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This article in CS

  1. Vol. 10 No. 1, p. 104-105
     
    Received: June 26, 1969
    Published: Jan, 1970


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doi:10.2135/cropsci1970.0011183X001000010040x

Natural Cross-Fertilization in Veronia anthelmintica (L.) Willd1

  1. C. D. Berry,
  2. K. J. Lessman and
  3. G. A. White2

Abstract

Abstract

Vernonia anthelmintica (L.) Willd. was found to be self-fertile but partially cross-pollinated in contrast to the reported self-sterility of species of Vernonia occurring naturally along the southeastern Coastal Plain of the United States. The vernonia flower has characteristics which should promote self-pollination. A recessive white-flower character was used to test for cross-pollination. No crossing occurred when white-flowered plants were grown with the normal violet-flowered plants in the greenhouse. When the two types were grown together in the field, however, at least 13% crossing was indicated by the presence of violet-flowered plants among the progenies of the white-flowered maternal parents. Pollen for natural crossing is thought to be insect borne.

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