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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 590999 | MSR | Medicago sativa L. subsp. sativa | Mississippi, United States | W6 | | | 1995 | DEVELOPED | PRE 07/10/1995 | | | | | Breeding material | First germplasm of alfalfa developed with a high level of resistance to Sclerotinia trifoliorum. Derived from Delta by two or three cycles of screening for resistance in excised leaf and stem tissues. In whole-plant inoculation experiments under controlled conditions, had significantly (P<0.01) greater survival than Delta, Vernal (the resistant standard), and 24 other alfalfa cultivars. Also had less disease severity than five cultivars in the field when disease pressure was strong. | 1493764 | PI 590999 |