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首页> 外文期刊>Acta Horticulturae >Relationship between Dry Matter and Ripening Time in 'Hass' Avocado
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Relationship between Dry Matter and Ripening Time in 'Hass' Avocado

机译：“ Hass”鳄梨干物质与成熟时间的关系

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摘要

'Hass' avocado fruit harvested early in the season take a longer time to ripen than fruit harvested later in the season. As the harvest season progresses, the dry matter content of fruit increases. Dry matter can be quantified by near-infrared spectroscopy (NIR). The objective of this study was to determine the relationship between fruit dry matter content and the time taken to ripen, and whether NIR can be used to grade fruit for time to ripen. 'Hass' avocado fruit were taken from field bins on theday of harvest from three orchards on three occasions: early, mid and late season. At each harvest, 150 fruit, approximately count 23, were taken per orchard, of which 100 fruit were used to determine time to ripen/dry matter relationship and estimate dry matter by NIR, and 50 fruit were used for NIR calibration. Fruit were allowed to ripen at 20°C without prior cold storage. Throughout the harvest season there was a relationship between higher dry matter and shorter time to ripen, although there was considerable variability in ripening time at any given dry matter (R~2=0.25). Within a single harvest, with a limited range of dry matter and time to ripen, there was a less clear relationship between dry matter and the rate of ripening. Fruit from different orchards with similar dry matter may have different ripening times. Given the relationships established, it remains to be demonstrated whether NIR could be routinely used to segregate fruit into commercially useful ripening categories.
机译：与本季后期收获的果实相比，本季早期收获的“无头”鳄梨果实成熟时间更长。随着收获季节的进行，水果的干物质含量增加。干物质可以通过近红外光谱法（NIR）进行定量。这项研究的目的是确定水果干物质含量与成熟时间之间的关系，以及是否可以使用NIR对成熟时间进行水果分级。 “哈斯”鳄梨果实是在收获当天从三个果园的三种情况下从田间垃圾箱中取出的：早期，中期和晚期。每次收获时，每个果园收获150个水果，大约计数23个，其中100个水果用于确定成熟/干物质关系并通过NIR估算干物质，而50个水果用于NIR校准。允许水果在20°C时成熟，无需事先冷藏。在整个收获季节，干物质含量较高和成熟时间较短之间存在一定的关系，尽管在任何给定的干物质条件下，成熟时间存在很大差异（R〜2 = 0.25）。在单次收获中，干物质和成熟时间的范围有限，干物质与成熟速度之间的关系不太清楚。来自不同果园的具有相似干物质的水果可能具有不同的成熟时间。鉴于已建立的关系，仍有待证明是否可以常规使用NIR将水果分为商业上有用的成熟类别。

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