Scholarly Journal of Agricultural Science Vol. 3(8), pp. 317-324, August 2013
Available online at http:// www.scholarly-journals.com/SJAS
ISSN 2276-7118 ©2013 Scholarly-Journals
Morpho-agronomic Variation within local genetic resources of Roselle (Hibiscus sabdariffa var sabdariffa L.) in Sudan
El Tahir Ibrahim Mohamed1 and Magdi Ahmed Mohamed El Gabri2
1Plant Genetic Resources Unit, Agricultural Research Corporation, P. O. Box 126, Wad Medani, Sudan. 2Plant Genetic Resources Unit, Elobeid Agricultural Research Station, P. O. Box 429, Elobeid, Sudan..
A total of 126 roselle (Hibiscus sabdariffa var sabdariffa L.) accessions collected from different parts of Sudan were morpho-agronomically characterized during the years 2006, 2007 and 2008. A descriptor list developed by the Plant Genetic Resources Unit of the Agricultural Research Corporation in Sudan was used in the absence of standard international descriptor list. A considerable variation was observed within and between accessions for both qualitative and quantitative characters such as growth habit, leaf, stem, flower and calyx characters. The different descriptor states recorded were found to occur at frequency levels ranging from very rare at 5% or less to abundant at more than 90%. The majority of accessions produced reddish enlarged medium sized calyces with different degrees of red colour. White, small and large calyces were also observed in the rest of accessions. The calyces produced had different four shapes. It was most interesting to note that some accessions flowered in about two months and harvested in less than four months, while others were as late as about four months to flowering and almost six months to harvesting. The variation recorded shows the potential of this germplasm for use in genetic improvement of roselle qualitatively and agronomically.
Key words:Roselle, Sudan, Characterization, Descriptors, Morpho-agronomical variation. Enlarged full ripe calyx.
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