Evaluation of bread wheat genotypes in irrigated and rainfed conditions using biplot analysis

Abstract

This study was carried out in 2015-2016 and 2016-2017 seasons under supplemented irrigation (IC) and rainfall conditions (RC) of Diyarbakir in Turkey, was to determine high adaptive yielding with high quality bread wheat genotypes. The obtained data were analyzed using variance and GGE-biplot analysis methods, and the genotypes (G) were evaluated for drought tolerance indices. The average grain yield of two year ranged from 5820 to 6950 kg ha -1 on rainfall conditions and 7880 to 9050 kg ha -1 under supplemented irrigation conditions. The GGE biplot graph showed that G3, G6 and G21 were best genotypes for grain yield. Although G23 did not have the highest grain yield, it was determined that it represented the most stable line. Furthermore, G12 and G16 were determined as suitable genotypes for irrigated conditions and G21 for rainfall condition. It was determined that mean productivity (MP), stress tolerant index (STI), geometric mean productivity (GMP) and harmonic mean (HM) parameters were related with Yp (supplemented irrigation yield) and Ys (rainfall condition yield). Also, yield index (YI), drought resistance index (DRI), yield stability index (YSI) was related with Ys. In the study concluded that the lines G6, G12, G16 and G21 could be candidates for registration. © 2019, ALÖKI Kft., Budapest, Hungary.