Exogenous cytokinin application to Actinidia chinensis var. deliciosa 'Hayward' fruit promotes fruit expansion through water uptake.

ABSTRACT: Exogenous application of a cytokinin-like compound forchlorfenuron (CPPU) can promote fruit growth, although often at the expense of dry matter (DM), an important indicator of fruit quality. Actinidia chinensis var. deliciosa 'Hayward' fruit are very responsive to CPPU treatments, but the mechanism underlying the significant fruit weight increase and associated decrease in DM is unclear. In this study, we hypothesised that CPPU-enhanced growth increases fruit carbohydrate demand, but limited carbohydrate supply resulted in decreased fruit DM. During fruit development, CPPU effects on physical parameters, metabolites, osmotic pressure and transcriptional changes were assessed under conditions of both standard and a high carbohydrate supply. We showed that CPPU increased fruit

SUBMITTER: Nardozza S 

PROVIDER: S-EPMC5605667 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature