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Studies on the Phloem of the Dicotyledons. II. The Evolution of the Sieve-Tube

✍ Scribed by Ansel F. Hemenway


Book ID
123756459
Publisher
The University of Chicago Press
Year
1913
Weight
1015 KB
Volume
55
Category
Article
ISSN
0006-8071

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The cotyledons of castor bean (Ricinus communis L.) act as absorption organs for amino acids, which are supplied to the medium. The analysis of the sieve-tube sap, which exudes from the cut hypocotyl, demonstrated the ability of the cotyledons to load particular amino acids into the phloem and to re