Genetic variation and gene flow among Prunus cerasoides D. Don populations in northern Thailand: analysis of a rehabilitated site and adjacent intact forest

详细信息    查看全文

• 作者：Greuk Pakkad ; Suad Al Mazrooei ; David Blakesley ; Celia James ; Stephen Elliott ; Tapio Luoma-Aho and Jarkko Koskela
• 关键词：Forest restoration ; Tropical trees ; Genetic diversity ; Microsatellites ; Paternity analysis
• 刊名：New Forests
• 出版年：2008
• 出版时间：January, 2008
• 年：2008
• 卷：35
• 期：1
• 页码：33-43
• 全文大小：221.9 KB

文摘

This study describes the level of genetic variation and gene flow within and among populations of Prunus cerasoides in rehabilitated sites and adjacent intact forest. The seven microsatellite loci employed detected a total of 75 alleles (n = 401). Polymorphic information content (PIC) varied from 0.34 to 0.83. Between the adult populations there was moderate genetic differentiation with an F _ST value of 0.0575, which suggests that the restoration plots had a similar genetic composition to that of the natural population. The gene flow assessment provides some interesting insights into the genetic diversity of P. cerasoides. In the 16 naturally occurring trees over 83 % of the genotyped seed were fathered by unidentified trees whereas in restoration plot A only about 32 % of the pollen came from an unidentified father. This proportion was even less in Plot C where 25 % of the pollen parents were unidentified. The naturally occurring trees within Doi Suthep were surrounded by planted trees, which were contributing to the paternity of the seed crop. This result demonstrates that R16;R16;fill inR17;R17; planting should consist of locally sourced material if it is considered important to conserve the genetic integrity of the local populations.