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Crop Science 43:1137 (2003)
© 2003 Crop Science Society of America

REGISTRATIONS OF GERMPLASM

Registration of TN93-99 Soybean Germplasm

V.R. Pantalone*, F.L. Allen and D. Landau-Ellis

Dep. of Plant Sciences, 2431 Center Dr., University of Tennessee, Knoxville, TN 37996-4561

* Corresponding author (vpantalo{at}utk.edu)

TN93-99 (Reg. no. GP-280, PI 631122) soybean [Glycine max (L.) Merr.] was developed by the Tennessee Agricultural Experiment Station and was released in 2001. It was released as a germplasm because of its high yield throughout broad geographical regions of the southern USA. TN93-99 is an F4–derived line from the cross, [(TN85-55 x ‘TN 5-85’)] x ‘Hutcheson’ (Allen and Manuel, 1986; Buss et al., 1988). TN85-55 is a selection from the cross TN77-46 x ‘Fayette’ (Bernard et al., 1988). TN77-46 is a selection from the cross'Forrest' x ‘Mitchell’ (Hartwig, 1973; USDA-ARS GRIN). The biparental F1 from TN85-55 x TN 5-85 was grown at Knoxville, TN, in 1987 and crossed with Hutcheson pollen. The three-way F1 was grown at Knoxville, TN, in 1988. The F2 seed were sent to Belize in the winter of 1988-1989, where progeny were inbred without selection, via modified single seed descent (i.e., advancing a single multiseeded pod rather than a single seed per plant) for two generations (Brim, 1966). The F4 population was grown at Knoxville, TN, in 1989 and individual F4 plants were selected visually for harvest. Progeny rows were advanced as bulks in 1990, 1991, and 1992. In 1993, F4:8 lines were yield tested at two Tennessee locations, and TN93-99 was selected for superior agronomic performance.

TN93-99 was evaluated for yield performance in Tennessee from 1993 through 2000 where its mean yield of 3030 kg ha-1, averaged over 66 Tennessee environments was not significantly different (P < 0.05) than that of Hutcheson (3124 kg ha-1). In the Tennessee State Variety Test, averaged over a total of 11 environments in 2 yr (1999–2000), TN93-99 produced a seed yield of 2486 kg ha-1, which was similar to the test average (2540 kg ha-1, Graves et al., 2001).

TN93-99 was entered in the USDA Uniform Soybean Tests, Southern States, Preliminary Group V Test in 1996 and Uniform Group V Test in 1997, 1998, and 2000. In the USDA tests, TN93-99 produced 3192 kg ha-1 seed yield, with 208 g kg-1 seed oil, 416 g kg-1 seed protein, and 13.3 g 100 seeds-1, compared with ‘Hutcheson’ which produced 2990 kg ha-1 seed yield, 208 g kg-1 seed oil, 410 g kg-1 seed protein, and 13.5 g 100 seeds-1. TN93-99 matured 0.5 d later than Hutcheson and was 1.3 cm taller at harvest. Lodging resistance in TN93-99 was similar to that of Hutcheson. TN93-99 has white flowers, gray pubescence, tan podwall, and a determinate growth habit. Seed are yellow with buff hila (Paris et al., 2001).

TN93-99 is resistant to stem canker [caused by Diaporthe phaseolorum (Cooke & Ellis) Sacc. var. caulivora K.L. Athow & R.M. Caldwell], and resistant to Soybean mosaic virus. TN93-99 is susceptible to soybean cyst nematode (Heterodera glycines Ichinohe), susceptible to southern root-knot nematode [Meloidogyne incognitaa (Kofoid and White) Chitwood], susceptible to peanut root-knot nematode [Meloidogyne arenaria (Neal) Chitwood], and susceptible to sudden death syndrome [caused by Fusarium solani (Mart.) Sacc.]

The Tennessee Agricultural Experiment Station will maintain Breeder seed. Small samples (200 seed) of TN93-99 can be obtained from the corresponding author for at least 5 yr.

NOTES

Registration by CSSA.

Accepted for publication October 31, 2002.

REFERENCES




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D.R. Panthee and V.R. Pantalone
Registration of Soybean Germplasm Lines TN03-350 and TN04-5321 with Improved Protein Concentration and Quality
Crop Sci., September 8, 2006; 46(5): 2328 - 2329.
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