Results of a Twenty-Two Year Old Progeny Test of a Pinus sylvestris Plantation in Eastern Nebraska

RURALS: Review of Undergraduate Research in Agricultural and Life Sciences

Awada, Tala¹  Rupe, Adam D² 

[1] University of Nebraska - LincolnUniversity of Nebraska - LincolnUniversity of Nebraska - Lincoln;School of Natural Resources, UNLSchool of Natural Resources, UNLSchool of Natural Resources, UNL

关键词: Pinus sylvestris;    progeny test;    windbreaks;    shelterbelts;    seed sources;    varieties;    selection;    geographic variation;    maternal effects;    paternal effects;   

DOI  :  

学科分类：农业科学（综合）

来源: University of Nebraska at Lincoln * Institute of Agriculture and Natural Resources

【 摘 要 】

The goal of this study was to examine the performance and adaptability of a 22-year-old Pinus sylvestris L. (Scots pine) full-sibling progeny plantation representing genetic material from seven European countries (Spain, France, Russia, Ex-Yugoslavia, Italy, Greece, and Germany), to the Great Plains environment. The study site was located at the University of Nebraska Agricultural Research and Development Center near Mead, NE. A total of 92 individuals originating from 23 crosses were studied for the following growth parameters: specific leaf area (SLA, cm2g-1), needle length (cm), canopy width (m), and tree height (m). Analysis of variance and orthogonal contrasts were used to compare crosses. Principal component analysis (PCA) was used to understand the factors controlling seed source classification. Taller trees, wider canopies and long needles characterized crosses that scored high in the PCA, while crosses that scored low had high SLA. Results indicated that crosses with maternal genetic materials originating from northern latitudes (i.e. Russia and Germany) performed better than the remaining crosses. Additionally, crossing northern seed sources with southern sources (i.e. Italy and Greece) improved growth. PCA analysis showed that height was the most valuable indicator variable, which is important because tree height is one of the easiest and fastest measurements that can be obtained in the field, allowing it to be used by producers and non-scientists in the future as an inexpensive and simple method of testing.

【 授权许可】

Unknown