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United States Department of Agriculture

Agricultural Research Service

Title: New Maize Chromosome Additions to Oat

Authors
item Riera-Lizarazu, Oscar - UNIVERSITY OF MINNESOTA
item Rines, Howard
item Phillips, Ronald - UNIVERSITY OF MINNESOTA

Submitted to: Agronomy Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: November 2, 1995
Publication Date: N/A

Technical Abstract: We have produced oat-maize partial hybrids by pollinating oat (Avena sativa L.; 2n=42) flowers with maize (Zea mays L.; 2n=20). Maize RFLP markers were used to identify the maize chromosomes present in these plants. Oat- maize partial hybrids with maize chromosomes 2, 3, 4, 5, 6, 7, 8, and 9 present as additions to a complete complement of oat chromosomes were identified. No hybrids with maize chromosomes 1 and 10 were observed. Self-fertility observed in oat haploids due to a meiotic restitution process was also observed in some partial oat-maize hybrids with one or two maize chromosomes. Self-pollination of partial hybrids resulted in the production of eleven fertile oat-maize addition lines containing individually maize chromosomes 2, 3, 4, 7, 8, and 9 plus one line with both maize chromosomes 4 and 7. These novel cytogenetic stocks represent useful materials for gene/marker mapping, gene expression, and gene transfer studies.

Last Modified: 12/21/2014
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