| 0 | PI 665053 | 'FC1028' | Beta vulgaris L. subsp. vulgaris | Colorado, United States | W6 | | | 2012 | DEVELOPED | PRE 05/07/2012 | | | | | Breeding material | FC20021028 was derived from the cross of 9933 x FC709-2. Population 9933, developed by USDA-ARS at Salinas, segregates for the Rz1 gene, which confers resistance to rhizomania (caused by Beet necrotic yellow vein virus), but does not carry the Rz2 gene, which confers some tolerance to strains of BNYVV that have overcome the Rz1 gene (RB-BNYVV) It also carries a moderate resistance to BCTV, and virus yellows. FC709-2 (PI 599668) is a multigerm, non-O-type, pseudo-self fertile germplasm with excellent resistance to rhizoctonia root-rot and moderate resistance to CLS and sugar beet root aphid (Pemphigus betae Doane). Approximately 400 plants of FC20021028 were established at 20 cm spacing under rhizomania conditions at Salinas. Seven month old plants were selected based on resistance to rhizomania, root size and root conformation. . Field selected beets were analyzed for percent sucrose sugar and reselected. Seed was produced in spring 2004 in bulk from 37 mother roots (~9%) that would have segregated fertile and genetic male sterile (aa). This population became FC1028. FC1028 is a multigerm sugarbeet population in fertile cytoplasm, segregating for self-sterility, multigermity, hypocotyl color and the Rz1 gene. FC1028 showed tolerance to Cercospora beticola Sacc., moderate tolerance Aphanomyces cochlioides Drechsl., and Beet severe curly top virus. This is a population from which to select disease-resistant, multigerm pollinator parents. Because of a percent monogerm seedballs and O-type parentage, it should be possible to select monogerm, O-type, CMS maintainer lines from this line. | 1901540 | PI 665053 |
| 1 | PI 665054 | 'FC1036' | Beta vulgaris L. subsp. vulgaris | Colorado, United States | W6 | | | 2012 | DEVELOPED | PRE 05/07/2012 | | | | | Breeding material | FC1036 is an intercross of FC1028, FC1037, and FC1038. FC21028 was derived from the cross of 9933 x FC709-2. Population 9933, (USDA-ARS Salinas), segregates for the Rz1 gene, which confers resistance to rhizomania (caused by Beet necrotic yellow vein virus), carries a moderate resistance to BCTV, and virus yellows. FC709-2 (PI 599668) has excellent resistance to rhizoctonia root-rot and moderate resistance to cercospora leaf spot (CLS) and sugar beet root aphid. Plants of this cross were established under rhizomania conditions at Salinas and selected based on resistance to rhizomania, root size and root conformation. . Field selected beets were analyzed for percent sucrose sugar and reselected. FC1037 and FC1038 derived from a polycross of CLS resistant lines from ARS Fort Collins, East Lansing and Salinas. These lines were EL50, EL52, SR96, 99J25-023, 98J02x05, 99J02-00, 99J31-00, and 99J19-00 from EL and FC607, FC708, FC715, FC709-2 from FC. Seed from this polycross was crossed to CR010 and CR011 from ARS Salinas to produce FC1038 and FC1037, respectively. CR010 and CR011?s source of CLS resistance is from Rovigo, Italy, crossed with Salinas germplasm 9911. CR011is a broad based composite of germplasm and backcrosses resistant to CLS and rhizomania and CR010 is a narrowly base germplasm derived from a few S1 and half-sib selections. Then 51, 65, and 66 stecklings of FC1028, FC1037, FC1038, respectively, were mixed and planted together. Seed harvested from male sterile plants (58 plants) was bulked as 05-FC1036. Seed was planted in a field with rhizomania. Natural infections of powdery mildew and Sclerotium rolfsii occurred. Plants were inoculated with CLS and Erwinia carotovora. They were mass selected for resistance and root size, shape, and conformation and analyzed for sugar concentration to produce 07-FC1036. FC1036 showed tolerance to CLS, rhizomania, rhizoctonia and aphanomyces root rot. Disease-resistant, multigerm pollinator parents may be selected. | 1901541 | PI 665054 |
