THE SIGNIFICANCE OF FLORAL CHARACTERISTICS IN SEED PRODUCTION OF FOUR SUMMER RAPE CULTIVAR A-LINES WITH pol CYTOPLASM

pol CMS A-line plants of three summer rape cultivars with altered floral morphology showed greater degrees of sideworking by leaf cutter bees than their respective B-line plants with normal floral morphology. However, A-line seed yields were equal to or greater than those of the B-lines.Key words: Flower morphology, rape pol CMS, A-line seed set