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This article in CS

  1. Vol. 11 No. 1, p. 13-16
    Received: Aug 7, 1970

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Morphology of Pubescence in Soybeans and Its Relationship to Plant Vigor1

  1. B. B. Singh,
  2. H. H. Hadley and
  3. R. L. Bernard2



The morphology and performance of near-isogenic lines of soybeans with monogenically different pubescence types were investigated. Hairs of the normal, dense, and sparse types are similar, each consisting of a very long (1- to 3-mm) cylindrical cell with one, two, or three basal cells. Hairs of curly pubescence are similar initially to normal hairs, but then become flat, curl, and tend to fall off. Glabrous plants have hair stubs made up of one to seven nearly isometric cells. Puberulent plant hairs consist of a single elongate (0.1 mm) apical cell with one, two, or three basal cells.

Marked growth differences in the field were associated with differences in infestation by the potato leafhopper (Empoasca fabae (Harris)). Dense pubescent plants grew tallest followed in descending order by normal, sparse, curly, and glabrous types. Yields of lines with normal, dense, and sparse pubescence were similar, and superior to yields of the curly and glabrous lines.

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