STABILITY OF GRAIN WEIGHT PER SPIKE IN DIFFERENT WHEAT GENOTYPES IN YEARS WITH PRONOUNCED CLIMATE CHANGE

Climate changes and ecological sustainability in agriculture and food production in Serbia, the region and Southeastern Europe : proceedings, (pp. 107-114)

AUTHOR(S) / АУТОР(И):Kristina Luković1, Kamenko Bratković2, Veselinka Zečević1, Aleksandra Rakonjac1, Ivan Tupajić1, Mirela Matković Stojšin3, Vladimir Perišić1

1Institute for Vegetable Crops Smederevska Palanka, S. Palanka, Serbia, 2Center for Small Grains and Rural Development, Kragujevac, Serbia, 3Tamiš Research and Development Institute, Pančevo, Serbia

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DOI: 10.46793/MAK2025.107L

ABSTRACT / САЖЕТАК:

Grain weight per spike is an important yield component, greatly influenced by environmental factors. The aim of this research was to examine the stability of different wheat genotypes in terms of grain weight per spike under different agroecological conditions. The research was conducted during 2013/2014 at three locations (Kragujevac, Sombor, and Kruševac). The AMMI model was used to assess the genotype × environment interaction. The results of the analysis of the variance of the AMMI model for grain weight per spike showed statistically significant differences between the studied genotypes, locations, and their interactions. Both genotype and environment contributed 33% to the total variation of the experiment, while the contribution of the G × E interaction was 9.78%. The most stable genotypes were KG-244/4, KG-1/6, KG-52/23, and KG-307/4, with the KG-244/4 genotype achieving an average value of grain weight per spike at the average level of the experiment. The KG-1/6, KG-52/23, and KG-307/4 genotypes had above-average values of the observed traits. Kragujevac emerged as the most productive locality, achieving the highest average grain weight per spike, though with a significant interaction value. The smallest interaction effect was acquired in Kruševac but with the lowest average value of the studied trait. The genotype KG-52/23 achieved the highest average value of grain weight per spike and exhibited the highest stability of all analyzed genotypes. This indicates that the genotype KG-52/23 retains good productive characteristics of the spike even in less favorable environmental conditions, which makes it suitable for growing in different agroecological conditions. In breeding programs, wheat genotypes like this can be the basis for the future improvement of productive traits, primarily grain yield.

KEYWORDS / КЉУЧНЕ РЕЧИ:

Wheat, Grain weight per spike, Stability, AMMI model, Climate change

ACKNOWLEDGMENT:

The research presented in this article is a part of a scientific project (Contract numbers: 451-03-66/2024-03/200216, 451-03-66/2024-03/200054) and is supported by the Ministry of Science, Technological and Development.

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