Genetic variation and selection of introduced provenances of Siberian Pine (Pinus sibirica) in frigi

来源 :林业研究(英文版) | 被引量 : 0次 | 上传用户:sdfsfd454554
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Siberian Pine (Pinus sibirica) is an ecologically and eco-nomically important species in pristine forests throughout northern Rus-sia. Four provenances of P. sibirica were introduced from Mongolia and Russia to the Greater Xing’an Range (the Daxing’anling), northeast China in 1993. The aim of this research was to study genetic variation and selection of the introduced four Pinus sibirica provenances. Heights (H), basal diameters (BD), survival rates (SR) and crown lengths (CL) of different families were measured as primary outcomes in different growth years. Results of data analyses demonstrated high coefficients of phenotypic variation (PCV) and heritability (H2) for H, BD and CL at 18 years after introduction. PCV and H2 increased with age. Correlations ofgrowth traits between any two growth years were all significantly positive, but the correlation coefficient was smaller when the growth year interval was larger. Correlations between H and the original environment factors decreased gradually, indicating that with long-term subsistence in the new environment, the influence of the source environment declined. Colligation of multiple traits to estimate provenances showed that Novosibirsk, Tomsk, and Altai Mountains had higher survival rates and biomass, and proved more suitable for introduction and plantation in the Greater Xing’an Range in China.
其他文献
采用树脂转移模塑(RTM)工艺制备先进复合材料的关键是高性能树脂基体的选择.以N,N’-二氨基二苯甲烷双马来酰亚胺(BDM)、O,O′-二烯丙基双酚A(DBA)和双酚A型氰酸酯(CE)为树脂
分析不对称接地状态下调节串联电压和串联电感控制线路电流等于正常电流的可能性,并提出一种新型的故障电流控制器,它由并联变压器、串联变压器、可调电感和有载调节开关构成
树脂基复合材料在厚度方向上较低的导电及导热性能限制了其在防静电、电磁屏蔽等领域的应用.采用多壁碳纳米管(MWNTs)改性T700/环氧复合材料,研究了MWNTs对复合材料基本力学
文章分析了绿色建筑的起源和三大特征,对绿色建筑设计观进行了阐述,并对绿色建筑和绿色设计的前景进行了展望。 The paper analyzes the origin and three characteristics
Forest gaps, openings in the canopy caused by death of one or more trees, have a profound effect on forest regeneration and drive the forest growth cycle. It is
轰燃是火灾蔓延的危险信号,尤其是在地下建筑内更容易造成群死群伤事故和巨额财产损失.本文总结归纳了轰燃的主要危害,从理论上分析了火灾荷载密度和开口尺寸对其发生的影响
采用溶胶-凝胶法在不同基体表面制备了叠层式TiO2/SnO2复合纳米薄膜。用扫描电子显微镜(SEM)、X射线衍射(XRD)对复合薄膜表面形貌和晶体结构进行表征。采用紫外-可见吸收光谱
文章报道了塔里木河中游胡杨林土壤原生动物的种类组成、优势类群、相似性系数等,与中国典型地带土壤原生动物进行比较.结果共观察到原生动物5个纲7个目13个属17个种.
We studied relations between natural seedling reproduction and above ground environment in a longleaf pine ecosystem. Forty-eight 0.05 ha circular plots were sa
From March 2007 to March 2009 we quantified plant diversity at Chilapatta Reserve Forest in Terai Duars in the Indian eastern Himala-yas. We sampled stratified