Heritability, genetic advance and correlations of plant height, spike length and productive tillering in bread wheat and durum wheat
2015
Branković, Gordana (Faculty of Agriculture, Belgrade-Zemun (Serbia)) | Dodig, Dejan (Maize Research Institute Zemun Polje, Belgrade-Zemun (Serbia)) | Knežević, Desimir (Faculty of Agriculture, Lešak (Serbia)) | Kandić, Vesna (Maize Research Institute Zemun Polje, Belgrade-Zemun (Serbia)) | Pavlov, Jovan (Maize Research Institute Zemun Polje, Belgrade (Serbia))
The aim of this research was to examine variability, broad-sense heritability, genetic advance of plant height (PH), spike length (SL) and productive tillering (PTC) of 30 genotypes of bread and durum wheat, and correlations between them. Field trials were carried out during 2010-2011 and 2011-2012 growing seasons at the three sites: Rimski Šančevi, Zemun Polje and Padinska Skela. Results of this investigation showed that genotype was the most significant source of variation for SL in bread and durum wheat with 67.1% and 54.4% of explained sum of squares (SS) and for PH in bread wheat with the 66% of SS. Environment represented the most important source of variation forPTC in bread and durum wheat wheat with 68% and 35.9% of SS and also for PH in durum wheat with 51.6% of SS. The ratio of genetic and genotype × environment interaction (σ2 g / σ2 ge)components of variance indicated more stability in bread wheat for PH and SL and less for PTC in both wheat species. Broad-sense heritability (h2) was very high (>90%) for PH and SL in bread and durum wheat, but smaller for PTC(80.7% and 75.6%, respectively). Considering the high obtained values of h2and high expected genetic advance as percent of mean for PH and SL of bread wheat and for PTC of durum wheat the success of selection for desired trait values can be predicted. PH proved to be correlated with PTC at three environments(0.538, 0.532, P < 0.05, 0.708, P < 0.01).
显示更多 [+] 显示较少 [-]