| Abstrakt: |
Chromosome rearrangements were isolated via crossing of F1 offspring from X-irradiated male and female Delia brassicae with intact insects. An enhanced (more than 30%) rate of late embryonic lethality (LEL) in clutches was the primary criterion of rearrangements. When males alone were irradiated at 2.5, 5, and 15 Gy, a total of 7.8, 9.6, and 23.6% of their offspring, respectively, inherited semisterility. After irradiation of females alone, the LEL rate in F1 was insignificant. Hybridization analysis of F2 revealed 18 lines with autosomal inheritance of semisterility. Fourteen lines (43.7%) exhibited an increased rate of LEL linked to the male sex. |
