Allelism testing of miscellaneous stocks in the 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. Over the years, some of these mutants have been found in other COOP stocks and some have been sent in by cooperators. 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 our 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.

 

POSITIVE TESTS:

previous designation allelism test with al1 new designation MGCSC: stock number
lw*-1998-2 positive(+/lw*) × (+/al1) al1-1998-2 203C

previous designation allelism test with y1-gbl1 new designation MGCSC: stock number
g*-N2236 positive: (+/g*) × (+/y1-gbl1) y1-gbl1-N2236 602H
pg*-N547B positive; (+/pg*) × y1-gbl1; (+/pg*) × (+/y1-gbl1) y1-gbl1-N547B 602I

previous designation allelism test with wlu2 new designation MGCSC: stock number
wl*-N629A positive; (+/wlu2) × (+/wl*) wlu2-N629A 727BB

 

NEGATIVE TESTS:

previous designation allelism test with zn2 allelism test with zb1 allelism test with zb3 allelism test with zb4 allelism test with zb7
zn*-PI228181 negative: (+/zn*) × zn2; zn2 × (+/zn*) negative: zn* × zb1 negative: zn* × zb3    
zn*-78-695   negative: (+/zn*) × zb1 negative: (+/zn*) × zb3 negative: (+/zn*) × zb4 negative: (+/zn*) × zb7

previous designation allelism test with ws3 allelism test with yg2 allelism test with g1 allelism test with g2
ws*-N537D negative: (+/ws*) × ws3; (+/ws3) × (+/ws*) negative: (+/ws*) × yg2; (+/yg2) × (+/ws*)    
v*-N2260 negative: v* × ws3 negative: (+/yg2) × v*; v* × yg2 negative: negative: