Calcium accumulation indeliciousapple fruit¹

Abstract

Seasonal patterns of fruit growth and calcium (Ca) accumulation in 'Delicious' apple fruit were observed over four years and four growing regions. Although temperature and precipitation varied greatly, fruit consistently accumulated Ca in a quadratic fashion, with maximum uptake occurring early in the season. Little Ca accumulated in fruit during the three weeks prior to harvest. Under some conditions, fruit appeared to lose Ca during this time. Loss of fruit Ca was not closely associated with precipitation. Calcium uptake was greatest during periods of high evaporative demand.

Relationships between Fruit Mineral Nutrients Concentrations and Some Fruit Quality Attributes in Greenhouse Cucumber

“…Many studies have reported the positive effects of nitrogen (N; Casero et al, 2004;Fallahi et al, 1985;Flores et al, 2004;Locascio et al, 1985), calcium (Ca; Fallahi et al, 1985;Fallahi and Simons, 1996;Cline et al, 1991), potassium (K; Fallahi et al, 1985;Fallahi and Simons, 1996), and phosphorus (P; Fallahi et al, 1985) concentration on the fruit quality values. Much greater attention has been attributed to the ratio of nutrients as compared to the concentration of individual mineral elements on fruit quality (Casero et al, 1989;Tomala, 1997).…”

Meteorological Factors and Calcium Concentration on Browning of a ‘Fuyu’ Persimmon Fruit

“…Increasing humidity along with declined evaporation and reduced Ca uptake of apple fruits (Cline et al, 1991) significantly stimulated browning in fruits during growing seasons ( Figure 3A). Rainfall is usually concentrated in South Korea during the summer season, and an excessive soil moisture dramatically inhibited Ca uptake (Faust, 1989).…”

Die Kalziumversorgung von Äpfeln in Abhängigkeit von pflanzlichen Regelungsvorgängen

“…Hohe RF hemmte auch das Eindringen von Ca, das auf die Fruchtschale von ¾pfeln aufgebracht worden war (van Goor 1973). Cline et al (1991) stellten fest, dass Evaporation (Verdunstung von freien Flächen aus) und Lufttemperatur signifikant mit der Ca-Aufnahme korreliert waren, aber nur zu etwa 10% an den Unterschieden im Ca-Gehalt beteiligt waren.…”

“…Shear (1980) Cline et al (1991), dass die CaAnreicherung in ¾pfeln mehr von physiologischen Faktoren innerhalb der Pflanze oder der Frucht beeinflusst werden könne als durch Umweltfaktoren.…”