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当前位置: 首页 > 文章 > 澳洲青苹果实叶绿素荧光参数与虎皮病相关性 食品科学 2014,35 (10) 258-262
Position: Home > Articles > Correlation of Chlorophyll Fluorescence Parameters with Superficial Scald Development in Granny Smith Apple FOOD SCIENCE 2014,35 (10) 258-262

澳洲青苹果实叶绿素荧光参数与虎皮病相关性

作  者：
周虹燕;任小林;田建文
单  位：
西北农林科技大学园艺学院;宁夏回族自治区科学技术厅;宁夏大学农学院
关键词：
苹果果实;虎皮病;叶绿素荧光参数
摘  要：
研究在冷藏条件((0±1)℃)和常温(22℃)条件下澳洲青苹果实虎皮病的发展与叶绿素荧光参数之间的关系,在贮藏过程中测量最小荧光(Fo)、最大荧光(Fm)、可变荧光(Fv)和光化学效率(Fv/Fm)等叶绿素荧光参数的变化。结果表明:在贮藏过程中对照组果实Fo、Fm和Fv/Fm明显呈下降趋势;1-甲基环丙烯(1-methylcyclopropene,1-MCP)处理对Fo和Fv/Fm的影响明显,在采后0~60d内其变化比较平缓,采后90d后下降速度加快,而对Fm的影响不显著;低氧(LO2)处理对Fo和Fm的影响不明显,而Fv/Fm一直呈下降趋势,当Fv/Fm小于0.7时,果实表面出现褐斑,可推断虎皮病发生在采后90 d左右。另外,1-MCP和LO2处理可显著控制澳洲青苹果实虎皮病的发生。常温(22℃)条件加速了对照组和1-MCP处理组果实荧光参数的变化,随着贮藏时间的延长,Fv/Fm下降,且与虎皮病发病率呈显著负相关。
译  名：
Correlation of Chlorophyll Fluorescence Parameters with Superficial Scald Development in Granny Smith Apple
作  者：
ZHOU Hong-yan;REN Xiao-lin;TIAN Jian-wen;Agricultural College, Ningxia University;College of Horticulture, Northwest A & F University;Science and Technology Department of Ningxia;
关键词：
apple fruit;; superficial scald;; chlorophyll fluorescence parameters
摘  要：
The relationship between chlorophyll fluorescence parameters and the development of superficial scald in Granny Smith apples was studied during postharvest storage at cold (0 ± 1) ℃ or ambient(22 ℃) temperature. Minimal fluorescence (Fo), maximal fluorescence (Fm), variable fluorescence (Fv) and photochemical efficiency (Fv/Fm) were measured during storage periods. The results showed that Fo, Fm and Fv/Fm declined clearly in control fruits over days, and 1-methylcyclopropene (1-MCP) treatment had an effect on Fo and Fv/Fm, both of which displayed relatively gentle changes during the first 60 d of storage, and declined rapidly from the 90th d onwards, while no significant effect on Fm was observed. Low-oxygen treatment had no obvious effect on Fo or Fm, but resulted in a continuous decrease in Fv/Fm, which at a level less than 0.7 indicated the appearance of brown spots on the fruit surface. Thus, we inferred that superficial scald occurred at about 90 d postharvest and could be significantly prevented from occurring by 1-MCP and low-oxygen treatment. Postharvest storage at ambient temperature accelerated the rate of change in fluorescence parameters in control and 1-MCP treatment groups, and Fv/Fm declined with increasing storage time, which was significantly negatively correlated with the incidence of superficial scald.

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