Fruiting position during development of ‘Nules Clementine’ mandarin affects the concentration of K, Mg and Ca in the flavedo

Investigating the involvement of ABA, ABA catabolites and cytokinins in the susceptibility of ‘Nules Clementine’ mandarin to rind breakdown disorder

“…A postharvest physiological rind disorder of ‘Nules Clementine’ mandarin ( Citrus reticulata Blanco) fruit, commonly referred to as rind breakdown disorder (RBD), is among several commercially important defects affecting the citrus industry . The susceptibility of fruit to RBD has been hypothesized to be related to rind quality .…”

“…8 A postharvest physiological rind disorder of 'Nules Clementine' mandarin (Citrus reticulata Blanco) fruit, commonly referred to as rind breakdown disorder (RBD), is among several commercially important defects affecting the citrus industry. [10][11][12] The susceptibility of fruit to RBD has been hypothesized to be related to rind quality. 2,10,12 Rind quality of citrus fruit is defined as the sum of many physical and biochemical components including primary and secondary metabolites which influence rind susceptibility to disorders.…”

Foliar Calcium Applications for Controlling Fruit Disorders and Storage Life in Deciduous Fruit Trees

“…Additionally, inappropriate sampling methods due to the significant variation of Ca among individual fruit were also indicated in kiwifruit 12 . In evergreen fruit trees, Cronje et al 8 showed that the canopy position influenced mineral nutrient accumulation patterns in the flavedo of mandarins. Outside fruit flavedo accumulated higher concentrations of Ca and Mg, but inside fruit flavedo (shaded fruit) accumulated higher levels of K compared with outside fruit flavedo.…”

Fruit Splitting in Citrus

“…Growth habit and resulting tree shape of some citrus cultivars as well as ineffective pruning by producers stimulate the development of variation in microclimate within a tree canopy that could lead to the development of fruit that are potentially more prone to physiological disorders such as rind breakdown of 'Nules Clementine' mandarin (Cronjé et al 2011).…”

“…Therefore, any deficiency of Ca in the soil, or any factor hampering the transport of Ca (e.g., low VPD) especially during critical periods of cell division and growth, will lead to Ca deficiency in the fruit. Such a deficiency or imbalance could lead to physiological disorders involving the rind, namely, rind breakdown of 'Nules Clementine' mandarin (Cronjé et al 2011) and fruit splitting of 'Shogun' mandarin (Sdoodee and Chiarawipa 2005). The optimum leaf Ca in citrus production is 2.5-5.5% (CRI Production Guidelines 2007).…”