In Situ Differences in Fruit Color Development of Six ‘Delicious’ Apple Strains
DOI:
https://doi.org/10.71318/apom.1994.48.2.103Abstract
Changes in fruit color of six ‘Delicious’ apple ( Malus domesticaBorkh.) strains were recorded in situ from 27 July through 21 September 1988 (149 days after full bloom). Fruit color was measured with a Minolta CR-200b portable tristimulus colorimeter at the midpoint between the stem and calyx end on fruit directly exposed to sunlight. Significant differences in color were observed among strains even at the first measurement date. Strains which had a darker red coloration at harvest tended to initiate earlier red color development. Strains varied in their rate of color development. In most strains rapid color development occured between the middle of August and the first week of September, by which time the strains tended to approach their ultimate color.
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