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Genotypic Diversity of Kikuyugrass (Pennisetum clandestinum) Populations in California

Published online by Cambridge University Press:  12 June 2017

Cheryl A. Wilen
Affiliation:
Dep. Bot. and Plant Sci., Univ. Calif., Riverside, CA 92521
Jodie S. Holt
Affiliation:
Dep. Bot. and Plant Sci., Univ. Calif., Riverside, CA 92521
Norman C. Ellstrand
Affiliation:
Dep. Bot. and Plant Sci., Univ. Calif., Riverside, CA 92521
Ruth G. Shaw
Affiliation:
Dep. Bot. and Plant Sci., Univ. Calif., Riverside, CA 92521

Abstract

Using starch gel electrophoresis, we examined the genetic variability of kikuyugrass collected from three golf course sites within its geographical range in California. These experiments were conducted to determine the method of spread of kikuyugrass in areas where it is considered invasive. Samples from roughs and fairways of each of these locations were compared. of the 354 plants examined, 12 different genotypes were identified by isozyme analysis, and only three of the nine putative loci varied among the genotypes. Two genotypes, representing 73% of the plants examined, were found at all three geographic locations. Our results imply that under common golf course practices, kikuyugrass is maintained by clonal reproduction. We conclude that low genetic variation does not preclude a plant species from being an aggressive invader.

Type
Weed Biology and Ecology
Copyright
Copyright © 1995 by the Weed Science Society of America 

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