Competition between cultivated rice (Oryza sativa) and wild rice (Oryza punctata) in Kenya
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Date
2008Author
Munene, JT
Kinyamario, JI
Holst, N
Mworia, JK
Type
ArticleLanguage
enMetadata
Show full item recordAbstract
This shade house study examined the effect of competition on the growth performance of cultivated
(Oryza sativa) and wild (Oryza punctata) rice species in Kenya. Growth was assessed for the two
species, grown together and separately, by measuring plant height and tiller number through the
growing season, and flag leaf area and above and below-ground biomass at the end of the growing
season. O. punctata grew to a higher final height (116.00 ± 13.63 cm) attained higher tiller number (9
tillers /plant) and accumulated more biomass (16.68 ± 0.50 g ) than O. sativa while O. sativa attained a
higher flag leaf area (35.00 ± 0.67 cm
2
) than O. punctata (P<0.05). For both species, interspecific
competition was detected as a reduction in flag leaf area, (1.4 and 2.5 cm
2
) for O. punctata and O. sativa
respectively. Flag leaf area is known to relate directly to grain yield. It was concluded that O. punctata is
a better competitor than O. sativa (P<0.05) as it had more aggressive vegetative growth, less reduction
in flag leaf area, attained higher final plant height and phytomass and matured faster than O. sativa
URI
http://www.academicjournals.org/ajar/pdf/pdf%202008/sep/Munene%20et%20al.pdfhttp://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/35924
Citation
African Journal of Agricultural Research Vol. 3 (9), pp. 605-611, September 2008Publisher
AJAR School of Biological Sciences, University of Nairobi