CHANGES IN CHEMICAL COMPOSITION OF THE LEAVES AND ROOTS OF RED KIDNEY BEAN PLANTS TREATED WITH 2, 4-DICHLOROPHENOXYACETIC ACID

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Abstract
The leaves of the red kidney bean plants treated with 2,4-D contained lower percentages of protein and of most of the amino acids in the sample and in the crude protein than did the controls. The percentages of protein, and the amino acids valine, histidine and arginine in the sample and in crude protein were almost the same in the roots of the treated and non-treated plants while the other amino acids were slightly less in the roots of the treated plants. The reduction of most of the amino acids in the root and leaf tissue of the treated plants may be due in part to the translocation of these substances to the stem tissue. A depletion of non-reducing sugar was observed in both the leaves and roots of the treated plants. There was no significant change in the percentage of reducing sugar. The percentages of starch, polysaccharide, crude fiber, ash, ether extract, unsaponifiable material and fatty acids were practically the same for both the leaves and roots of the treated and non-treated plants.