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This article in CS

  1. Vol. 29 No. 5, p. 1304-1309
    Received: Sept 19, 1988

    * Corresponding author(s):
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The Pit and Antipit in the Genus Glycine

  1. R. W. Yaklich ,
  2. E. L. Vigil and
  3. W. P. Wergin
  1. G ermplasm Quality and Enhancement Lab.
    C limate Stress Lab
    E lectron Microscopy Lab., USDA-ARS, Bldg. 001, Beltsville Agric. Res. Ctr.-West, Beltsville, MD 20705



The structure of the pit and antipit and their location at the interface of the soybean [Glycine max (L.) Merr] seed coat and embryo were recently discussed in relation to seed development. The prevalence of these two structures in soybean and other Glycine species is not known. This study was undertaken to determine the prevalence of the pit and antipit in G. max, G. soja, G. canescens, G. clandestina, G. falcata, G. tabacina, G. tomentella, and G. latifolia. Seeds were dissected in half, viewed by light microscopy, then sputter coated and viewed by scanning electron microscopy (SEM). Also, images from five accessions of G. max, G. soja, G. latifolia, G. tomentella, G. clandestina, and G. tabacina were projected onto an image analyzer and measurements of the antipit were obtained. The shape of the pit and antipit varied within a species and were either elliptical or triangular. The area, height, and depth occupied by the pit and antipit, respectively, also varied among species. In most accessions, the pit was deeply concave, although, in a few accessions the cotyledon surface was nearly flat. Glycine max, G. soja, and G. tomentella had similar pit cells that were at least twice as long as they were wide. Glycine latifolia had the smallest antipit cells and G. max had the largest. The pit and antipit were prevalent in all the Glycine species examined, indicating that these structures are a common feature in the genus Glycine.

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