Reeves, A. F. Location of af and sd on chromosome 5. Two   of   the   mutants   previously   assigned   to chromosome  5  have  been  located  at  or  near position 14 on the chromosome map. The F2 data presented here show no recombination between sun dwarf (sd) and the anthocyaninless mutant af. Both show linkage with mc at  13  or  14  cM  in  two-point  tests.  In  a  four-point  test,  af showed linkage  of  equal  intensity  with  mc and tf, although the presence of another anthocyanin mutant in the mc-tf-wt stock makes interpretation of the data difficult. The data of Rick et al. (TGC 20:52- 54) showing a distance of 26 units between af and tf support the location of af between mc and tf and expand the map by 9 units.   Over the past few years we have accumulated more mutants that have proved to be allelic to standard loci. All of this series were induced by EMS   seed   treatment.   Since  they  are  presumably isogenic with their respective parent lines, they might be useful for various kinds of studies on the genetics and physiology of  such single  gene effects.  Seeds are available to interested workers for all mutants except the hl allele 3-95. I prefer not to attach new symbols to these because they are exact mimics of the specified alleles. Any of them should be symbolized if in the future it were to be used  extensively  and/or  phenotypic  differences  were  to  be  discovered.  The  parental  lines  are designated  in  the  following  list  by  these  symbols:  MM  (Moneymaker),  VF  36  (LA490),  VFNTCh (LA1221, a short-internoded, multiply-resistant cherry line bred by Dr. P. G. Smith). Rick, C. M. More new mutants at old loci. One  point  of  interest  in  this  work  is  that  all  except  one  (3-620)  of  the  complete anthocyanin  deficiencies  has  proved  to  be  allelic  to  one  of  the  11  previously  reported  loci.  This experience suggests that nearly all of the loci for this phenotype have been discovered.  

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