URBANA, ILLINOIS
Maize Genetics Cooperation � Stock Center Allelism testing of miscellaneous stocks in Maize COOP phenotype only collection --Jackson, JD This report summarizes allele testing of miscellaneous stocks characterized by phenotype only, in the Maize Genetics COOP Stock Center collection. Some of these mutants have been found in other COOP stocks and some have been sent in by cooperators over the years. In most cases crosses were made between known heterozygotes and homozygous plants. Plants were scored at the seedling stage and again at maturity. Proposed new designations have been assigned to these alleles. The stocks with positive tests have been increased and placed on the 2001 stocklist. It is expected that with further sorting and allelism testing of mutations characterized by phenotype only, additional alleles of characterized mutants will be discovered and placed in the main collection.
 
previous designation allelism test with ws3 allelism test with g1 allelism test with g2 new designation
v*-N2260 negative: (+/v*) x ws3; v* x ws3 negative negative --
previous designation allelism test with zn2 allelism test with zb1 allelism test with zb4 new designation
zn*-4-6(4461) positive: zn2 x zb* ---- ---- zn2-4-6(4461)
zb*-94-234  positive: (+/zb*) x zn2; zn2 x zb* negative negative zn2-94-234: MGCSC stock number: U140I
note: zn2-94-234 from ub1 stock
 
previous designation allelism test with ra1 allelism test with ra2 new designation MGCSC: stock number
ra*-PI184279 positive: (+/ra*) x ra1 negative ra1-PI184279 708AB
ra*-PI239103 positive: (+/ra*) x ra1 negative ra1-PI239103 708AC
ra*-PI267181** positive: (+/ra*) x ra1 negative ra1-PI267181 708AD
ra*-PI267184 positive: (+/ra*) x ra1 negative ra1-PI267184 708AE
ra*-63-3359 positive: (+/ra*) x ra1 negative ra1-63-3359 708AF
ra*-D negative: (+/ra*) x ra1 positive: (+/ra*) x ra2 ra2-D 308G
ra*-412 negative: (+/ra*) x ra1 negative: (+/ra*) x ra2 -- --
note: tassels of all new ra1 alleles have good ramosa phenotype. Ears of ra1-PI alleles have extreme ramosa phenotype.
**: gs1-PI267181 may segregate in this stock.
 
previous designation allelism test with gs1 new designation MGCSC: stock number
gs*-PI267181 positive: (gs1 x gs*) gs1-PI2671811** 109C
note: ra1-PI267181 may segregate in this stock.
 
previous designation allelism test with ij1 new designation MGCSC: stock number
str*-60-2454-20 positive: (+/ij1) x str* ij1-60-2454-20 711C

 
Please Note: Notes submitted to the Maize Genetics Cooperation Newsletter may be cited only with consent of the authors.

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