| 2 | PI 665055 | 'FC1037' | Beta vulgaris L. subsp. vulgaris | Colorado, United States | W6 | | | 2012 | DEVELOPED | PRE 05/07/2012 | | | | | Breeding material | FC20021037 derived from a polycross of cercospora leaf spot (CLS) resistant lines from ARS Fort Collins (FC) and East Lansing (EL) and Salinas. `EL50? (PI 598073), `EL52? (PI 628274), `SR96? (PI 628272), 99J25-023, 98J02x05, 99J02-00, 99J31-00, and 99J19-00 from EL combine CLS resistance with smooth root, rhizoctonia root rot resistance and aphanomyces resistance. `FC607? (PI 590837) `FC708? (PI 590845), `FC715? (PI 574625), and `FC709-2? (PI 599668) from FC combine CLS resistance with O-type, rhizoctonia root rot resistance, beet curly top virus resistance and sugarbeet root aphid resistance. Seed from this polycross was crossed to CR011 from ARS Salinas (SAL). CR011?s source of CLS resistance is from Rovigo, Italy (Istituto Sperimentale per le Colture Industriali), which was crossed with male sterile (aa) Salinas germplasm 9911 and it is a broad based composite of germplasm and backcrosses resistant to CLS and rhizomania. Approximately 400 plants of FC20021037 were established at 20 cm spacing under rhizomania conditions at Salinas. Seven month old plants were selected based on resistance to rhizomania, root size and root conformation. . Field selected beets were analyzed for percent sucrose sugar and reselected. Seed was produced in spring 2004 in bulk from 46 mother roots (~12%) that would have segregated fertile and genetic male sterile (aa). This population became FC1037. FC1037 is a multigerm sugarbeet population in fertile cytoplasm, segregating for self-sterility, multigermity, hypocotyl color and the Rz1 gene. FC1037 showed tolerance to Cercospora beticola Sacc., moderate tolerance to rhizoctonia root rot and Beet severe curly top virus and moderate susceptibility to Aphanomyces cochlioides Drechsl. This is a population from which to select disease-resistant, multigerm pollinator parents. Because of a percent monogerm seedballs and O-type parentage, it should be possible to select monogerm, O-type, CMS maintainer lines from this line. | 1901542 | PI 665055 |
| 3 | PI 665056 | 'FC1038' | Beta vulgaris L. subsp. vulgaris | Colorado, United States | W6 | | Not Available | 2012 | DEVELOPED | PRE 2012 | | | | | Breeding material | FC20021038 derived from a polycross of cercospora leaf spot (CLS) resistant lines from ARS Fort Collins (FC) and East Lansing (EL) and Salinas. `EL50? (PI 598073), `EL52? (PI 628274), `SR96? (PI 628272), 99J25-023, 98J02x05, 99J02-00, 99J31-00, and 99J19-00 from EL combine CLS resistance with smooth root, rhizoctonia root rot resistance and aphanomyces resistance. `FC607? (PI 590837) `FC708? (PI 590845), `FC715? (PI 574625), and `FC709-2? (PI 599668) from FC combine CLS resistance with O-type, rhizoctonia root rot resistance, beet curly top virus resistance and sugarbeet root aphid resistance. Seed from this polycross was crossed to CR010 from ARS Salinas (SAL). CR010?s source of CLS resistance is from Rovigo, Italy (Istituto Sperimentale per le Colture Industriali), which was crossed with male sterile (aa) Salinas germplasm 9911 and it is a narrowly base germplasm derived from a few S1 and half-sib selections, and segregates for high sucrose and resistance to CLS and rhizomania. Approximately 400 plants of FC20021038 were established at 20 cm spacing under rhizomania conditions at Salinas. Seven month old plants were selected based on resistance to rhizomania, root size and root conformation. . Field selected beets were analyzed for percent sucrose sugar and reselected. Seed was produced in spring 2004 in bulk from 45 mother roots (~11%) that would have segregated fertile and genetic male sterile (aa). This population became FC1038. FC1038 is a multigerm sugarbeet population in fertile cytoplasm, segregating for self-sterility, multigermity, hypocotyl color and the Rz1 gene. FC1038 showed tolerance to Cercospora beticola Sacc., and Beet severe curly top virus and moderate tolerance Aphanomyces cochlioides Drechsl. This is a population from which to select disease-resistant, multigerm pollinator parents. Because of a percent monogerm seedballs and O-type parentage, it should be possible to select monogerm, O-type, CMS maintainer lines from this line. | 1901543 | PI 665056 |