Submitted to: Crop Science
Publication Type: Germplasm Release
Publication Acceptance Date: 4/19/2005
Publication Date: 10/27/2005
Citation: Hanna, W., Wilson, J.P., Timper, P. 2005. Registration of pearl millet parental line A1/B1 Tift 99D2. Crop Science 45:2671.
Interpretive Summary: not required
Technical Abstract: The USDA-ARS and the University of Georgia at Tifton, GA, cooperatively developed and released in December 2003 pearl millet (Pennisetum glaucum) parental line Tift 99D2 A1-line (cytoplasmic-nuclear male sterile; cms) and B1-line (maintainer). Tift 99D2A1 is used as a parent to produce TifGrain 102. Tift 99D2B1, male fertile maintainer line for Tift 99D2A1, was derived from a dwarf rust (Puccinia substriata var. indica) resistant plant, registered as Tift 89D2, selected in 1993 from a Rust Resistant Bulk Seed Population derived from rust resistance research conducted from 1978 to 1984 at Tifton, GA. The rust resistant selection was crossed with inbred 1164B in 1996. Four backcrosses were made to 1164B with selection for rust resistance in the field or greenhouse at each backcross. A rust resistant plant with desirable agronomic characteristics was selected in BC4 and selfed for two generations to develop a uniform inbred, Tift 99D2B1. Tift 99D2B1 was backcrossed to 90D2A1E1 (cms line used to produce pearl millet grain hybrid HGM-100) for seven generations to produce cms Tift 99D2A1. Seeds are brownish-grey. Plants are at 50% anthesis in 54 to 56 d after planting and are 0.6 to 0.8 m in height at maturity.