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GRAPEVINE LEAF DEVELOPMENT IN RELATIONSHIP TO POTASSIUM CONCENTRATION AND LEAF DRY WEIGHT AND DENSITY
Author(s) -
Freeman Brian M.,
Kliewer W. Mark
Publication year - 1984
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1984.tb12517.x
Subject(s) - lamina , dry weight , biology , potassium , botany , horticulture , chemistry , organic chemistry
The plastochron index (PI) was developed for Vitis and related to lamina K + concentration. The concentration of lamina K + declined with increase in leaf age and PI, whereas total lamina K + content increased. Part of the decline in lamina K + concentration was attributed to an initial decrease in lamina density. Therefore, expression of K + concentration on a leaf area basis is recommended rather than on a dry weight basis.