Canola ( Brassics napus L.) is an oilseed plant with high productivity and superior fatty acid composition of the oil quality. In order to evaluate yield and morpho - physiological traits in canola, 100 lines (92 double haploids and 8 control cultivars) based on simple lattice design in 10 × 10 with 2 repeat in 1390- 91 at the Field of College of Agriculture , Isfahan University of Technology, located at Lavark Najaf abad were planted. traits included 1) days to flowering 2) days to pod formation 3) days to maturity 4) plant height 5) number of branches 6) number of pods per main branch 7) number of pods per plant 8) pod length 9) number of seed in pod 10) 1000 grain weight 11) biological yield 12) harvest index 13) seed yield 14) seed oil content. While the physiological traits included leaf area index, photosynthetic rate per unit leaf area, stomatal conductance, the trairation rate, the internal concentration of carbon dioxide, photosynthetic water use efficiency and mesophyll conductance were evaluated. Results of analysis of variance (ANOVA) of morphological data showed the significant differences (P 0.01) in DH lines. This result may remark a high genetic diversity among the lines and in turn shows high selection efficiency for yield. There was a significant correlation between yield and biological yield, harvest index, seed weight, pod length, pod, number of pods per plant, plant height and number of branches. Cluster analysis based on morphological data left; MARGIN: 0in 0in 0pt; VERTICAL-ALIGN: top" dir=rtl align=right Keywords : yield companent, DH, seed yield, photosynthetic, canola.
