Calcium and Boron Foliar Fertilizer to Relieve Cracking of 'Liuyuezao' Pummelos.

ABSTRACT: 'Liuyuezao' pummelo is highly prone to cracking, which seriously affects its quality. The aim of this study was to illustrate the effect of foliar sprays of calcium (Ca) and boron (B) and their combined treatments on the fruit cracking and quality of 'Liuyuezao' pummelos during the fruit expansion period (40-55 days after flowering). Analysis of 12 mineral elements of the pericarp by ICP-MS revealed that the three treatments significantly increased the content of calcium and boron in the corresponding pericarp. These treatments effectively reduced the enzyme activities of pectin methylesterase (PME), polygalacturonase (PG), pectin lyase (PL), β-galactosidase (β-Gal), and cellulase (Cx) in the peel and down-regulated the expression of corresponding cell wall-degrading enzyme genes. Calcium,

SUBMITTER: Du K 

PROVIDER: S-EPMC11854133 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature