Table 2 Median survival time (time at which ≤50% of the berries remained intact, i.e., nonsplit) of ‘Concord’ grape berries at blue and ripe developmental stages when the berries were immersed in cell wall manipulation solutions

From: Cuticle and skin cell walls have common and unique roles in grape berry splitting

 

Blue

Ripe

Blue vs. Ripe

Treatmentx

Time (min)

p

Time (min)

p

p

Control

180

Ref. y

135

Ref.

<0.05

Stiffening

315

<0.001z

225

0.11

<0.01

Loosening 1

105

<0.001

75

<0.05

<0.1

Loosening 2

60

<0.001

30

<0.001

<0.05

  1. xAll treatment solutions were based on 50 mM sodium citrate buffer at pH 3.3. Control: buffer solution. Stiffening: 50 mM hydrogen peroxide (H2O2) added. Loosening 1 & 2: 50 mM H2O2 + 50 mM ascorbate added. Loosening 2 received 15 min pre-treatment in 1 mM FeSO4. The other treatments received 15 min pre-treatment in the buffer.
  2. yThe control for blue and ripe was used as the reference for comparisons within stages.
  3. zPaired comparisons by Gehan–Breslow–Wilcoxon test.
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