Abstract:

In the current studies, winter gourd seeds were treated with space flight. Dry seeds of inbreeding lines B98 was carried by recovered satellite. The biological effects and the variation frequency of SP1 generation were compared to its originality under the same planting conditions. The results indicated that there was significant difference for content of solids and other traits between treatment by space flight and its origins. The variation frequency in SP1 generation of space flight treatment was 11.77 %. It showed that space flight can promote winter gourd mutagenesis mutation, there were mutants with gourd shape and color in skin. P5 is a new winter gourd hybrid developed by crossing lines‘B32’בBH1’, which was bred from CHA44-6.