摘要
以"秦美"猕猴桃为试材,于盛花期后28 d,分别用质量浓度为5,10和20 mg/L的氯吡脲(1-(2-chloropyridin-4-yl)-3-phenylurea,CPPU)进行蘸幼果处理,蘸果时间3~5 s,清水蘸果作为对照,研究CPPU处理对猕猴桃采后贮藏品质及呼吸生理的影响。结果表明:CPPU处理的正效应是能显著增加果实的单果重及亩产量,负效应是使果实的果形指数变小,果实畸形率增加;果实硬度、可溶性固形物含量、可滴定酸含量、VC及叶绿素含量等采后品质指标随着处理浓度的增大均有不同程度的降低,且果实呼吸速率和乙烯释放速率加快,正负效应均与CPPU剂量呈正相关,负效应大于正效应;5 mg/L CPPU处理对果实品质及呼吸生理的影响相对较小。CPPU处理降低了秦美猕猴桃采后品质及耐藏性,建议在生产中禁止使用或使用质量浓度不超过5 mg/L。
The effects of forchlorfenuron（N-2-chloro-4-pyridyl-N‘-phenylurea） treatment on postharvest storage quality and respiratory physiology in Qinmei kiwifruit were studied by dipping young fruit with 5, 10 and 20 mg/L CPPU at 28 days after full bloom when dipping with water was set as control. The results show that the positive effect of CPPU treatment was significantly increased the fruit weight and yield per mu, the negative effect is the fruit shape index decreased, fruit malformation rate was increased, the fruit firmness, soluble solids content, titratable acid content, VC and chlorophyll content of postharvest quality indicators all decreased in different degrees, and the respiration rate and ethylene release rate, both positive and negative effects were positively correlated with CPPU dose, and the negative effect is greater than the positive effect. The effect of 5 mg/L CPPU treatment on fruit quality and respiratory physiology is relatively small. CPPU treatment reduced fruit postharvest quality and storability, the proposed ban on the use in the production or use of a concentration of not more than 5 mg/L.
作者
李圆圆
罗安伟
苏苗
李琳
蔺志颖
宋俊奇
LI Yuanyuan;LUO Anwei;SU Miao;LI Lin;LIN Zhiying;SONG Junqi(College of food science and Engineering,Northwest A＆F University（Yangling 712100)
出处
《食品工业》
CAS
北大核心
2018年第7期198-203,共6页
The Food Industry
基金
陕西省农业科技创新与攻关项目(2015NY051)
陕西省重点研发计划农业领域重点项目(2018ZDXM-NY-056)
杨凌示范区产学研用协同创新重大项目(2018-CXY-04)
