Abstract
The aim of this study is to establish a binary logistic regression method to evaluate and select cucumber cultivars (Cucumis sativus L.) with a longer postharvest shelf life. Each sample was evaluated for commercial quality (fruit aging, weight loss, wilting, yellowing, chilling injury, and rotting) every 7 days of storage. Simple and multiple binary logistic regression models were applied in which the dependent variable was the probability of marketability and the independent variables were the days of storage, cultivars, fruit weight loss, and months of evaluation. The results showed that cucumber cultivars with a longer shelf life can be selected by a simple and multiple binary logistic regression analysis. Storage time was the main determinant of fruit marketability. Fruit weight loss strongly influenced the probability of marketability. The logistic model allowed us to determine the cucumber weight loss percentage over which a fruit would be rejected in the market.
Highlights
The production and marketability of cucumber (Cucumis sativus L.) for fresh consumption is very important throughout the world [1,2]
Simple binary logistic regression analyses were conducted for each cucumber cultivar to Simplethe binary logistic regression analyses were conducted for eachstorage
The results for logistic regression models adjusted for all LET cucumber cultivars are Theinresults theFigure simple regression adjustedcultivars for all LET
Summary
The production and marketability of cucumber (Cucumis sativus L.) for fresh consumption is very important throughout the world [1,2]. The greatest losses of fruit and vegetable supply chains occur during postharvest and distribution. The losses in fruits and vegetables in Europe from the beginning of postharvest until reaching the consumer are 36% [3]. Losses in horticultural products can occur throughout the process from harvesting through handling, storage, processing, and marketing to the consumer [4,5,6]. The main causes of postharvest losses and poor quality for cucumbers are overmaturity at harvest, rot, water loss (wilting), chilling injury, decay, loss of green color (i.e., chlorophyll), yellow and orange spots, bruises, and other mechanical injuries [10,11,12]
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