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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 | | |
|---|
| 0 | PI 663944 | TifGP-2 | Arachis hypogaea L. subsp. hypogaea | Georgia, United States | S9 |  | | 2011 | DEVELOPED | | | | | | Breeding material | TifGP-2 is runner market-type in seed and pod size. It has a spreading runner growth habit with an erect mainstem that is prominent throughout the growing season, and at harvest. It is a medium maturity class peanut, with about 135 days needed for optimal maturity. TifGP-2 has a tan testa (seed coat) with percent meat comparable to other runner cultivars. TifGP-2 is most similar to the cultivar, Tifguard. Tifguard is resistant to the peanut root-knot nematode, and this resistance is the result of a single dominant gene contained within an introgression on chromosome 9A. This introgressed chromosome segment is large, spanning one-third to one-half of chromosome 9A, which may result in yield drag. These late generation sister line with (Tifguard) and without (TifGP-2) nematode resistance can be valuable research tools to obtain a better understanding of the interaction of nematodes with other pathogens of peanut. | 1890975 | PI 663944 |