Occurrence, pathogenicity and survival of Macrophoma mangiferae in leaves, branches and stems of mango (Mangifera indica L.)

Ralph N. Okigbo

Plant Protection Science, 2001, vol. 37, issue 4, 138-144

Abstract: Frequency of occurrence and persistence of Macrophoma mangiferae Higorani & Sharma on 4-year old mango plants (Mangifera indica L.) growing under various conditions were investigated over two periods of 6 months in South-Eastern Nigeria. Among the five locations studied, the frequency of occurrence of the disease was highest at Umuahia, with 65% for leaves and 41% for stems. The chances of the fungus to survive adverse conditions in mango tissues were higher in the stems and branches than in the leaves; more fungal colonies were recovered from the stems and branches than from the leaves. The fungus survived adverse conditions, forming structures such as chlamydospores and thick walled hyphae under continuous light. In the dark, the fungus remained in vegetative form and hence did not produce any sexual reproductive structures. When subjected to continuous light, the fungus produced pycnidia. Leaving dried leaves and fragments of dried stems and branches on the farms is likely to raise the level of primary inoculum for mango diseases.

Keywords: Macrophoma mangiferae; survival; mango (search for similar items in EconPapers)
Date: 2001
References: Add references at CitEc
Citations:

Downloads: (external link)
http://pps.agriculturejournals.cz/doi/10.17221/8377-PPS.html (text/html)
http://pps.agriculturejournals.cz/doi/10.17221/8377-PPS.pdf (application/pdf)
free of charge

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:37:y:2001:i:4:id:8377-pps

DOI: 10.17221/8377-PPS

Access Statistics for this article

Plant Protection Science is currently edited by Ing. Eva Karská, (Executive Editor PPS)

More articles in Plant Protection Science from Czech Academy of Agricultural Sciences
Bibliographic data for series maintained by Ivo Andrle ().