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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 608781 | BSAAo2(S)C1 | Zea mays L. subsp. mays | Iowa, United States | NC7 |  | | 1992 | DEVELOPED | | | | | | Breeding material | BSAAo2(S)C1 is a yellow dent improved opaque-2 version of the broadly based Iowa Iowa Synthetic AA [BSAA (PI 550448; Crop Sci. 11:140-141)]. A homozygous stock for the opaque-2 gene was crossed to the normal BSAA population. The normal by opaque-2 cross was allowed to intermate and plants from opaque-2 kernels were backcrossed to the normal BSAA population. Three backcrosses each followed by one generation of intermating were made to the normal BSAA population. After the last intermating, S1 recurrent selection was initiated to improve the population for yield and other agronomic traits. One cycle of S1 recurrent selection was practiced with 200 S1 lines. The superior 10% for grain yield, percentage protein, and percentage lysine were recombined to form the Cl. The resulting selected population was random mated for one additional generation and constitutes the germplasm available for general distribution. BSAAo2(S)C1 is a genetically broad based population of AES800 maturity that should be a useful breeding population for programs that include breeding for improved protein quality. | 1082058 | PI 608781 |