Determination of maximum permissible levels of selected chemicals that exert toxic effects on plants of economic importance in Illinois, by J. H. Yopp, W. E. Schmid [and] R. W. Hol... von Yopp, John H

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Promotion of plant growth by polymers of lactic acid von KINNERSLEY, A. M, SCOTT, T. C, YOPP, J. H, WHITTEN, G. H

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A brassinosteroid-cytokinin interaction on ethylene production by etiolated mung bean segments von Schlagnhaufer, C, Arteca, R.N. (Pennsylvania State Univ. (USA). Dept of Horticulture), Yopp, J.H

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Effects of Brassin-Complex on Auxin and Gibberellin Mediated Events in the Morphogenesis of the Etiolated Bean Hypocotyl von YOPP, JOHN H., COLCLASURE, G. CRAIG, MANDAVA, NAGABHUSHANAM

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Plasma membrane lipid composition of the halophilic cyanobacterium Aphanothece halophytica von RITTER, D, YOPP, J. H

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Brassinolide, a growth-promoting steroidal lactone von Yopp, John H., Mandava, N. Bhushan, Sasse, J. M.

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Brassinolide, a growth-promoting steroidal lactone von Mandava, N. Bhushan, Sasse, Jenneth M., Yopp, John H.

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Studies of the Azolla [Pteridophyta]-Anabaena [Algae] symbiosis using Azolla mexicana. I. Growth in nature and laboratory von Holst, R.W, Yopp, J.H

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Brassinolide, a growth‐promoting steroidal lactone: I. Activity in selected auxin bioassays von Yopp, John H., Mandava, N. Bhushan, Sasse, J. M.

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Brassinolide, a growth-promoting steroidal lactone. II. Activity in selected gibberellin and cytokinin bioassays von Mandava, N.B, Sasse, J.M, Yopp, J.H

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Evidence that brassinosteroid stimulates auxin-induced ethylene synthesis in mung bean hypocotyls between S-adenosylmethionine and 1-aminocyclopropane-1-carboxylic acid von Schlagnhaufer, C, Arteca, R.N. (Pennsylvania State Univ. (USA). Dept. of Horticulture), Yopp, J.H

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Effects of Selected Inhibitors of RNA and Protein Synthesis on Brassinosteroid-induced Responses in Mung Bean Epicotyls von Bhushan Mandava, N., Thompson, Malcolm J., Yopp, John H.

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Relationship of steroidal structure to ethylene production by etiolated mung bean segments [brassinosteroid] von Arteca, R.N, Bachman, J.M, Yopp, J.H, Mandava, N.B

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CELL WALL CONSTITUENTS OF APHANOTHECE HALOPHYTICA (CYANOPHYTA)1 von Jones, Jay H., Yopp, John H.

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CELL WALL CONSTITUENTS OF APHANOTHECE HALOPHYTICA (CYANOPHYTA)1 von Jones, Jay H., Yopp, John H.

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Absorption and distribution of flurazole and acetochlor in grain sorghum von Jackson, Lucinda A., Yopp, John H., Kapusta, George

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Cell wall constituents of Aphanothece halophytica (Cyanophyta) [Bluegreen algae] von Jones, Jay H., Yopp, John H.

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Effect of Several Pesticides on the Growth and Nitrogen Assimilation of the Azolla-Anabaena Symbiosis von Holst, Robert W., Yopp, John H., Kapusta, George

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Galactose-induced Ethylene Evolution in Mung Bean Hypocotyls: A Possible Mechanism for Galactose Retardation of Plant Growth von COLCLASURE, G. CRAIG, YOPP, JOHN H.

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Ion metabolism in a halophilic blue green alga, Aphanothece halophytica von Miller, D.M, Jones, J.H, Yopp, J.H, Tindall, D.R, Schmid, W.E

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