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Pre- and Postharvest Factors Control the Disease Incidence of Superficial Scald in the New Fire Blight Tolerant Apple Variety “Ladina”
Agronomy ( IF 3.949 ) Pub Date : 2020-03-27 , DOI: 10.3390/agronomy10040464
Laura Dällenbach , Thomas Eppler , Simone Bühlmann-Schütz , Markus Kellerhals , Andreas Bühlmann

Superficial scald is a physiological disorder that develops during cold storage affecting apples and causes substantial market losses. Malus × domestica cv. Ladina, a new scab resistant and fire blight tolerant variety, commercialized in 2012, shows a physiological disorder similar to superficial scald after storage. Here, we used different pre- and postharvest approaches to characterize the occurrence of these superficial scald symptoms in Malus × domestica cv. Ladina. Over a period of seven years, fruits from multiple orchards were stored for five to seven months and the occurrence of superficial scald was assessed in fruits after cold storage and controlled atmosphere (CA) storage. Apples picked at different stages of ripeness within the same year differed in superficial scald development. Additionally, superficial scald differed significantly between years and locations, strongly suggesting that maturity at harvest, weather during the growing season, and orchard management play important roles in scald occurrence. Treatment with 1-methylcyclopropene (1-MCP) after harvest, and storage in a dynamically controlled atmosphere (DCA) significantly reduced the occurrence of superficial scald, whereas storage under ultralow oxygen concentrations (ULO) showed mild but not significant effects. Low calcium concentrations in the fruit flesh and peel were associated with stronger superficial scald occurrence.

中文翻译:

收获前和收获后的因素控制着新的耐火性苹果品种“ Ladina”中表皮烫伤的发病率

表皮烫伤是一种在冷藏期间发展的生理疾病,会影响苹果并造成巨大的市场损失。海棠×家养简历 Ladina是一种新的抗赤霉病和火白叶枯病的品种,于2012年商品化,显示出一种生理疾病,类似于储藏后的表皮烫伤。在这里,我们使用了不同的前和采后接近表征这些虎皮病症状的发生海棠×家蝇简历。拉迪纳。在七年的时间里,将多个果园的果实保存了五至七个月,并评估了冷藏和可控气氛(CA)储存后果实表面的烫伤情况。同一年在不同成熟阶段采摘的苹果在表皮烫伤方面有所不同。此外,表面烫伤在年份和地点之间存在显着差异,强烈表明收获时的成熟度,生长季节的天气以及果园管理在烫伤发生中起重要作用。收获后用1-甲基环丙烯(1-MCP)处理,并在动态控制的气氛(DCA)中存储可大大减少表面烫伤的发生,而在超低氧浓度(ULO)下存储则显示出轻微但不明显的影响。
更新日期:2020-03-27
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