通过调节抗氧化酶活性的高低参与草莓根系抗逆性调控,从而提高草莓的口感和品质,达到提质增效的目的。

In order to study the effect of hydrogen-rich water(HRW)on the growth of strawberry,the strawberry variety of'Falandi'was taken as material,and the roots were irrigated with HRW and tap water,respectively,the effects of HRW irrigation on fruit quality and stress resistance of strawberry cultivated with substrate by elevated device in greenhouse were analyzed through measuring the fruit quality indexes of soluble solid content,soluble sugar content,titratable acid content,total flavone content,total phenol content,soluble protein content,nitrate content and anthocyanin content,and measuring the stress resistance indexes of malondialdehyde(MDA)content,superoxide dismutase(SOD)activity,catalase(CAT)activity,peroxidase(POD)activity,ascorbate peroxidase(APX)activity and proline(Pro)content in roots and leaves.The results showed that the soluble sugar content,titratable acid content,total flavone content and total phenol content of strawberry fruits,CAT activity and APX activity of strawberry roots irrigated with HRW were significantly increased by 6.5%,8.4%,7.9%,4.0%,7.9%,7.4% than those of the control,respectively.The SOD activity of leaves was extremely significantly increased by 23.4%than that of the control,while the Pro content of leaves,MDA content,SOD activity and POD activity of roots were extremely significantly reduced by 8.3%,8.4%,11.9% and 18.3%,compared with those of the control,respectively.It shows that HRW irrigation can improve the antioxidant capacity of strawberry,and participate in the regulation of root stress resistance of strawberry by regulating the activity of antioxidant enzymes,so as to improve the taste and quality of strawberries,and achieve the purpose of improving quality and benefits.