Karşıt Çevresel Koşullarda Tritikale (xTriticosecale Wittm.) Verim Sıralama Modellerinin Analizi ve Değerlendirilmesi

Year 2017, JOTAF / JOURNAL OF TEKIRDAG AGRICULTURAL FACULTY, 77 - 81, 19.09.2017

Hristo Stoyanov

Abstract

Verimin analizi ve değerlendirilmesi tahıllarda ıslah sürecinin önemli bir aşamasıdır.

Keywords

Kontrast koşullar, çevre, tritikale

Analysis and Assessment of Yield Ranking Models in Triticale (xTriticosecale Wittm.) in Contrasting Environmental Conditions

Abstract

The analysis and evaluation of yield is an important stage of the breeding process in cereals. There are various

methods for grouping and ranking of the tested genotypes by their yield, which allows for a correct interpretation of

the interaction of the environment with the genotype. Triticale as a product of wide hybridization is characterized by

certain features, which requires the applicable models for yield evaluation in other cereals to be analyzed in this crop.

For this purpose five yield ranking models were assessed in 16 triticale varieties for a three-year period. The three

monitored periods were characterized by contrasting agro-climatic conditions of the environment. With the highest

efficiency was the model using average standard value formed by values of check varieties in the experiment. With a

good performance for yield evaluation are also models in which the yield is adjusted by the variation caused by

different environmental conditions – heritability adjusted (HA) model and Hi-model. In spite of this fact, HA-grouping

is very similar to the grouping of the varieties by their absolute yield. This is related to the absence of many locations

of the study, regardless of the contrasting agro-climatic conditions. On the other hand, the Hi-model enables

interpretation of yield and grouping of yield reaction in different varieties without multilocation trials. Despite some

of their disadvantages, each of the used models could be applied to the analysis of the yield in periods of different

conditions, depending on the specific purpose of the breeding program.

Keywords

Contrasting conditions, environment, triticale

References

• Aljarrah, M., L. Oatway, S. Alberts and C. Bergen, 2014. Variability, heritability and genetic in some agronomic and forage quality characters of spring triticale in western Canada. Communications in Agricultural and Applied Biological Sciences, Ghent University, 79(4): 9-18.
• Banjac B., V. Mladenov, M. Dimitrijevic, S. Petrovic and J. Bocanski, 2014. Genotype × environment interactions and phenotypic stability for wheat grown in stressful conditions- Genetika, Vol 46, No. 3, 799-806