EFFECT OF AMARANTHUS MOSAIC VIRUS (AMV) AND BITTER LEAF MOSAIC VIRUS (BMV) ON GROWTH, PROXIMATE, NUTRIENT CONTENT AND SENSORY ACCEPTABILITY OF GREEN AMARANTH (Amaranthus hybridus L.)
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Date
2016
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School of Agriculture and Agricultural Technology, Federal University of Technology Minna-Nigeria
Abstract
A greenhouse experiment was conducted to evaluate the effect of Bitter leaf mosaic virus (BMV) and
Amaranthus mosaic virus (AMV) on growth response, proximate, nutrient composition and sensory
acceptability of green amaranth (Amaranthus hybridus L.). The treatments comprised single and double
inoculations of A. hybridus with AMV and BMV while buffer inoculated plants served as control. Data were
collected from 1st to 8th week after inoculation (WAI) for plant height, number of leaves, and number of leaves
with viral disease symptoms. Standard methods of the Association of Official Analytical Chemist were used for
determining the proximate composition and sensory acceptability were carried out on the leaves at harvest. The
results showed that the significantly highest percentage disease severity at 8 WAI was recorded in plants
inoculated with AMV (19.3%) followed by BMV (16.2%) and BMV + AMV (15.1%). The growth parameters
from the 5th to the 8th WAI indicated that AMV inoculated plants were the shortest plants (22.6 to 33.7cm) with
the significantly lowest number of leaves (6.9 to 23.6cm) compared to the control plants which were the tallest.
The analysis showed a depletion of the proximate and mineral contents of the leaves by the viruses. However,
the sensory evaluation revealed overall general acceptability of the virus infected plants despite an aversion to
the colour.
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Keywords
Amaranthus species, inoculation, mineral content, proximate analysis, vegetables, virus.