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Citation Information

Type Journal Article - International Journal of Scientific and Research Publications
Title Agronomic performances and stability analysis of upland rice genotypes in North West Ethiopia
Author(s)
Volume 4
Issue 4
Publication (Day/Month/Year) 2014
Page numbers 1-9
URL http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.643.3754&rep=rep1&type=pdf#page=255
Abstract
A field experiment was conducted at Woreta, Metema
and Pawe of North West Ethiopia during the 2008/9 and 2009/10
cropping seasons. Sixteen upland rice genotypes including the
standard check were evaluated with the objective of selecting
stable and high-yielding, disease-resistant and early maturing
varieties. The experiment was laid out in a randomized complete
block design of three replications. Combined analysis of variance
revealed significant variations in genotypes for most parameters
except fertile tillers per plant. Mean squares due to the genotype
× location × year interaction was significant for days to aturity,
1000-seed weight and grain yield (P<0.01). The highest grain
yield of 3.5t ha-1 was recorded by G15, followed by G7 (3.34t ha-
1
). In AMMI analysis, variations due to environments accounted
for 52.48% of the treatment sum of square (SS) while genotypes
and genotype × environment interaction explained 12.06 % and
35.45% of SS, respectively. In GGE biplot, G15 and G7
respectively were the best genotypes in E1, E2, and E6. The
Genotype G15 was relatively stable in grain yield across
environments and it also showed relatively better resistance to
major rice diseases. Hence, G15 could be recommended for
cultivation by the farmers and this variety should be popularized
in larger scale to make use of its merits.

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