Genetic variation of height growth rhythm between clones of Larix kaempferi × L. gmelini based on logistic models

作   者：Chunming Li，Hui Xia，Hui Bai，Hongmei Wang，Yajuan Xing，Xiyang Zhao，Xiaomei Sun
期刊名称：Journal of Forest Research
影响因子：0.908
卷 期 号：
页     码：1-8
关键词：Larix kaempferi 9 L. gmelini Hybrid clones Logistic modeling Plant height variation
论文摘要：
Fifty-three larch interspecific hybrid clones
(Larix kaempferi 9 L. gmelini) and their parent clones
were used for growth curve analysis of height variations.
The growth curves of the 55 clones were ‘S’-shaped and 36
exhibited similar curves as the male parent. The coefficients
of the logistic models were higher than 0.943,
indicating that our results were effective in the simulation
of the growth curves. ANOVA analysis showed significant
differences in height of different clones (P0.01).
Average date of maximum height growth was Day 173, andaverage duration of rapid growth lasted for 50 days.
Annual average increase in height was 9.7 cm d-1 and
daily average increase was 0.2 cm. The ratio of GR to the
total annual increase in height ranged from 51.2 to 68.8%,
with the average being 59.8%. There was a positive correlation
between k values and plant heights which benefited
from the evaluation of early plant height. There was also a
positive correlation between GR (growth stage), GD (plant
height) and annual increase in height. These results are
informative to the evaluation of the elite clone selection
and provide a theoretical basis for breeding and
management.