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PI 651794
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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 642749 | DR1 | Oryza sativa L. | Arkansas, United States | NSGC |  | | 2006 | DEVELOPED | | | | | | Breeding material | DR1 was induced in the tall Arkansas rice cultivar, 'Drew', in order to quickly obtain semidwarfism in adapted germplasm. This mutant, which at 97 cm is 22% shorter than its parent provides a breeding source of semidwarfism, nonallelic to the worldwide semidwarfing gene sd1, in tropical japonica germplasm adapted to the southern US and similar climactic areas. This mutant provides an alternative semidwarfing source should genetic vulnerability problems arise from widespread use of sd1. | 1700852 | PI 642749 |