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Arbuscular Mycorrhizae Effects on Growth of Two Hawaiian Species:Indigenous Osteomeles anthyllidifolia (Rosaceae) and Invasive Psidium cattleianum (Myrtaceae).

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Title: Arbuscular Mycorrhizae Effects on Growth of Two Hawaiian Species:Indigenous Osteomeles anthyllidifolia (Rosaceae) and Invasive Psidium cattleianum (Myrtaceae).
Authors: Koske, R.E.
Gemma, J.N.
LC Subject Headings: Natural history--Periodicals.
Science--Periodicals
Natural history--Pacific Area--Periodicals.
Issue Date: Oct 2006
Publisher: Honolulu, University of Hawaii Press
Citation: Koske RE, Gemma JN. Arbuscular Mycorrhizae Effects on Growth of Two Hawaiian Species:Indigenous Osteomeles anthyllidifolia (Rosaceae) and Invasive Psidium cattleianum (Myrtaceae). Pac Sci 60(4): 471-482.
Series/Report no.: vol. 60, no.4
Abstract: Two important plant species of Hawai‘i, the indigenous Osteomeles anthyllidifolia (Sm.) Lindl., a component of Hawai‘i’s most endangered habitat, and the highly invasive Psidium cattleianum Sabine were grown with or without arbuscular mycorrhizal fungi in a soilless mix at different soil solution phosphorus (P) levels. At P levels similar to those in the field (0.007 mg P/liter), shoot biomass of inoculated plants of O. anthyllidifolia was 189% greater than that of controls, and that of P. cattleianum was 93% greater. Root weight of O. anthyllidifolia and leaf-tissue P of both species also were significantly higher in inoculated plants. At a higher concentration of soil-solution P (0.020 mg P/liter), inoculated plants of O. anthyllidifolia had 176% more biomass than controls, and those of P. cattleianum had 49% more. In a growth medium with soilsolution P equivalent to that of good agricultural soil (0.200 mg P/liter), inoculated plants of O. anthyllidifolia were 101% larger than controls. Results suggest that presence of arbuscular mycorrhizal fungi is of vital importance to establishment of O. anthyllidifolia in Hawaiian soils and that their absence may limit P. cattleianum invasion of sites that are highly deficient in available P.
Description: v. ill. 23 cm.
Quarterly
Pages/Duration: 12 p.
URI/DOI: http://hdl.handle.net/10125/22582
ISSN: 0030-8870
Appears in Collections:Pacific Science, Volume 60, Numbers 4, 2006



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