Cultivation Conditions Affect the Occurrence of Blossom-end Enlargement in Cucumber

Postharvest blossom-end enlargement (BEE) in summer cucumber has a serious economic effect Japan. Previous studies suggested that BEE is influenced by cultivation conditions and temperature during transportation. In this study, the relationship between postharvest growth parameters plants under various sink–source balances created defoliation fruit thinning was determined using analysis technique. Cucumber (Cucumis sativus L. ‘Taibo I’) seedlings were transplanted into an outdoor field at Ibaraki University 2019, harvested fruits stored plastic bags 27°C. The occurrence of BEE, which scored six days after harvest, positively correlated with air cumulative duration sunshine exposure from flowering to harvesting. Furthermore, high temperatures extended reduced time However, excessive occurrence, most likely because increased harvesting, suggesting early maturation may be one causes BEE. Therefore, principal component performed understand cucumber. when balance inclined towards source. Collectively, these findings indicate temperatures, solar radiation, large leaf area respect number set increase pre-harvest maturity probably related its onset.