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. 2020 Oct 29;9(11):2378. doi: 10.3390/cells9112378

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Effects of trehalose injection into buds nearing bud break on bunch characteristics in the 2020 growing season. Ten grapevine buds nearing bud break (Eichhorn–Lorenz Stage 3) were treated with 10% trehalose or water using a microsyringe or an atomizer on 8 April 2020. Young shoots (Eichhorn–Lorenz Stages 5–7) from the buds were again treated with trehalose or water using an atomizer 10 days post first treatment. Twenty bunches from ten shoots (two bunches/shoot) were collected at harvest (Eichhorn–Lorenz Stage 38). (A) Photograph of bunches at harvest. (B) Photograph of inflorescences. (C) Bunch weight. (D) Bunch length. (E) Number of berries per bunch. (F) Weight of ten berries. (G) Number of pedicels per inflorescence. Bars indicate means ± standard deviations of twenty bunches. * p < 0.05 compared with control (Dunnett’s test). ** p < 0.01 compared with control (Dunnett’s test). Control, non-treated grapevines. H2O-I, water-injected grapevines. Tre-I, trehalose-injected grapevines.