Clonal Selection of Metasequoia glyptostroboides
- Received Date: 1991-09-24
- Available Online: 2012-12-04
Abstract: 31 clones of Metasequoia glyptostroboides have been tested at two sites in Huanggang Region, Hubei Province for 12 years. The main trial consists of three randomized complete block with row plot. The results of variance analysis at the age of 12 year-old showed that there are significant differences in growth traits and crown shape among clones and the clones of inherent rapid growth could be characterized at early stage in field by planting grafts. Correlated responses to selection suggested that the fourth or fifth year would be the appropriate time to select according to the height growth. The tree breeders have embraced testing and selection at early ages in clonal breeding.