Abstract
The purpose of this study was to determine the effect of seed
size on the speed of emergence in the field conditions, which
included the efficiency of germination and sprout production
in laboratory test. The experiment was conducted in a split-plot
design using varieties/lines as the main plot and seed size as the
sub-plot. The results showed no effect of seed sizes on speed
of emergence in field setting both in rainy and dry season.
Nevertheless, the speed of emergence in rainy season was higher
than that of the dry season. Correlation among agronomic
characters revealed that seed size was the character which may
compensate to the other yield components. The result of the field
testings both in rainy and in dry seasons was similar. The
experiments also showed that large seeds had higher germination
percentage than that of small seeds. In general, mungbean sprouts
from large seeds were heavier and had bigger head and stem but
was shorter than the sprouts from small seeds. Therefore, the
results from this study suggested that the large seeds would be
advantageous only for sprout production but small seeds are also
suitable for planting without any effect on early stage of plant growth
such as speed of emergence.