Abstract:
The yield performance of 23 barley (
Hordeum vulgare
L.) genotypes in sixteen test
environments across a barley growing region of Chin
a was evaluated. The experiment
was conducted using a randomized complete block des
ign with three replicates, in two
cropping seasons (2010-2011, in the South; 2012-201
3, in the North). The GGE biplot was
applied to analyze the data obtained in the multi-e
nvironment trials. The results indicated
that either the North or South test sites could be
grouped into three possible mega-
environments, the best- performing and candidate ge
notypes for the North and South
were G7 (Zhongsimai1), G5 (08B26), G17 (G231M004M),
and G13 (Zhe3521),
respectively. Among the sixteen test environments,
E6 (Shihezi) and E12 (Yancheng) had
the greatest discriminating ability, while E1 (Haer
bing), E4 (Shang kuli), E8 (Wuhan),
and E16 (Chengdu) could be dismissed from the futur
e trials due to the similarity of their
ability of discrimination and representation.
Keywords:
Discriminating ability, Genotype main effect, Multi
-environment trial, Stability
