Evaluation of Growth Traits of Six Acacia melanoxylon Clones in Yulin,Guangxi
In order to provide theoretical basis for selection and promotion of Acacia melanoxylon clones,taking six one-year-old to four-year-old A.melanoxylon clones(SR3,SR13,SR14,SR17,SR25 and SR53)as re-search objects,survival rates and preservation rates of different A.melanoxylon clones were compared.Tree heights,DBHs and individual volumes were measured.Repeatability forces and genetic gains were analyzed.Differences in growth traits of different A.melanoxylon clones were analyzed by membership function method.Results showed that survival rates and preservation rates of different A.melanoxylon clones had no significant differences.At the forth year,tree heights,DBHs and individual volumes of A.melanoxylon clones had signifi-cant differences,repeatability forces were relatively high,and average tree height,average DBH and individual volume of SR3 clone were larger,coefficients of variation of which were larger.Membership function analysis showed that SR3 clone had the highest overall score,followed by SR53,SR14 and SR17 clones,and SR25 and SR13 clones had lower scores.SR3 clone could be promoted in Yulin,Guangxi.
国家科技期刊平台
NSTL
万方数据
维普
