Bidirectional movement of labeled tracers in soybean seedlings

A. S. Crafts

Hilgardia, 1967, vol. 37, issue 16

Abstract: Studies on transport mechanism in plants, using soybean seedlings and C14-labeled tracers, show that: 2,4-D* movement is largely restricted to phloem; monuron* movement takes place in xylem and cell walls; amino triazole* moves in phloem, xylem and cell walls; and maleic hydrazide* moves like amino triazole* and may leak from phloem to xylem and thus, circulate in the plant. Applied to epicotyl, 2,4-D* moves into and along the phloem, monuron* into and along the xylem, and amino triazole* and maleic hydrazide* into and along both phloem and xylem. These distribution patterns show selectivity of solute translocation, and support the concept of mass flow as the mechanism responsible for rapid, long-distance transport of foods in the plant.

Keywords: Crop; Production/Industries (search for similar items in EconPapers)
Date: 1967
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