Maize Pollen Test Systems to Detect Nondisjunction

Abstract

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Adjacent II segregation products in B–A translocations of maize

“…cells indicates whether nondisjunction has occurred and which meiotic division was involved (Burnham 1950;Weber 1981). Since, in maize, the NOR is located on the short arm of chromosome 6, Burnham (1950) and Weber (1981) have used this approach to analyze the frequency of nondisjunctive behavior involving chromosome 6. This method also permits an analysis of the frequency of adjacent I1 segregation in TB-6L hyperploids and heterozygotes, since both the 6 and 6-B chromosomes would be cytologically marked by NORs.…”