LED lighting and exogenous cytokinin enhance budbreak and winter growth of 'Washington' navel orange in the nursery.

ABSTRACT: Citrus nurseries typically reduce budding activity during winter due to weak growth from short photoperiods and low temperatures. Modern light-emitting diodes (LEDs) and exogenous application of plant growth regulators (PGRs), such as the synthetic cytokinin 6-benzylaminopurine (BA), may mitigate these winter challenges by extending daylength and stimulating budbreak. We report in this paper the effects of different LED spectra and BA on budbreak and growth of 'Washington' navel orange (Citrus × sinensis) grafted on two rootstocks during winter. A 4 × 2 × 2 factorial design was used, including four light levels (NoSL, no supplemental light; FSL, full supplemental light from budding to 12 weeks after budding (wab); BWSL, blue and white supplemental light from budding to 12 wab

SUBMITTER: de Carvalho DU 

PROVIDER: S-EPMC12748169 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature