Graft compatibility of Camellia oleifera Changlin 4 clone with five main rootstocks

摘要

Studies were conducted on graft compatibility of C. oleifera Changlin 4 superior clone scion and C. gigantocarpa, C. semiserrata, C. osmantha, and C. vietnamensis as rootstocks in the seedling stage by using Camellia oleifera as control root stock. It shows that the graft survival rate and preservation rate reached 92.67 and 96.79%, respectively when C. osmantha was used as the root stock grafting Changlin 4 clone. Compared C. oleifera as rootstock, there are no significant differences in sprout and growth of other grafted seedlings. In addition, graft compatibility is the best among four Camellia species. The graft survival and preservation rates of C. vietnamensis, the second best, they reached 93.33 and 96.80% respectively, but its leaf N, P content was significantly lower than the control after growing one year. C. semiserrata shows some incompatibility in the grafting process, of which graft survival rate is just 76.67% and growth is inhibited later. The graft preservation rate of C. gigantocarpa is only 11.81% after growing one year and stops growing afterwards, which shows strong incompatibility.