Pollen Migration in Predominantly Self-Fertilizing Plants: Barley
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TL;DR
Evidence is presented that outcrosses can occur at distances up to 60 m and the implications of this longer-distance pollen migration on the maintenance of the genetic integrity of pedigreed stocks and experimental populations are discussed.
Abstract
In barley, a heavily self-fertilizing species (approximately 99%), most outcrosses occur between plants that grow closely adjacent to each other. Outcrosses have been detected only rarely between plants that are separated by a meter or more. In this article we present evidence that outcrosses can occur at distances up to 60 m and we discuss the implications of this longer-distance pollen migration on the maintenance of the genetic integrity of pedigreed stocks and experimental populations.