The RFLP patterns of SF265, Banksii, and theirhybrid, SFB5, suggested that Banksii was mostlyFig. la, b. RFLP patterns for probes hybridized to DNAs fromSF265 (S), Banksii (B), SFB5 (F1) and segregating F 2 progeny ofthe cross SF265 x Banksii (F2). a Probe pMaCIR214 showingone single fragment per homozygous profile (e.g., lanes 1 and 2)using EcoRV-digested DNA. b Probe pMaCIR1108 showingtwo fragments per homozygous profile (e.g., lanes 1, 5, 6), usingDraI-digested DNA. This probe revealed SF265 heterozygosity(lane 2). Bands 1 and 3 (respectively 2 and 4) always cosegregatedhomozygous, but that SF265 was heterozygous atmany loci polymorphic between both accessions(Fig. lb). SF265 and Banksii shared a common bandfor most probes for which SF265 was heterozygous.Consequently, about half of the loci revealed by suchprobes did not segregate in the F 2 population, and thusonly 21~o of all probes could be used to construct alinkage map from the cross SF265 x Banksii.Owing to the complexity of some of the patterns, andthe partial heterozygosity of SF265, only 20 primerscould be effectively used for mapping.
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