Introgressive Hybridization between Ipomoea trichocarpa and Ipomoea lacunosa (Convolvulaceae)

Abstract

Artificial crosses between Ipomoea lacunosa and I. trichocarpa produced intermediates that resembled plants found growing wild. Back-crossing of the artificial hybrids yielded an array of progeny that was also similar to wild plants. The hypothesis is presented that I. lacunosa and I. trichocarpa have been experiencing introgressive hybridization.