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| ACCESSION | PLANT NAME | TAXONOMY | ORIGIN | GENEBANK | IMAGE | AVAILABILITY | RECEIVED | SOURCE TYPE | SOURCE DATE | COLLECTION SITE | COORDINATES | ELEVATION | HABITAT | IMPROVEMENT LEVEL | NARRATIVE | | |
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| 0 | PI 642055 | DT97-4290 | Glycine max (L.) Merr. | Mississippi, United States | SOY |  | | 2006 | DEVELOPED | 02/01/2006 | | | | | Breeding material | DT97-4290 has an indeterminate growth habit, purple flowers, tawny pubescence, and tan pod walls. Seed are shiny yellow with black hila. DT97-4290 is classified as Maturity Group IV (relative maturity 4.8), and matures about 2 d earlier than `Manokin?. In three years of USDA Uniform tests, plant height of DT97-4290 averaged 91 cm compared to 75 cm for that of Manokin. The plant lodging score of 2.0 (where 1 all plants upright and 5 all plants prostrate) and seed quality score of 2.2 (where 1 excellent and 5 poor) of DT97-4290 were similar to those of Manokin. Seed weight of DT97-4290 averaged 144 mg/seed compared to 122 mg/seed for Manokin. Seed of DT97-4290 averaged 415 g/kg protein (zero moisture basis) and 197 g/kg oil (zero moisture basis), which is 11 g/kg more protein and 9 g/kg less oil than that of Manokin. DT97-4290 is moderately resistant to charcoal rot based on field evaluations from 2002 to 2004 in artificially infested sandy loam soil at Stoneville, MS. The severity of internal discoloration for stem and root was measured on a scale of 1-5 (where 1 = resistant, >1 to 2 = moderately resistant, >2 to <3 = moderately susceptible, and 3 to 5 = susceptible). The severity value for DT97-4290 over the three year study averaged 1.6, whereas susceptible check Manokin averaged 3.6. DT97-4290 is the first soybean germplasm line to be released specifically for its resistance to charcoal rot. It is a valuable source of resistance for soybean breeders and producers in areas experiencing yield losses due to charcoal rot. DT97-4290 is resistant to southern stem canker (similar to resistant check cultivar Manokin), soybean mosaic virus, and races 2, 4, and 10 of phytophthora rot [caused by Phytophthora sojae (M.J.Kaufmann and J.W. Gerdemann)]. DT97-4290 is also moderately resistant to frogeye leaf spot [caused by Cersospora sojina Hara]. | 1694792 | PI 642055 |