If genotype (G) ranks change from one environment (E) to another, genotype by environment interactions
(GEI) reflects the need for testing Gs in numerous Es in order to obtain reliable results. The aim of this study
was to compare 16 non-parametric stability statistics (NPSSs) for GEI on grain yields of 15 durum wheat
genotypes, consisting of 11 advanced lines selected from Turkish National Durum Wheat Breeding Program
(TNDWBP) and four checks, tested in 12 rain-fed environments during the 2 cropping seasons (2009–2010 and
2010-2011) in Turkey. The combined ANOVA indicated that G, E and GEI effects were significant for grain
yield. According to analyses of NPSSs, the highest in ranking (TOP), percentage of adaptability (PA), rank
mean (RM) and yield-stability (YS) statistics were positively associated with grain yield and therefore
characterized under the dynamic concept of stability. In addition, spearman rank correlation analysis revealed
that only TOP, PA, RM and YS statistics would be useful for simultaneous selection for high grain yield and
stability. Based on the 16 NPSSs used in this study, Dumlupinar cultivar (G15) was both the most stable and
one of the highest yielding ones. On the other hand, G5 and G7 were the most stable ones among the advanced
lines tested, but their yield performances were lower. As a result, this study showed that the crossing block of
TNDWBP should be enriched by germplasm being capable of dynamic stability, wide adaptation and higher
yielding.
Durum Wheat (T. durum L.) Grain Yield Genotype by Environment Interaction Non-parametric Stability Statistics
Primary Language | English |
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Journal Section | Articles |
Authors | |
Publication Date | June 1, 2016 |
Published in Issue | Year 2016 Volume: 21 Issue: 1 |
Turkish Journal of Field Crops is published by the Society of Field Crops Science and issued twice a year.
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Ege University, Faculty of Agriculture,Department of Field Crops
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