Induced chromosome asymmetry and its effect on interchromosomal correlations for chiasma formation in rye, Secale cereale L.

摘要

The effect of induced chromosome asymmetry on the interchromosome correlations for chiasma formation was studied in interchange heterozygotes of rye. Correlations for chiasma formation between two groups of chromosomes were observed only in 2 out of18 plants studied. The estimates of between and within nuclear variances indicated negative correlation in these plants. The remaining 16 plants did not show interchromosome effect for chiasma formation.