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This article in AJ

  1. Vol. 62 No. 6, p. 746-748
    Received: Mar 6, 1970

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Wheat Seed Protein: Chemical Influence on and Relationship to Subsequent Growth and Yield in Michigan and Mexico1

  1. S. K. Ries,
  2. O. Moreno,
  3. W. F. Meggitt,
  4. C. J. Schweizer and
  5. S. A. Ashkar2



Simazine [2-chloro-4,6-bis (ethylamino)-s-triazine] and terbacil [3-tert.butyl-5-chloro-6.methyluracil] were applied at subherbicidal rates as protein and growth regulatrs to wheat at two Michigan locations in 1968 and 1969 and at Ciudad Obregon, Mexico in 1969. Different N levels were used at all locations. Winter wheat from Michigan and spring wheat from Mexico were planted at two Michigan locations to determine the effect of herbicide and N treatments on the growth, yield, and protein content of the second generation.

Neither supplemental N nor herbicides increased the yield and protein content in all experiments. Nitrogen increased both the yield and protein content in three out of the four tests. Subherbicidal applications increased the protein content in all tests and also the yield in two tests.

Increases in seed protein due to both herbicide and N applications were reflected in higher yields the next generation in all three Michigan field experiments. Yield was directly correlated with seed protein content, but not with seed size. In one test in Mexico the effect of protein in the seed on the next generation was eliminated by 120 kg N/ha applied at time of planting.

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