Seed production and dispersal in the Orobanchaceae

Abstract

The seeds of the majority of obligate parasitic Orobanchaceae that develop terminal haustoria are unique in their germination requirements. Unlike the seeds of the facultative parasites, they are usually very small, they are produced in large quantities, and their survival in soil is often very long. Some species develop apomictic seeds from unfertilised ovules. This chapter discusses the dispersal strategies of the obligate holo- and hemiparasites, which determine their reproductive potential.