Plant Inventory No. 202, Part I, - The Germplasm Resources ...

PI 565281 to 565286-continued
PI 565282 origin: United States, cultivar: C54/2. pedigree:
Reselected from C54. An improved population from
composite crosses involving 50% C46 and 50% C37, C31/4,
C91, C49 and C92. other id: YO54. other id: YO54 (iso).
remarks: Reselection from C54 for improved resistance to
beet yellows virus, Erwinia root rot, and powdery mildew,
Multigerm, self-sterile, moderately resistant to curly
top and bolting with adaptation to California. Broadly
based. Biennial. Breeding Material. Seed.
PI 565283 origin: United States, cultivar: C603. pedigree: S5
line from cross of curly top resistant line similar to
C17 to B883. other id: N203. other id: N103. remarks:
Homozygous beet cyst nematode (Heterodera schachtii)
resistant line. Multigerm. Self-fertile (Sf). Line
identified in S2 progeny test as homozygous resistant.
Biennial. Breeding Material. Seed.
PI 565284 origin: United States, cultivar: C603-1. pedigree:
Single plant increase from S3 of C603 that showed better
pollen fertility and plant vigor, other id: N203-1.
other id: N103-1. remarks: Homozygous beet cyst nematode
(Heterodera schachtii) resistant line. Biennial.
Breeding Material. Seed.
PI 565285 origin: United States, cultivar: C859. pedigree:
Recombined composite crosses and backcrosses of multigerm
source of rhizomania to monogerm, O-type, curly top
resistant germplasm similar to C566 and C563. other id:
2859 (iso). other id: 2859R (iso). other id: 2859m(Sp).
remarks: Variable, self-fertile (Sf) population that
segregates for resistance to rhizomania (Rz). Could be
used as a source to obtain combined resistance to curly
top virus and rhizomania in monogerm, O-type background.
Population segregates for monogermity, O-type, curly top
resistance, hypocotyl color, genetic male sterility, etc.
Biennial. Breeding Material. Seed.
PI 565286 origin: United States, cultivar: B883. pedigree: Sugar
beets homozygous for resistance to beet cyst nematode
(Heterodera schachtii), developed from monosomic
additions of Beta procumbens to B. vulgaris. other id:
N801A. remarks: Increased from B883. Homozygous cyst
nematode resistant line from I.R.S., Bergen op Zoom, The
Netherlands. Multigerm. Self-fertile (Sf). Not fully
pollen fertile. Very low vigor. Small canopy. Easy
bolting. Biennial. Breeding Material. Seed.
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