Abstract
As a prerequisite for the breeding of virus-resistant okra cultivars, the effect of Okra mosaic
virus infection on physiological performance of ten okra cultivars were assessed under field
conditions within the coastal savannah agro-ecological zone of Ghana. All cultivars
succumbed to the disease and expressed varying degrees of symptoms. The results showed
that plant height at initial and 50% flowering were significantly reduced with cultivar
Clemson spineless showing the highest reduction of 38% and 35% respectively. Plant height
at 50% podding was also reduced in all cultivars with the highest reduction (40%) occurring
in cultivar Clemson spineless. Virus-infected plants of cultivars Kwabenya 1, Labadi dwarf
and Asutem took on the average 43 days to attain 50% flowering compared to 25 days in
healthy or control plants. Diseased plants had significantly (P<0.05) delayed, taking on the
average 47 days after planting to attain 50% podding compared to the control plants with an
average of 35 days. Infected plants of cultivars Kwabenya 1 and Labadi dwarf took the
highest number of 51 days to attain 50% podding. Pod length and width were also reduced in
all cultivars but were highest in cultivars Lucky 19 F1 and Clemson spineless at 52.19% and
46.25% respectively. Based on this assessment, cultivars Adom and Asutem which were less
affected in terms of disease severity and fruit yield reduction could be exploited in future
breeding programmes.
Samuel Amiteye, Andrew Sarkodie Appiah, Frederick Boateng, Jacob Teye Kutufam, Harry Mensah Amoatey. (2021) Physiological changes associated with Okra mosaic virus infection in field grown okra plants., Asian Journal of Agriculture and Biology, Volume-09, Issue-2.
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