@article{
author = "Pavlov, Jovan and Delić, Nenad and Čamdžija, Zoran and Branković, Gordana and Milosavljević, Nataša and Grčić, Nikola and Božinović, Sofija",
year = "2023",
abstract = "With global climate change including unpredictable geographic and temporal weather
patterns that lead to significant genotype × environment interaction (GEI) the maize
performance assessment would need to be complemented with stability analysis. The
objectives of this study were: i) estimation of parametric and non-parametric stability
indices for grain yield of late maturity maize hybrids, ii) assessing correlations and
grouping of stability indices for grain yield of late maturity maize hybrids. The eight
maize hybrids of FAO 700 maturity group (ZP1-ZP7, and check Ch) were evaluated for
grain yield in the multi-environment trial including five locations in Serbia during 2020.
and 2021. year. Stability analyses included twenty parametric and non-parametric indices,
Principal Component Analysis (PCA) and Pearson’s correlations between stability
indices. The sum of ranks for tested late maturity maize hybrids were in the interval from
37 (ZP6) to 146 (ZP4). The average rank was in the range from 1.8 (ZP6) to 7.3 (ZP4).
The interval of variation for standard deviation of average ranks for tested maize hybrids
was from 1.3 (ZP4, Ch) to 2 (ZP2) indicating satisfying accordance of utilized parametric
and non-parametric stability measures. The highest average grain yield across all tested
environments was observed for ZP1, which was second most stable hybrid. The most
stable late maturity maize hybrid tested over ten environments was proven to be ZP6 with
sum of ranks and average rank of 37 and 1.8, respectively, with standard deviation of
average rank 1.5. PCA biplot showed two groups of parametric and non-parametric stability estimates: I group-coefficient of variation (CVi), Eberhart and Russel’s regression
coefficient (bi), Perkins and Jinks’s regression coefficient (Bi), GEI variance component
(θ(i)), coefficient of determination ( ); II group-Eberhart and Russel’s deviation from
regression , Wricke’s ecovalence Shukla’s stability variance Perkins
and Jink’s deviation from regression , superiority measure the mean of the
absolute rank differences of a genotype over all tested environments the variance
among the genotype ranks over all tested environments ( , the sum of the absolute
deviations for each genotype relative to the mean of ranks , the sum of squares of rank
for each genotype relative to the mean of ranks -
Thennarasu non-parametric stability estimates, mean variance component (θi), Kang’s
rank-sum (KRi). Pearson’s correlation bring along the redundant stability indices and one
can choose to use or , bi or Bi, or θi, or θi.",
publisher = "Društvo genetičara Srbije",
journal = "Genetika",
title = "Grain yield stability estimates of late maturity maize hybrids",
pages = "522-505",
number = "2",
volume = "55",
doi = "10.2298/GENSR2302505P"
}
