ISSN:
1432-2242
Keywords:
Key words Chlorsulfuron
;
2-chloro-N-[[(4-methoxy-6-methyl-1
;
3
;
5-triazin-2-yl)amino]carbonyl]benzenesulfonamide
;
imazethapyr
;
2-[4
;
5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-ethyl-3-pyridinecarboxylic acid
;
Sugarbeet
;
Beta vulgaris L. ‘SR93’
;
‘L03’
;
REL-1
;
Acetolactate synthase
;
ALS
;
Acetohydroxyacid synthase
;
AHAS
;
Sur
;
Sir-13
;
93R30B
;
Sulfonylurea resistance
;
Somatic cell selection
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Sugarbeets are sensitive to imidazolinone herbicide residues applied to rotational crops. Two imidazolinone-resistance (IMI-R) sugarbeet traits were developed by somatic cell selection to overcome rotation restrictions for sugarbeets where imidazolinones have been applied. Sir-13 is an IMI-R/SU-S (sulfonylurea-sensitive) variant selected from an imidazolinone-sensitive (IMI-S) sugarbeet clone, REL-1. A second variant, 93R30B, resistant to imidazolinone as well as to sulfonylurea herbicides (IMI-R/SU-R), was selected from a plant homozygous for a previously described sulfonylurea-specific resistance trait, Sur (IMI-S/SU-R). The IMI-R alleles (Sir-13 and 93R30B) were found to be corresponding allelic variants at the same ALS locus and both were tightly associated with the Sur allele. Each resistant allele is dominant to the sensitive wild-type allele; however, incomplete dominance is shown among resistance alleles. Diploid sugarbeet contains a single ALS gene copy, limiting the ability to stack these resistance traits in the same plant by traditional breeding.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s001220050779
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