Analysis of the Correlations Among the Activities of Phosphoenolpyruvate Carboxylase and Phenylalanine Ammonia-lyase in Developing Seeds with Seed Oil Contents in Different Canola Lines

10 canola lines with different seed oil percentages were used to evaluate dynamics of phosphoenolpyruvate carboxylase(PEPc)and phenylalanine ammonia-lyase(PAL)activities in developing seeds and seed oil content,and to analyze the correlations among the activities of PEPc and PAL in deve-loping seeds with seed oil content.Results are as follows:In seed developing process,no significant positive correlations of seed PEPc activities with oil content was found,indicating that seed PEPc activity didn’t play important role in the lipids accumulation and seed PEPc was not the key enzyme in the lipids accumulation;no significant negative correlations of seed PAL activities with seed oil content was found,the correlations of seed PAL activities with oil content was the highest at 32 days after pollination but not significant at 0.05 level.