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中国农学通报 ›› 2022, Vol. 38 ›› Issue (10): 134-140.doi: 10.11924/j.issn.1000-6850.casb2021-0688

所属专题: 生物技术 植物保护 园艺

• 食品·营养·检测·安全 • 上一篇    下一篇

BTH处理对火龙果采后抗病性及贮藏品质的影响

鲍远放1(), 张绿萍2, 郑伟2, 王彬2()   

  1. 1贵州大学农学院,贵阳 550025
    2贵州省农业科学院果树科学研究所,贵阳 550006
  • 收稿日期:2021-07-14 修回日期:2022-01-21 出版日期:2022-04-05 发布日期:2022-05-23
  • 通讯作者: 王彬
  • 作者简介:鲍远放,男,1997年出生,安徽六安人,研究生在读,研究方向:果树栽培及采后生理。通信地址:550006 贵州省果树科学研究所,E-mail: baoyuanfang123@163.com
  • 基金资助:
    贵州省优秀青年科技人才培养计划“火龙果提质增效关键技术集成与示范”(黔科合平台人才[2019]5642(黔科合平台人才[2019]5642);贵州省科技成果应用及产业化计划“火龙果主要病虫害绿色防控技术集成与转化应用”(黔科合成果[2020]1Y050(黔科合成果[2020]1Y050)

Effects of BTH Treatment on Postharvest Disease Resistance and Storage Quality of Pitaya

BAO Yuanfang1(), ZHANG Lvping2, ZHENG Wei2, WANG Bin2()   

  1. 1College of Agriculture, Guizhou University, Guiyang 550025
    2Institute of Pomology, Guizhou Academy of Agricultural Sciences, Guiyang 550006
  • Received:2021-07-14 Revised:2022-01-21 Online:2022-04-05 Published:2022-05-23
  • Contact: WANG Bin

摘要:

研究旨在探索采后浸泡苯并噻二唑(BTH)处理对火龙果采后果实抗桃吉尔霉(Gilbertella persicaria)能力、贮藏品质和抗病相关酶活性的影响,为火龙果采后贮藏提供理论和实践依据。以火龙果‘软枝大红’为材料,采用0、50、100、150、200 mg/L BTH浸泡采后火龙果果实,观察接种桃吉尔霉病斑面积及病情指数变化、采后腐烂时间和腐烂率变化,综合比较筛出最佳BTH浓度,随后进一步测定贮藏期间对照和最佳处理浓度的品质和相关酶活性的变化。与对照相比,100 mg/L BTH浸泡处理可以显著降低火龙果果实接种桃吉尔霉后的病情指数(P<0.05),提高总糖含量、降低可滴定酸含量,提升贮藏期间CAT、SOD、POD、CHI、GLU、PAL活力。100 mg/L BTH浸泡处理对采后火龙果果实抗桃吉尔霉效果最佳,可提高火龙果果实的抗病、抗氧化相关酶活性,提升贮藏品质和延长贮藏时间。

关键词: 火龙果, 苯并噻二唑, 采后, 抗病性, 贮藏品质

Abstract:

The aim of this study is to explore the effects of postharvest benzothiadiazole (BTH) soaking on pitaya resistance to Gilbertella persicaria, storage quality and the activities of disease resistance related enzymes, so as to provide a theoretical and practical basis for the postharvest storage of pitaya fruits. The fruits of pitaya variety ‘Ruanzhi Dahong’ were used as materials for soaking with BTH at 0, 50, 100, 150 and 200 mg/L. And by observing the changes of the lesion area and disease index of the fruits inoculated with G. persicaria, and postharvest decay time and decay rate, the best BTH concentration was comprehensively screened out. Then the fruit quality and related enzyme activities of the control and under the optimal treatment concentration were further determined during storage. Compared with the control group, 100 mg/L BTH postharvest soaking treatment could significantly reduce the disease index of pitaya fruit inoculated with G. persicaria (P<0.05), significantly increase the total sugar content, reduce the titratable acid content, and enhance the activities of CAT, SOD, POD, CHI, GLU, and PAL. In summary, 100 mg/L BTH postharvest soaking treatment had the best effect on the resistance of pitaya fruits to G. persicaria, it could boost the activities of disease resistance related enzymes and antioxidant enzymes, improve the storage quality, and prolong the storage time of pitaya fruits.

Key words: pitaya, benzothiadiazole, postharvest, disease resistance, storage quality

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