Evaluation of yield stability of covered oat genotypes based on the results of preliminary trials
Krzysztof Ukalski
krzysztof_ukalski@sggw.edu.plKatedra Ekonometrii i Statystyki, Zakład Biometrii, Szkoła Główna Gospodarstwa Wiejskiego w Warszawie (Poland)
Tadeusz Śmiałowski
Instytut Hodowli i Aklimatyzacji Roślin — PIB, Zakład Roślin Zbożowych w Krakowie (Poland)
Abstract
The analysis of yield of covered grain oat strains was described in the paper. The data came from preliminary trials performed in 2007. In total 30 covered grain oat genotypes and 2 standards were examined in 6 environments. The biplot method for GGE, AMMI, SREG i GREG models has been applied for data analysis. Genotypes with highest GGE effect (i.e. sum of main genotype effects G and genotype-environment effects GE) in each environment were indicated on the basis of biplots. Among 30 covered grain oat lines, STH 657, STH 5242, STH 123, POB 483/03, STH 289, CHD 1193/04, CHD 1601/04, CHD 1382/03, CHD 1263/04 were with the highest yield across environments. The most stable covered grain oat lines were: CHD 1382/03, CHD 1263/04, STH 5071, CHD 1430/02 and the most unstable: STH 5244 i CHD 1534/04. The biplot for GREG showed that three mega-environments concentrated the 6 environments tested in this study.
Keywords:
AMMI, GGE, GREG, SREG, genotype-environment interaction, covered grain oat, stabilityReferences
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Authors
Krzysztof Ukalskikrzysztof_ukalski@sggw.edu.pl
Katedra Ekonometrii i Statystyki, Zakład Biometrii, Szkoła Główna Gospodarstwa Wiejskiego w Warszawie Poland
Authors
Tadeusz ŚmiałowskiInstytut Hodowli i Aklimatyzacji Roślin — PIB, Zakład Roślin Zbożowych w Krakowie Poland
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