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Genetic Comparison Between Natural And Planted Populations Of Pinus Brutia And Cupressus Sempervirens In Syria, Batoul N. Al-Hawija, Viktoria Wagner, Isabell Hensen Jan 2014

Genetic Comparison Between Natural And Planted Populations Of Pinus Brutia And Cupressus Sempervirens In Syria, Batoul N. Al-Hawija, Viktoria Wagner, Isabell Hensen

Turkish Journal of Agriculture and Forestry

There is wide consensus that ongoing deforestation contributes to global warming and poses a threat to species diversity. Less understood is whether the practice of creating plantations might also erode genetic diversity and undermine the genetic structure of tree populations. We tested these hypotheses in natural and planted populations of Pinus brutia Ten. subsp. brutia and Cupressus sempervirens L. var. horizontalis (Mill.), 2 important forestry species in the Mediterranean region. We used plant material from 3 different bioclimatic regions in Syria. Using RAPD markers, we evaluated the genetic diversity and structure of 12 populations of P. brutia (6 natural, 6 …


Influence Of Soil Chemical Properties On Relative Abundance Of Arbuscular Mycorrhiza In Forested Soils In Malaysia, Kian Huat Ong, John Keen Chubo, Jie Hung King, Chia Shing Lee, Dennis Shan An Su, Philip Sipen Jan 2012

Influence Of Soil Chemical Properties On Relative Abundance Of Arbuscular Mycorrhiza In Forested Soils In Malaysia, Kian Huat Ong, John Keen Chubo, Jie Hung King, Chia Shing Lee, Dennis Shan An Su, Philip Sipen

Turkish Journal of Agriculture and Forestry

The effect of soil chemical properties on the diversity and colonization of arbuscular mycorrhiza (AM) varies among ecosystems. This study was conducted to assess and compare the abundance of AM in a rehabilitated forest and a logged-over forest soil using the most probable number and spore number methods. Glomus (71.7%-82.1%) and Acaulospora (17.4%-19.5%) were found to be abundant in both sites, while Gigaspora was found only in the logged-over forest. The abundance of AM in the rehabilitated forest based on the spore count was significantly higher than in the logged-over forest by a 6-fold difference. Furthermore, root colonization in the …