alexa Genetic analysis of an interspecific cross in ornamental Viburnum (Viburnum).
Psychiatry

Psychiatry

Journal of Addiction Research & Therapy

Author(s): AlNiemi T, Weeden NF, McCown BH, Hoch WA

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Abstract A genetic analysis was performed on a population derived from crosses between Viburnum lantana and Viburnum carlesii. Linkage maps were developed for each species using AFLP, random amplified polymorphic DNA (RAPD), and sequence-tagged site markers and a half-sib approach that took advantage of both the polymorphism between the species and the heterozygosity within each parent. The map for V. lantana consisted of 153 DNA markers and spanned approximately 750 cM, whereas that for V. carlesii contained 133 markers and covered 700 cM. These maps were used to determine the location of several major genes influencing leaf spot resistance, Verticillium wilt resistance, bud color, and flower scent. Both species contained moderate levels of heterozygosity. Flow cytometric analysis revealed that the genome of V. lantana was 40\% larger than that of V. carlesii, and this difference was paralleled by a proportionally greater number of intercross markers (markers segregating 3:1) from V. lantana than from V. carlesii. In addition, V. lantana (n = 9) displayed a 10th linkage group for which no homolog in V. carlesii (n = 9) could be found and which contained only markers present in the former species and absent in the latter. These results suggest that Viburnum could be an interesting genetic model for Caprifoliaceae sensu lato. This article was published in J Hered and referenced in Journal of Addiction Research & Therapy

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