Analysis of the genotype×environment (GE)
interaction of barley (Hordeum vulgare L.) can
aid in detecting genotype performance better
under diverse and harsh environments. Sixteen
advanced breeding lines and two cultivars were
tested across five locations at Gachsaran, Gonbad,
Ilam, Lorestan and Mughan districts during
three years of 2017 to 2019. Stability analysis
was determined using 19 different variance and
regression methods with 26 univariate statistics
because each method explores stability from
different aspects and all of them can reflect
a comprehensive stability characteristic of
genotypes. The result showed that environment,
genotype and GE contributed 92, 2 and 8% of the
total variation and there is no strongest genetic
control. According to the GE sum squares-based
parameters, genotypes G13, G12 and G15 were
more stable. The coefficient of line slope and
residual variance of common and adjusted linear
regression, manifested G1, G2, G12 and G18 as
the most stable and responsive genotypes. The
selective value of genotype (SVG) identified G6,
G10 and G11 as the most stable genotypes while
G2, G5 and G13 were the most stable genotypes
based on superiority measure (SM). According to
H parameter, genotypes G2, G13 and G18 were
identified as the most stable genotypes while the
dynamic CV and dynamic regression introduced
G3 and G15 as the most stable genotypes. The
relative superiority (RS), proposed G1, G2 and
G5 as the most stable genotypes. Finally, H
statistic, RS and SM could be recommended for
stability analysis in future breeding programs for
the simultaneous selection of yield and stability