Effects of narrowing genetic base and abiotic stress on leaf spotting in Grevillea robusta

Show simple item record

dc.contributor.author Kimatu, Josphert N.
dc.date.accessioned 2014-11-28T09:55:24Z
dc.date.available 2014-11-28T09:55:24Z
dc.date.issued 2011
dc.identifier.citation Journal of Tropical Forest Science 23(2): 117–124 (2011) en_US
dc.identifier.issn 0128-1283
dc.identifier.uri http://www.dss.kefri.org/docs/doc29.pdf
dc.identifier.uri http://hdl.handle.net/123456789/237
dc.description.abstract Grevillea robusta is a widely grown agroforestry tree and is regarded as a pioneering coloniser of disturbed sites. Our current understanding on changes of species due to disturbance, abiotic conditions and biotic interactions is very minimal. We investigated a leaf-spotting disease and abnormal growths on G. robusta in Yala and Kodera forest plots in Nyanza province, Kenya. The study comprised symptomology, identification of causal pathogens as well as tissue and soil analyses. Phyllosticta spp. and Pestalotia spp. fungi were isolated from the leaf spots. Seedling reinoculation confirmed Phyllosticta spp. as the lesser opportunistic cause of the leaf spot. However, mineral and proteoid root analyses suggested that abiotic and genetic factors were the main causes of the leaf spotting. The Yala forest had lower pH, phosphorus toxicity (> 0.07%) and poor water drainage, while the Kodera forest had generally high manganese toxicities in soil and leaf tissue. en_US
dc.language.iso en en_US
dc.publisher Forest Research Institute Malaysia en_US
dc.subject Agroforestry en_US
dc.subject toxicity en_US
dc.subject leaf spots en_US
dc.subject proteiod roots en_US
dc.title Effects of narrowing genetic base and abiotic stress on leaf spotting in Grevillea robusta en_US
dc.type Article en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search Dspace


Browse

My Account