Levels of Outcrossing and Contamination in Two Pinus sylvestris L. Seed Orchards in Northern Sweden

被引：50
|
作者：
El-Kassaby, Yousry A. [1 ,2 ,3 ]
Rudin, Dag [1 ]
Yazdani, Reza [1 ]
机构：
[1] Swedish Univ Agr Sci, Dept Forest Genet & Plant Physiol, S-90183 Umea, Sweden
[2] Canadian Pacific Forest Prod Ltd, Tahsis Pacific Reg, Saanich Forestry Ctr, Saanichton, BC VOS 1MO, Canada
[3] Univ British Columbia, Fac Forestry, Vancouver, BC V6T 1W5, Canada
来源：
SCANDINAVIAN JOURNAL OF FOREST RESEARCH | 1989年 / 4卷 / 1-4期
关键词：
Pinus sylvestris; seed orchards; outcrossing; contamination; allozyme;
D O I：
10.1080/02827588909382544
中图分类号：
S7 [林业];
学科分类号：
0829 ; 0907 ;
摘要：
The joint levels of outcrossing and contamination in two young northern Swedish Scots pine (Pinus sylvestris L.) seed orchards were studied with the aid of allozyme markers. High levels of contamination (21-36%) were estimated and were attributed to the observed low within orchard pollen production. Outcrossing rate estimates were high (0.957-0.961), though they departed significantly from complete outcrossing (t=1.0) in spite of the observed high contamination levels. These results confirmed reported relationships between outcrossing and contamination levels in open-pollinated seed orchards. It was concluded that a crop management option relying on supplemental mass-pollination would be effective in reducing both contamination and inbreeding levels.
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页码：41 / 49
页数：9
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