II.7 Translocations and genetic analysis of other mutants.
G. Fischbeck and H. Hauser. Institute of Agronomy and Plant breeding, Weihenstephan, West Germany.
From a collection of reciprocal translocations isolated after x-ray treatment of seeds of the spring barley varieties Donaria and Proctor in 31 lines the chromosomes affected by translocations are determined as follows using a tester set received from A. Hagberg.
In addition to further work on isolation and identification of translocations, we also intend to locate the breaking points of some of the lines mentioned above using the intercross method (Kasha and Burnham 1965) and genetic markers (Persson 1969).
Linkage data have also been collected for other x-ray mutants obtained from Proctor and Donaria. For example the Bonus-all-arm-tester-set (Hagberg and Hagberg 1968) has been crossed with 5 mutants for different types of leaf-flecking which may be useful as genetic markers. Some recessive Proctor mutants which show morphologic similarity with certain genetic markers are being tested for allelic condition (lax a on chromosome 7; log 1 on chromosome 2 and trd on chromosome 5).
