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Deng J.,International Center for Bamboo And Rattan | Li H.,International Center for Bamboo And Rattan | Wang G.,International Center for Bamboo And Rattan | Chen F.,International Center for Bamboo And Rattan | Zhang W.,Zhejiang Academy of Forestry
European Journal of Wood and Wood Products

This study employed the process of removing bamboo green and bamboo brooming from Neosinocalamus affinis in the production of laminated bamboo-bundle veneer lumber (BLVL) with a thickness of 28 mm. The effect of the removing extent of bamboo green on dimensional stability, modulus of rupture, modulus of elasticity and horizontal shearing strength of BLVL was discussed. The results show a rising trend for the lightness (L*) as well as red hue (a*) and yellow hue (b*) with increasing extent of removing bamboo green, The higher the extent of removing bamboo green, the less wax and SiO2 remained on the bamboo surface, the smaller the contact angle of bamboo-bundle and the better the dimensional stability of the corresponding BLVL. As the removing extent of bamboo green increased, BLVL exhibited a slightly decreasing value of modulus of rupture, modulus of elasticity and horizontal shear strength prior to the 28 h cycling treatment, while less strength reduction was observed after the treatment. The ones without removal of bamboo green suffered most severe strength reduction. In terms of horizontal shearing strength, A, B, C, D could meet the standard requirement of GB/T 20241-2006, while A, B and C, except for D, could reach the 9 V–12H level according to Bamboo Scrimber standard. © 2015, Springer-Verlag Berlin Heidelberg. Source

Li M.,Chinese Academy of Forestry | Yang H.,Zhejiang Academy of Forestry | Li F.,Chinese Academy of Forestry | Yang F.,Chinese Academy of Forestry | And 2 more authors.
Molecular Breeding

A male-specific SCAR marker (CsMale1) was developed in the dioecious rattan species Calamus simplicifolius. The marker was 509 bp in size and had a GC content of 50.1%. The sequence contained two open reading frames, indicating that CsMale1 represented probably a coding genome region. No highly similar sequence was found within the GenBank database. The SCAR marker could be used for precise and quick identification of plant sex types in C. simplicifolius, especially at very early developmental stages. © Springer Science+Business Media B.V. 2009. Source

Liu X.-H.,Zhejiang Academy of Forestry | Li Y.-G.,Zhejiang Academy of Forestry | Shen G.-C.,Zhejiang University | Weng D.-M.,Qingliangfeng National Nature Reserve Administration | And 2 more authors.
Forest Research

The population structure and spatial distribution patterns of Schima superba on 1 hm2 permanent sample plot located at Qingliangfeng Nature Reserve were analyzed by measuring, registering, tagging, identifying and mapping all the trees with DBH ≥ 1 cm in the 1 hm2 permanent sample plot. The result indicated the percentage of Schima superba with DBH ≤ 5 cm and DBH > 27.5 cm was 80.5%, 8.4%. With self-renewal ability, the population was stable. Based on analysis of population size class structure, the trend of population density of Schima superba changing with individual DBH was similar to skew normal distribution. Possibly attributed to the choice of plot, Schima superba, distribution of which took on obvious spatial heterogeneity, mostly gathered at slope and ridge. The analysis of population spatial association indicated there was negative correlation between individuals with DBH ≥ 16.1 cm and those with 1 cm ≤ DBH < 16.1 cm at scales ≤ 8 m, and no correlation at larger scales. Importance values of Schima superba in 25 little plots were 0-34.35%, and the average was 8.24%. The great difference among little plots was due to aggregation of spatial distribution of Schima superba. Source

Liu X.-H.,Chinese Academy of Forestry | Liu X.-H.,Zhejiang Academy of Forestry | Li Y.-G.,Zhejiang Academy of Forestry | Zhao X.,Zhejiang Academy of Forestry | And 2 more authors.
Forest Research

14 phenotypes from 9 populations were investigated and the phenotype diversities within and inter-populations were analyzed by adopting the methods of nested analysis of variance, coefficient of variation, correlation analysis and cluster analysis. The results are as follows; The phenotypes of Styrax tonkinensis present abundant variations within populations and groups; the phenotypic differentiation coefficient is 59.08% within populations, which is higher than that within groups; The average coefficient of variation of 4 kinds of phenotypes, collateral, leaves, fruits and seeds, are 31.02%, 16.85%, 8.2% and 6.6% respectively, it appears that seed stability is the highest, while the collateral stability is the lowest; Seed 1000-grain weight has very significant positive correlation with individual traits of collateral, leaves, fruits and seeds, while significantly negative correlation with shape index of leaves, fruits and seeds. Among the 14 phenotypes, only leaf length, leaf area and seed length, seed aspect ratio present one-way variation pattern of latitude and longitude; 9 natural groups of species Styrax tonkinensis could be divided into 3 classes through the clustering analysis of phenotypes. Source

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