RELATIONSHIP BETWEEN TEMPERATURE AND COLOR DEVELOPMENT IN THREE RED DELICIOUS APPLE STRAINS
| Autor: | S. Singha, T. A. Baugher, E. C. Townsend |
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| Rok vydání: | 1990 |
| Předmět: | |
| Zdroj: | HortScience. 25:1100g-1100 |
| ISSN: | 2327-9834 0018-5345 |
| DOI: | 10.21273/hortsci.25.9.1100g |
| Popis: | The objective of this study was to determine the relationship between temperature and color development in 3 strains of Red Delicious apple (Malus domestica Borkh). The strains `Scarlett Spur', `Ultrastripe' and `Starkrimson' were chosen based on variation in coloration. Chromaticity values (L* a* b*) were measured with a Minolta CR-200b calorimeter on 5 tagged apples on each of 4 trees of each strain. Measurements were made at approximately the same location on each fruit 23 times from July 11 through September 25, 1989. Differences in a*/b* ratio among strains were observed as early as the first sampling date; with `Scarlet Spur' having the highest ratio and `Starkrimson' the lowest. These differences were maintained for most the growing season. Temperature below 21C tended to enhance color development, whereas temperature above 21C reduced coloration. Temperature affected all 3 strains similarly. |
| Databáze: | OpenAIRE |
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