Natural Cross-Fertilization in Veronia anthelmintica (L.) Willd1
- C. D. Berry,
- K. J. Lessman and
- G. A. White2
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.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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