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Effect of Light Intensity on Ascorbic Acid Content of Turnip Greens 1
Author(s) -
Hamner K. C.,
Parks R. Q.
Publication year - 1944
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1944.00021962003600040001x
Subject(s) - ascorbic acid , citation , horticulture , mathematics , agricultural science , library science , political science , computer science , environmental science , biology
have found differences in ascorbic acid content of from 67 to 422 mg per ~oo grams of fresh weight. In recent work at this laboratory with a single variety of turnips, variations similar to those above have been noted in turnips growing under a variety of conditions. In a recent review (5) of the factors causing variation in the ascorbic acid content of plants, a number of citations indicated the importance of light intensity. In an attempt to account for the wide variations in ascorbic acid content which occur in turnip greens, several experiments have been conducted in the field and under controlled conditions designed to study in detail the effects of environmental conditions on ascorbic acid content. Although a detailed report of all of this work is in the course of preparation, the results which have been obtained with respect to the effects of light demonstrated such a striking relationship between light intensity and ascorbic acid content, and the magnitude of the fluctuations in ascorbic acid was so great that it seemed worthwhile to make a brief preliminary report.