TGRC STOCK LISTS Roger T . Chetelat and Charles M . Rick Tomato Genetics Resource Center EMAIL: chetelat@vegmail . ucdavis . edu Department of Vegetable Crops EMAIL:   rick@vegmail . ucdavis . edu University of California FAX: (530) 752 - 9659 Davis, CA   95616, USA WEB: http://tgrc . ucdavis . edu Miscellaneous Stocks (1,192 accessions total) are listed in TGC 47 (1997) Wild Species Stocks (1,106 accessions total) are listed in TGC 48 (1998) REVISED LIST OF MONOGENIC STOCKS The following list of 978 monogenic stocks (at 607 loci) is a revision of the list issued in TGC 46 .   Certain obsolete or unavailable items have been deleted, newly acquired stocks have been added, and numerous inaccuracies corrected .   This year we are again indebted to John Maxon - Smith (Practical Plant Genetics) for many additional NILs in the Ailsa Craig background, as well as to Henri - Laterrot and C . Caranta (INRA) for stocks of ls and FORL - resistance, John Stommel (USDA - ARS) for stocks of B , and to Maarten Koornneef (Wageningen Agricultural University) for fri and tri mutants . For each monogenic stock, the following information is provided: GENE = gene symbol, ALLELE = allele symbol (provisional alleles are indicated by prov #, and first or unnamed alleles are indicated by -- ), NAME = gene name, CLASS = phenotypic class (see table at end of stock list; *=primary class), SOURCE = source of mutation ( SPON = spontaneous, CHEM = chemically induced, RAD = radiation - induced), BACK = background genotype (see table at end of stock list), ISO = isogenicity of gene in the given stock ( IL = isogenic line, NIL = nearly isogenic line, NON = nonisogenic), and ACC# = accession number . This stock list includes only accessions we consider to be “primary sources” for individual genes or alleles .   For each mutation, we have attempted to list the original source,   in which it is usually isogenic in a known background, as well as any nearly isogenic stocks into which it has been bred .   Most stocks are homozygous and true - breeding .   The exceptions are male - steriles (available as BC or F 2 populations), other inherited sterilities, homozygous - inviable dominants, and other mutants that are too difficult to maintain as homozygotes, hence are propagated via heterozygotes (usually as F 2 's) .    Detailed information on each monogenic stock, including phenotypic descriptions, references, images, map locations, colleague addresses, etc . , can be obtained through the TGRC website at http://tgrc . ucdavis . edu , or through the SolGenes database at http://genome . cit . cornell . edu/solgenes/welcome . html . Members are urged to submit stocks of verified monogenic mutants not listed here to the TGRC . GENE ALLELE NAME SYNONYM CLASS SOURCE BACK ISO ACC# 6Pgdh - 2 1 6 - Phosphogluconate dehydrogenase - 2 V* SPON pen NON LA2991 6Pgdh - 3 1 6 - Phosphogluconate dehydrogenase - 3 V* SPON pen NON LA2434 a -- anthocyaninless a1 A* SPON X NON LA0291 a -- anthocyaninless a1 A* SPON AC NIL LA3263 <