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Title: REGISTRATION OF ANNUAL O-TYPE AND CMS SUGARBEET GERMPLASM LINES, FC404 AND FC404CMS.

Author
item Panella, Leonard
item HECKER, RICHARD - USDA-ARS (RETIRED)

Submitted to: Crop Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 11/1/1995
Publication Date: N/A
Citation: N/A

Interpretive Summary: These germplasms were released to provide a monogerm, annual, O-type maintainer and CMS equivalent pair. FC404 is the O-type maintainer for FC404CMS. It is a monogerm, easy bolting annual, with green hypocotyledons and is self-fertile. FC404 was developed from the cross SLC 03 x FC606, followed by four cycles of mass selection for monogerm, annual plants. FC404 has not been assessed for disease reactions, but the original pollinator (FC606) was moderately resistant to Cercospora leaf spot and curly top virus. FC404CMS is the CMS equivalent of FC404. These germplasms may be useful to expedite generation advancement of specific hybridizations in genetic studies, for other research purposes, and for O-type testing.

Technical Abstract: These germplasms were released to provide a monogerm, annual, O-type maintainer and cytoplasmic-genetic male sterile (CMS) equivalent pair. They may be useful to expedite generation advancement of specific hybridizations, in genetic studies, for other research purposes, and for O-type testing. FC404 is the O-type maintainer for FC404CMS. It is a monogerm (mm), easy bolting annual (B-), with green hypocotyledons (rr) an is self-fertile (Sf = 0.97). FC404 was developed from the cross SLC 03 (rr) x FC606 (R-), followed by four cycles of mass selection for monogerm, annual plants. FC404 has not been assessed for disease reactions, but the original pollinator (FC606) was moderately resistant to Cercospora leaf spot (caused by Cercospora betcola Sacc.) and curly top virus. FC404CMS is the CMS BC5 equivalent of FC404.