| 0 | PI 651015 | FC220 | Beta vulgaris L. subsp. vulgaris | Colorado, United States | W6 | | | 2007 | DEVELOPED | PRE 09/10/2007 | | | | | Breeding material | FC220 sugarbeet germplasm is multigerm (M) in a fertile cytoplasm, segregating for genetic male sterility (a1a1), self-compatibility (Sf) and hypocotyl color (R). It has good resistance to root-rotting strains (AG-2-2) of Rhizoctonia solani K hn and is segregating for the Rz1 gene, which confers resistance to some strains of Beet necrotic yellow vein virus (BNYVV), the causal agent of rhizomania. This germplasms has moderate resistance to Aphanomyces cochlioides Drechsl., which causes aphanomyces root rot (aphanomyces black root). FCC220 does not show resistance to Beet curly top virus (BCTV), but shows resistance to the sugarbeet root aphid (Pemphigus sp.). It has moderate susceptibility to cercospora leaf spot, caused by Cercospora beticola Sacc. This germplasm has good field performance for percentage sucrose. It is a population from which to select disease-resistant, multigerm pollinator parents. | 1737676 | PI 651015 |
| 1 | PI 651016 | FC221 | Beta vulgaris L. subsp. vulgaris | Colorado, United States | W6 | | | 2007 | DEVELOPED | PRE 09/10/2007 | | | | | Breeding material | FC221 sugarbeet germplasm is multigerm (M) in a fertile cytoplasm, segregating for genetic-male-sterility (a1a1), self-compatibility (Sf) and hypocotyl color (R). It has good resistance to root-rotting strains (AG-2-2) of Rhizoctonia solani K hn and is segregating for the Rz1 gene, which confers resistance to some strains of Beet necrotic yellow vein virus (BNYVV), the causal agent of rhizomania. This germplasms has moderate resistance to Aphanomyces cochlioides Drechsl., which causes aphanomyces root rot (aphanomyces black root). FCC221 shows moderate resistance to Beet curly top virus (BCTV), but does not show resistance to the sugarbeet root aphid (Pemphigus sp.). It has moderate susceptibility to cercospora leaf spot, caused by Cercospora beticola Sacc. This germplasm has good field performance for sugar yield. It is a population from which to select disease-resistant, multigerm pollinator parents. | 1737677 | PI 651016 |
| 2 | PI 634210 | FC301 | Beta vulgaris L. subsp. vulgaris | Colorado, United States | W6 | | Not Available | 2003 | DEVELOPED | PRE 12/02/2003 | | | | | Breeding material | O-type germplasm segregating for hypocotyl color (94% red) and monogerm (90%). Two crosses made. C890aa x two pollen donors-FC607 and FC604 (approx. 50 F1 plants) bulked with the cross C859aa x the same 2 pollen donors (approx. 50 F1 plants). F1 seed combined for bulk increase of F2 after germination testing to make parental contribution equal from both female parents. 90 F2 mother roots harvested and selfed. 75 selfed families produced and selected for resistance to cercospora leaf spot (Fort Collins, CO), and Beet curly top virus (Kimberly, ID). Best performing families in both nurseries increased and seed sent to Salinas, where sel. made for rhizomania resist., resist. to Erwinia root rot, powdery mildew, agronomic performance, and % sucrose. Sel. roots inter-pollinated, and monogerm and multigerm seed separated forming two pop. 99-1,2,3, M and 99-1,2,3, m. Seed from monogerm populations either sent to Oregon for steckling prod. or planted in the Salinas rhizomania nursery. Stecklings from male-fertile, high quality monogerm plants sele. and individually selfed to produce S1 progeny, and crossed to an annual male-sterile tester. F1 hybrids indexed for O-type in 12/02 and found uniformly male-sterile, suggesting O-type sel. unnecessary. Seed of population and S1 progenies planted in Oregon steckling nursery and Salinas rhizomania nursery. From Salinas rhizomania nursery, S1 plants from within S1 progenies and plants from pop. selected for resistance to rhizomania. Concurrently, seed from original Fort Collins pop., which sel. strictly for leaf spot resistance and re-selected from leaf spot resistance using leaf disc method, planted also in Salinas rhizomania nursery and Oregon steckling nursery. In 3/01, induced, sel. plants from Salinas and stecklings from Oregon polled and recombined through male-sterile plants from all three phases. Nearly equal representation from new Fort Collins cercospora leaf spot population, the S1 lines and pop. sel. for rhizomania resist. | 1650010 | PI 634210 |
| 3 | PI 634018 | FC201 | Beta vulgaris L. subsp. vulgaris | Colorado, United States | W6 | | Not Available | 2003 | DEVELOPED | PRE 11/13/2003 | | | | | Breeding material | Segregating populaton of sugarbeet with a high frequency of the Rz allele conferring resistance to Rhizomania (beet necrotic yellow vein virus). Segregates for resistance to root-rotting strains (AG-2-2) of Rhizoctonia solani and to the sugar beet root aphid (Pemphigus sp.), has moderate resistance to cercospora leaf spot (Cercospora beticola), to black root (Aphanomyces cochlioides), and the Beet curly top virus. Heterogeneous population from which to select disease resistant monogerm, O-type parents to infuse multiple disease resistance on the female side of hybrids. No CMS equivalent. O-type germplasm with 94% red hypocotyl (68 plants counted) color (R) and 90% monogerm seed (mm). | 1649717 | PI 634018 |