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Science 23 February 2001:
Vol. 291. no. 5508, p. 1443
DOI: 10.1126/science.291.5508.1443o
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This Week in Science
In a study of the North American plant genus Lycium, Miller and Venable (Reports, 29 Sep. 2000, p. 2335) proposed that polyploidy may trigger gender dimorphism "by disrupting self-incompatibility and leading to inbreeding depression." Brunet and Liston argue that the analysis by Miller and Venable "does not support the claimed associations," suggest possible shortfalls in their method for measuring self-compatibility, and hold that showing the importance of the claimed associations in the evolution of gender dimorphism requires a demonstration "that gender dimorphism arises more frequently via this pathway than via other pathways." Miller and Venable cite additional phylogenetic work supporting their analysis and suggest some additional statistical tests for the notion of polyploidy as a trigger for gender dimorphism.The full text of these comments can be seen at www.sciencemag.org/cgi/content/full/291/5508/1441a
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Science. ISSN 0036-8075 (print), 1095-9203 (online)
