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POLLINATION BIOLOGY, SELF‐INCOMPATIBILITY, AND STERILITY IN IPOMOEA PANDURATA (L.) G. F. W. MEYER (CONVOLVULACEAE)
Author(s) -
Stucky Jon M.,
Beckmann Robert L.
Publication year - 1982
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1982.tb13346.x
Subject(s) - biology , sterility , convolvulaceae , pollination , ipomoea , pollen tube , botany , pollinator , pollen , apidae , ovary , horticulture , hymenoptera , genetics
Ipomoea pandurata rarely produces seed. Sporophytic self‐incompatibility is a secondary factor contributing to the reduced seed production because the principal pollinators, Bombus pennsylvanicus (Apidae) and Melitoma taurea (Anthophoridae), effect cross‐pollination in most populations. Sterility, expressed as pollen tube failure in the style and as a sterility mechanism in the ovary, is the primary factor accounting for reduced seed production. It is difficult to reconcile the extensive geographical distribution of I. pandurata with this sterility.