Relationships between stand productivity and height growth for clonal lines and open-pollinated progenies of sugi (Cryptomeria japonica D. Don) plus trees selected from Kansai Forest Tree Breeding Region [Japan]
2002
"Yamada, H. (National Forest Tree Breeding Center, Juo, Ibaraki (Japan)) | Miyaura, T. "
"Relationships between stand productivity and height growth for clonal lines and open-pollinated progenies of sugi (Cryptomeria japonica D. Don) plus trees selected from Kansai Forest Tree Breeding Region were examined. The analysis was carried out using the tree-height at stand age of 15-year-old for 304 cutting clones and 175 open-pollinated progenies tested in more than five of 254 clonal test sites and 133 progeny test sites. The stand productivity for each test site was evaluated as the overall mean tree-height at stand age of 15-year-old in each progeny test plantation. The liner regression coefficients of height growth for clonal lines and open-pollinated progenies on the stand productivity were estimated. Approximately 90% of those regression coefficients were not significantly different from one at the 5% level. These results suggest that the remarkable GE interaction is not present within each breeding district comprising Kansai Forest Tree Breeding Region, and that the existing breeding district is adequate to the clonal lines and open-pollinated progenies of sugi plus trees."
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