We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
杉木高世代杂交子代生长与木材性状遗传分析.
- Authors
牛慧敏; 张振; 邱勇斌; 沈汉; 徐金良; 何贵平
- Abstract
We used a 4×5 two-factor crossover design of fir advanced generation hybrid progeny in a forest farm in Kaihua County, Zhejiang Province, to study the growth traits, basic wood density, and trunk carbon content of 8 years old fir to estimate the general combining ability and special combining ability (GCA/SCA)effect values and relative importance of each trait, analyze the genetic control mode and correlation between traits, reveal the genetic effects of growth and timber traits in fir advanced generation hybrid progeny, and select high-performing hybrid combinations. We estimated the GCA/SCA effect values and relative importance of each trait and analyzed the genetic control mode and correlation between the traits. The results showed that the differences in height, diameter at breast height, volume of wood per plant, basic density of wood, and carbon content of the trunk of cedar trees were significant (P<0. 05) among the hybrid combinations, while the differences in carbon content were not significant among the combinations. Parent-parent fitness analysis showed that the maternal effects of tree height, diameter at breast height, volume of wood per plant, and trunk carbon content were greater than the paternal effects, with C25-3 having the greatest maternal effect and B109-3 having the greatest paternal effect. The hybrid combinations were mainly controlled by the effects of additive genes for each trait, and focusing on the selection of the parents for breeding tall fir tree generations is vital. Correlation analysis between traits showed that trunk carbon content and growth traits were significantly positively correlated. and two fast-growing and high carbon sequestration hybrid combinations (3211 and 3215)were jointly selected based on the 10%selection rate. The volume of wood per plant increased by>30. 91%compared with that of control check (CK), and the carbon content of the trunk increased by>26. 95%compared with that of CK, whereas the basic density of wood was weakly correlated or negatively correlated with the growth traits. Two hybrid combinations with high-performing wood traits (3218 and 3216) were selected, and the basic density of wood increased by>2. 17%compared with that of CK.
- Publication
Journal of Forest & Environment, 2024, Vol 44, Issue 2, p120
- ISSN
2096-0018
- Publication type
Article
- DOI
10.13324/j.cnki.jfcf.2024.02.002