Abstract:
In 2024,the growth characters of 32 10-year-old
Keteleeria fortunei family progenies from Yongchun Biqing State-owned Forestry Farm were investigated and analyzed in this paper.The results showed that there were significant differences among families in tree DHB,height and individual volume.The average DBH was 9.07 cm,the coefficients of variation(
CV)of traits were 8.59%~41.16%.The average tree height was 5.96 m,the coefficients of variation(
CV)of traits were 6.37%~33.86%.The average individual volume was 0.0261 m
3,the coefficients of variation(
CV)of traits were 28.16% ~ 110.49%.By cluster analysis,32
Keteleeria fortunei families were divided into 4 types:"excellent type","good type","average type" and "poor type".Among them,the average DBH,tree height and volume of "excellent type"
Keteleeria fortunei families were 14.59 cm,8.78 m and 0.0843 m
3,respectively,which were 60.86%,47.32% and 222.99% higher than the overall average,and 75.57%,57.35% and 346.03% higher than the control group(Putian No.1).The heritability of DBH,tree height and volume were 0.721,0.792 and 0.833,respectively.There were 6 families with an average genetic gain of more than 15%,including 7,9,13,19,31 and 32.The analysis results suggested that these 6 excellent families could be applied and promoted as improved strains of
Keteleeria fortunei.