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The extent of genetic variation that occurs among isolates of the social amoeba Dictyostelium rosarium obtained from a number of widely separated geographical localities around the world was investigated. Population diversity of D. rosarium was analyzed using sequences from the rDNA internal transcribed spacer (ITS1 and ITS2) and the 5.8S gene of 24 different isolates. Sequence analysis revealed little...
Imidazolinone-herbicide-resistant Clearfield™ (CL) rice allows the selective chemical control of red rice (Oryza sativa L.), a major weed problem in rice-growing areas of the southern US, using herbicides that otherwise are toxic to the crop. However, selection imposed by the herbicide of resistant individuals resulting from gene flow, and of naturally tolerant individuals, is a major concern. Experiments...
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