scholarly journals Phylogeography and paleodistribution models of a widespread birch ( Betula platyphylla Suk.) across East Asia: Multiple refugia, multidirectional expansion, and heterogeneous genetic pattern

2019 ◽  
Vol 9 (13) ◽  
pp. 7792-7807
Author(s):  
Tian‐Yi Chen ◽  
An‐Ru Lou
Keyword(s):  
East Asia ◽  
Betula Platyphylla ◽  
Genetic Pattern ◽  
Betula Platyphylla Suk ◽  
Multiple Refugia

scholarly journals Linkage map construction and QTL analysis for Betula platyphylla Suk using RAPD, AFLP, ISSR and SSR

2012 ◽  
Vol 61 (1-6) ◽  
pp. 1-9 ◽  
Author(s):  
Kaixuan Zhang ◽  
Dan Wang ◽  
Chuanping Yang ◽  
Guanjun Liu ◽  
Guifeng Liu ◽  
...  
Keyword(s):  
Linkage Map ◽  
Average Distance ◽  
Interval Mapping ◽  
Betula Platyphylla ◽  
Stem Height ◽  
Trait Variation ◽  
Mapping Strategy ◽  
Map Construction ◽  
Betula Platyphylla Suk ◽  
Segregating Population

AbstractA linkage map for Betula platyphylla Suk was constructed based on RAPD, ISSR, AFLP and SSR markers by a pseudo-testcross mapping strategy. A F1segregating population including 80 progenies was obtained from the cross between two superior trees selected from Qinghai and Wangqing provenance, respectively. The paternal map was constructed with 282 markers consisting of 14 major and 15 minor (5 triplets and 10 doublets) linkage groups and spanning 1131 cM at an average distance of 4.0 cM between adjacent markers. The maternal map has 277 markers consisting of 15 major and 8 minor (5 triplets and 3 doublets) groups covering 1288 cM at an average distance of 4.6 cM between adjacent markers. In the same pedigree we investigated association of genetic markers with seedling stem height and circumference. The composite interval mapping was used to detect the number of quantitative trait loci and their position on the genetic linkage maps. Three QTLs (one on the male map and two on the female map) were found explaining 13.4%, 17.5% and 18.8% of the trait variation, respectively.

scholarly journals A model form for stem taper and volume estimates of Asian white birch (Betula platyphylla): a major commercial tree species of Northeast China

2019 ◽  
pp. 274-286 ◽  
Author(s):  
Muhammad Khurram Shahzad ◽  
Amna Hussain ◽  
Lichun Jiang
Keyword(s):  
Northeast China ◽  
Individual Species ◽  
Betula Platyphylla ◽  
White Birch ◽  
Box Plots ◽  
Stem Taper ◽  
Overall Evaluation ◽  
Betula Platyphylla Suk ◽  
Volume Estimates ◽  
Volume Equations

Stem taper functions are valuable tools for the study of stem profile and predict volume estimates. Such functions have long been analyzed for different birch species in the world. However, Asian white birch (Betula platyphylla Suk.) has not yet been investigated as an individual species in China or abroad. This study presents stem taper and volume equations for B. platyphylla in Northeast China. Eight commonly used taper functions were fit to the data of 615 destructively sampled trees from two regions of Northeast China. A second-order continuous autoregressive error structure was incorporated to address the autocorrelation in the data and to achieve the valid parameter estimation. The condition number was used to detect the multicollinearity in the models. The taper functions were compared in terms of overall evaluation statistics and by examining the box plots of diameter and volume residuals against relative heights and diameter classes. The equations of A. Kozak (2004, For. Chron. 80(4): 507–515; model 2), Z. Fang et al. (2000, For. Sci. 46(1): 1–12), and H. Bi (2000, For. Sci. 46(3): 397–409) were the leading models for diameter and volume estimates. Overall, the equation of Z. Fang et al. (2000, For. Sci. 46(1): 1–12) exhibited the best results for estimating diameter and total and merchantable volumes in terms of statistical performance and lower multicollinearity.

Cloning and functional characterization of a novel BpSEP4 gene from Betula platyphylla Suk.

2019 ◽  
Vol 16 (1) ◽  
Author(s):  
Xiaoqing Hu ◽  
Jing Tian ◽  
Qiqi Xin ◽  
Dou Li ◽  
Lianmei Yao ◽  
...  
Keyword(s):  
Functional Characterization ◽  
Betula Platyphylla ◽  
Betula Platyphylla Suk

Physical and Mechanical Properties of Five Heat-Treated Hardwood Species

2012 ◽  
Vol 472-475 ◽  
pp. 1132-1134
Author(s):  
Jin Sun ◽  
Xiao Bo Wang ◽  
Xiao Jing Wang ◽  
Yan Lin ◽  
Zhen Zhong Gao
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Dimensional Stability ◽  
Negative Impact ◽  
Physical And Mechanical Properties ◽  
Betula Platyphylla ◽  
Fraxinus Mandshurica ◽  
Hardwood Species ◽  
Heat Treated ◽  
Betula Platyphylla Suk

Five hardwood species (Schima superba Gardn, kapur( Dryobalanops sp.), ash (Fraxinus mandshurica Rupr.), birch(Betula platyphylla Suk.), tauari (Couratari sp.)) were conducted the Heat treatment at 185°C.. The results indicated that the dimensional stability, modulus of elasticity (MOE) increased greatly while the wettability decreased after treatment. There was a negative impact of heat treatment on MORs.

Significant Enhancement of Triterpenoids Production by Phomopsis Elicitors in Cell Suspension Cultures of Betula Platyphylla Suk.

2011 ◽  
Vol 335-336 ◽  
pp. 105-110 ◽  
Author(s):  
Qiao Li Zhai ◽  
Ya Guang Zhan ◽  
Dao Qi Xu ◽  
Xiao Dong Wang ◽  
Gui Zhi Fan
Keyword(s):  
Suspension Culture ◽  
Cell Suspension ◽  
Endophytic Fungi ◽  
Molecular Level ◽  
Mrna Level ◽  
Cell Suspension Cultures ◽  
Suspension Cultures ◽  
Betula Platyphylla ◽  
Fungal Elicitors ◽  
Betula Platyphylla Suk

58 fungal elicitors prepared from the endophytic fungi isolated from inner bark of B. platyphylla Suk. were examined to determine their effects on the growth and triterpenoid production in suspension cultures of Betula platyphylla Suk. cells. The results showed that different fungal elicitors could cause diversely stimulating effects. Among the fungal elicitors tested, BE58 stimulated the highest triterpenoids yield with 15.90 mg•L-1 and 183.72% higher than the control. The experiment also affirmed from mRNA level that triterpenoid was indeed accumulated in suspension culture of birch cells treated by BE58 fungal elicitor. Meantime BE58 was identified as Phomopsis from the morphological and molecular level.

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