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Science 26 November 1999:
Vol. 286. no. 5445, pp. 1690 - 1691
DOI: 10.1126/science.286.5445.1690
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Perspectives

PLANT BIOLOGY:
No Stigma Attached to Male Rejection

Hugh Dickinson

Plants have evolved several elegant methods to prevent self-fertilization. For example, in many plant families the female stigma is able to immediately recognize and reject male pollen grains from the same plant. The molecular machinery of this self-pollen rejection system has now been described in commercially important Brassica species (Schopfer et al., Stone et al.). Dickinson discusses the new findings in a Perspective.

The author is in the Department of Plant Sciences, Rodney Porter Building, University of Oxford, South Parks Road, Oxford OX1 3RB, UK. E-mail: hugh.dickinson{at}plants.ox.ac.uk

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Science. ISSN 0036-8075 (print), 1095-9203 (online)