摘要
29个优树及其种子园无性系自由授粉家系的实生苗造林试验11年结果表明:①两类家系生长量呈紧密正相关,树高胸径均达到显著水平;②生长量的年度相关,造林后第3～4年与第11年就达到极显著水平;③本试验估算的广义家系平均遗传力树高为86.67％,胸径80.01％;④家系间差异极大,并且多数家系优于对照,即家系间选择潜力大。
Five Chinese fir plantations were established by the use of seedlings raised from seeds which were collected from plus trees and seed orchard respectively. The numbers of open pollination family from plus tree and clonal seed orchard were 29 each, and control was one. The 11 years' results showed: (1) The increment of two kinds families had a closely positive correlation, and both tree height and DBH reached significant level. (2) The annual correlation of increment reached great significant level after the third and seventh year of tree planting respectively. (3) Families mean broad sense heritability for tree height was 86.67 per cent, for DBH 80.01 per cent. (4) The difference among families was significant, and most of families were better than control, which showed that there was a great potentiality for selection among families.
出处
《浙江林学院学报》
CSCD
1990年第2期172-174,共3页
Journal of Zhejiang Forestry College
关键词
杉木
优树
种子园
半同胞子代
Chinese fir (Cunninghamia lanceolata Hook)
plus tree
seed orchard
half-sib progeny
family
