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Reversal of Nondehiscence of Anthers in Cotton by Foliar Application of Choline Chloride or Urea¹

Synopsis: Acromania and hollow-boll are two naturally occurring nondehiscent-anther disorders in cotton. Cotton plants with either disorder produce dehiscent anthers following applications of choline chloride or urea to cotton leaves. The minimum chemical concentration to induce corrections is 100 micrograms per plant. Poor water penetration, aeration, and high nitrite-ion concentration of the soils are characteristics closely related to the expression of these disorders. The timing of applications with reference to dehiscent flowers, bolls per plant, and seed cotton yields is presented.

² Plant Physiologist, Boll Weevil Research Laboratory, State College, Miss. The soil samples were obtained by Leonard J. Erie, Irrigation Engineer, Soil and Water Conservation Research Division, ARS, USDA.

Received for publication January 17, 1962.