Abstract:
:The most important rhizomania-resistance gene in sugar beet is the Rz1 gene from the Holly Sugar Company in California, the source widely used to breed partially resistant varieties. Other important gene sources are WB41 and WB42, which both originate from Beta vulgaris subsp. maritima collected in Denmark, and which have been reported to be similar. The major resistance gene in WB42 is known as Rz2. We studied the resistance in WB41 and used markers to map the major resistance gene in this source, which we call Rz3. It was identified on chromosome III. This is the chromosome that Rz1 and Rz2 have been mapped to. Data from greenhouse tests and ELISA showed that Rz3 had incomplete penetrance, with heterozygotes varying widely in resistance levels. The involvement of additional minor genes in the strong resistance of the original WB41 source cannot be excluded.
journal_name
Genomejournal_title
Genomeauthors
Gidner S,Lennefors BL,Nilsson NO,Bensefelt J,Johansson E,Gyllenspetz U,Kraft Tdoi
10.1139/g04-108subject
Has Abstractpub_date
2005-04-01 00:00:00pages
279-85issue
2eissn
0831-2796issn
1480-3321pii
g04-108journal_volume
48pub_type
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