河南农业科学 ›› 2023, Vol. 52 ›› Issue (8): 115-125.DOI: 10.15933/j.cnki.1004-3268.2023.08.013

• 园艺 • 上一篇    下一篇

不同蓝莓品种对低温处理的生理响应及抗寒性评价

魏鑫,王升,王兴东,杨玉春,刘有春,刘成   

  1. (辽宁省果树科学研究所,辽宁 营口 115009)
  • 收稿日期:2023-02-11 出版日期:2023-08-15 发布日期:2023-08-29
  • 通讯作者: 刘成(1966-),男,辽宁盖州人,研究员,博士,主要从事蓝莓和树莓种质资源鉴定、遗传育种、栽培生理研究与技术推广工作。E-mail:stevecliu@hotmail.com
  • 作者简介:魏鑫(1982-),男,河北沧州人,副研究员,硕士,主要从事蓝莓和树莓种质资源鉴定、遗传育种、栽培生理研究与技术推广工作。E-mail:run2010@163.com
  • 基金资助:
    财政部和农业农村部国家现代农业产业技术体系项目(CARS-29);辽宁省科学事业公益研究基金项目(20180023);辽宁省农业科学院学科建设计划项目(2019DD164924);辽宁省首席特派员专项计划项目(2022JH5/10400124)

Physiological Response and Cold Resistance Evaluation of Blueberry Varieties under Low Temperature Treatment

WEI Xin,WANG Sheng,WANG Xingdong,YANG Yuchun,LIU Youchun,LIU Cheng   

  1. (Liaoning Institute of Pomology,Yingkou 115009,China)
  • Received:2023-02-11 Published:2023-08-15 Online:2023-08-29

摘要: 为探究蓝莓对低温处理的生理响应,筛选抗寒性评价指标并综合评价蓝莓品种的抗寒性,以美登、北陆、蓝丰、密斯梯和精华5个蓝莓品种1年生枝条为试材,研究低温处理(-10、-15、-20、-25、-30、−35、-40℃)对其相对电导率、过氧化物酶(POD)活性、超氧化物歧化酶(SOD)活性以及丙二醛(MDA)、游离脯氨酸含量的影响,同时测定可溶性总糖、还原糖、可溶性蛋白、淀粉、纤维素、果糖、葡萄糖、蔗糖含量,总含水量,自由水含量并计算束缚水含量、自由水含量/总含水量和束缚水含量/总含水量,采用主成分分析法对不同蓝莓品种的抗寒性进行综合评价。结果表明,随着温度的降低,5个蓝莓品种枝条的相对电导率、MDA含量逐渐升高,呈“S”形变化曲线;POD、SOD活性呈单峰变化趋势;游离脯氨酸含量呈逐渐上升的变化趋势。美登、北陆和蓝丰3个品种具有较高的可溶性总糖、还原糖、葡萄糖、果糖、蔗糖、淀粉、纤维素和可溶性蛋白含量;美登具有较低的总含水量、自由水含量和自由水含量/总含水量,密斯梯具有较高的总含水量、自由水含量和自由水含量/总含水量以及较低的束缚水含量/总含水量。可以将相对电导率,MDA、可溶性蛋白、还原糖、可溶性总糖、果糖、自由水、束缚水含量和POD活性作为评价蓝莓品种抗寒性强弱的指标。通过综合分析,可确定供试5个蓝莓品种的抗寒性由强到弱依次为美登、北陆、蓝丰、精华和密斯梯。

关键词: 蓝莓, 低温处理, 生理响应, 抗寒性

Abstract: To study the physiological response of blueberry to low temperature treatment,screen the evaluation index of cold resistance and comprehensively evaluate the cold resistance of blueberry varieties,one‑year‑old shoots of five varieties of blueberry,Blomidon,Northland,Bluecrop,Misty and Choice,were selected as materials. The relative electrical conductivity,peroxidase(POD) activity,superoxide dismutase(SOD) activity,malondialdehyde(MDA) and free proline content were studied under low temperature treatment(-10,-15,-20,-25,-30,-35,-40℃).The content of soluble sugar,reducing sugar,soluble protein,starch,cellulose,fructose,glucose,sucrose,total water,free water were detemined,and bound water content,free water content/total water content and bound water content/total water content were calculated. The cold resistance of different blueberry varieties was evaluated by principal component analysis. The results showed that with the decrease of temperature,the relative electrical conductivity and MDA content of shoots of five blueberry varieties increased gradually,showing an“S”shaped curve;POD activity and SOD activity showed a unimodal trend;The content of free proline increased gradually.Blomidon,Northland and Bluecrop had higher soluble total sugar,reducing sugar,glucose,fructose,sucrose,starch,cellulose and soluble protein contents;The total water content,free water content and free water content/total water content of Blomidon were lower;The total water content,free water content and free water content/total water content of Misty were higher,and bound water content/total water content was lower. Relative electrical conductivity,MDA,soluble protein,reducing sugar,soluble total sugar,fructose,free water,bound water content and POD activity could be used as indicators to evaluate the cold resistance of blueberry varieties. Through comprehensive analysis,the cold resistance of the five blueberry varieties tested was determined to be Blomidon,Northland,Bluecrop,Choice and Misty in order from strong to weak.

Key words: Blueberry, Low temperature treatment, Physiological response, Cold resistance

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