Chromosome Length in Relation to Transmission Frequency of Maize Trisomes.

RISOMIC inheritance was first reported in maize by MCCLINTOCK (1929) T in a study of segregating progenies derived from a spontaneous triploid (RANDOLPH and MCCLINTOCK 1926). Later MCCLINTOCK and HILL (1931) identified the primary trisome of chromosome IO, the shortest member of the maize chromosome complement which carries the r-g linkage group, and certain general observations on the known primary trisomic types of maize were made by RHOADES and MCCLINTOCK (1935). The present study was undertaken to compare the breeding behavior of the eight available primary trisomic types in maize.