Breeding of apetalous and dwarfish line APL 03 ( Brassica napus )

APL03 (Brassica napus L.), an apetalous and dwarfish rapeseed line was developed from a cross of a petalous canola line ZH004 and an apetalous line APL01. Results from observation showed that 100% of plants performed apetalous in APL03 population, and over 90% of flowers gave apetalous on each of individual plants. APL03 showed 130-140cm in plant height, set 400 pods per plant and gave a seed oil content of 43%-47%. APL03 was also characterized with lodging resistance and stem rot disease tolerance. It can be used as parental line in a breeding program to develop a variety with a particular agronomic traits required for mechanization management of rapeseed production.