Abstract:
Hundred traditional rice cultivars were evaluated for their yield potential and
agronomic characters at the field condition at Faculty of Agriculture,
Mapalana. Experiment was conducted with four replicates according to the
randomized complete block design. Plant height (cm), number of fertile
tillers/plant, number of fertile spikelets/panicle were measured in an
individual rice cultivar before harvesting and panicle weight (g), 100 grain
weight (g) and yield/plant (g) were measured after harvesting. Grain yield
was positively and significantly correlated (α = 0.01) with plant height (r =
0.278). Come to a decision on what parameters the best cultivars must be
selected, a classical compromise programming was applied. Classical
compromise programming is a multi-criteria decision analysis technique
used to identify the best compromise solution from a set of solutions by
some measure of distance. Finally, a sensitivity analysis was carried out
using path coefficients so that the role of each parameter on the selection of
the yield can be understood. To understand the effect of plant height on the
field suitability of rice cultivars, plant height parameter was not included into
multi-criteria decision analysis. According to the relative distances, all the
rice cultivars were categorized in to 10 groups. To understand the
contribution of plant height in determining these different groups of
traditional rice cultivars, average plant height of each group was calculated.
It was found that there was no significant difference in plant height in these
groups.
