DOI: 10.1016/j.foreco.2014.06.046
Scopus记录号: 2-s2.0-84906270011
论文题名: Shade tolerance plays an important role in biomass production of different poplar genotypes in a high-density plantation
作者: Wang N. ; Huang Q. ; Sun J. ; Yan S. ; Ding C. ; Mei X. ; Li D. ; Zeng X. ; Su X. ; Shen Y.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 331 起始页码: 40
结束页码: 49
语种: 英语
英文关键词: Biomass production
; Leaf area index
; Photosynthesis
; Populous
; Shade tolerance
Scopus关键词: Forestry
; Least squares approximations
; Photosynthesis
; Principal component analysis
; Biomass productions
; Leaf Area Index
; Partial least-squares method
; Photosynthetic parameters
; Photosynthetic rate
; Populous
; Shade tolerance
; Three-dimensional laser scanners
; Biomass
; Photosynthesis
; biomass
; genotype
; leaf area index
; life history trait
; light effect
; photosynthesis
; population density
; principal component analysis
; shade tolerance
; shading
; biological production
; canopy architecture
; deciduous tree
; plant breeding
; plantation forestry
; respiration
英文摘要: Poplar (Populus sp.) canopy provides considerable shading in high-density plantations, imposing adverse impacts on crown characteristics relating to biomass production, such as leaf area index (LAI) and photosynthesis. However, it is yet unclear how the LAI, photosynthesis, and biomass production of poplars would respond to shading. In this study, the shading responses were investigated in three poplar genotypes with contrasting biomass performance in a high-density plantation (1667ha-1) established six years prior to the study. A three dimensional laser scanner and a portable photosynthesis system were used to measure the canopy structure and photosynthetic parameters. Principal component analysis (PCA) and the partial least squares method (PLS) were used to determine the importance of measured variables to LAI and biomass. Among all the factors studied, LAI was one of the most related factors to biomass. The genotype with greater shade tolerance ability had higher LAI. Moreover, the high biomass genotype showed a low light compensation point (LCP) and respiration rate (Rd) accompanied with a high ratio of photosynthesis to respiration (Amax/Rd) and a high maximum photosynthetic rate (Amax). This characteristic was more distinct in the middle (M) and lower (L) crown layers than in the upper (U) crown layer. Therefore, high LAI, Amax and Amax/Rd accompanied by low LSP and Rd are the key traits in obtain a high biomass genotype. Thus, improving shade tolerance in leaves of the middle and lower canopy layer to obtain a high LAI and biomass production can be an effective breeding method. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65732
Appears in Collections: 影响、适应和脆弱性
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作者单位: College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; National Engineering Laboratory for Tree Breeding, Beijing Forestry University, Beijing 100083, China; State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
Recommended Citation:
Wang N.,Huang Q.,Sun J.,et al. Shade tolerance plays an important role in biomass production of different poplar genotypes in a high-density plantation[J]. Forest Ecology and Management,2014-01-01,331