title: Different CMS sources found in Beta vulgaris ssp maritima: mitochondrial variability in wild populations revealed by a rapid screening procedure.
abstract: Mitochondrial DNA (mtDNA) variation in natural Beta maritima populations has been characterized by way of Southern blot hybridizations of total DNA using non-radioactive probes and chemiluminescent detection. It was found that the previously described N ("normal") mitochondrial type could be subdivided into three subtypes. A new mitochondrial genotype (type R) was distinguished in addition to the previously described type S. Both are male-sterile cytoplasms and can produce a. segregation of sexual phenotypes in their progenies depending on the nuclear background. The populations contained at least two to four different mitochondrial genotypes.
authors.affiliation: Laboratory of Genetics and Evolution of Plant Populations, URA CNRS 1185, Scientific and Technical University of Lille, F-59655, Villeneuve d'Ascq CEDEX, France.
authors.forename: P
authors.initials: P
authors.lastname: Saumitou-Laprade
authors.forename: G J
authors.initials: GJ
authors.lastname: Rouwendal
authors.forename: J
authors.initials: J
authors.lastname: Cuguen
authors.forename: F A
authors.initials: FA
authors.lastname: Krens
authors.forename: G
authors.initials: G
authors.lastname: Michaelis