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C-Banding and Localization of 18S-5.8S-26S rDNA in Tall Oatgrass Species

Brigham Young Univ., Dep. of Agronomy and Horticulture, 275 WIDB, Provo, UT 84602

View larger version (29K): [in a new window]   Fig. 1. C-banding karyotypes of (a) Arrhenatherum parlatorei GRA 633/93, (b) A. thorei GRA 579/94, (c) A. album PI 254870 (Iraq) and (d) A. elatius PI 251946 (Austria).

View larger version (74K): [in a new window]   Fig. 2. In situ hybridization of wheat NOR rDNA probe pTa71 to somatic prometaphase or metaphase chromosomes of (a) Arrhenatherum album PI 283189, (b) A. thorei GRA 579/94 and (c) A. elatius PI 251946. The probe was direct-labeled with Alexafluor 488-5-dUTP and cells were counterstained with propidium iodide. Hybridization sites are indicated with arrows.