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Conditions Affecting Germination of the Megaspores of Isoetes Lithophila
American Journal of Botany
Vol. 24, No. 7 (Jul., 1937), pp. 454-456
Published by: Botanical Society of America, Inc.
Stable URL: http://www.jstor.org/stable/2436432
Page Count: 3
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The action of indole acetic, indole butyric, and naphthalene acetic acids on root growth of Lupinus albus seedlings was studied with particular reference to the effects of very dilute concentrations of the drugs and short exposures thereto. It was found that growth of roots of Lupinus albus seedlings was definitely stimulated after a brief exposure to a weak solution of any of the three chemicals studied. On the contrary, longer exposures to the same concentration or exposures for a brief period to stronger concentrations invariably produced a toxic or inhibitory effect on root growth of Lupinus albus.
American Journal of Botany © 1937 Botanical Society of America, Inc.