Abstract: In this study,2 cytoplasmic male sterile maintainers(pure line varieties from different origins) were used as maternal and 1 restorer was used as paternal to produce 2 hybrids by hand pollination.Two F₂ segregating population and F_2:3 families populations were obtained from the hybrids.Heterosis were analyzed on quality traits in F₁,F₂ and F_2:3 populations.It indicated that glucosinolates and protein content had negative or lower positive heterosis.There were also negative or lower positive heterosis in F₂ and F_2:3.The segregating situation analyzed by distribution and frequency graph in F₂ and F_2:3.It indicated that they had very wide variation,their content concentrated near their mid parents.The distributions of protein content and accorded with Normal School.They are all quantitative characters.On the other hand,the above better parents heterosis occurred in segregating populations F₂ and F_2:3 families populations.They will enrich our breeding materials.It will benefit for rapeseed breeding on excellent quality of high protein and low glucosinolates.

Key words: Brassica napus L1, Heterosis, Erucic acid, Glucosinolates content, Protein content

CLC Number: 

• S634.3