Genotype × environment interaction and stability of grain yield and selected quality traits in winter wheat in Central Asia
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Shakhnoza Khazratkulova, Ram Sharma, Amir Amanov, Zokhid Ziyadullaev, Oybek Amanov, Safar Alikulov, Zafar Ziyaev, Dinara Muzafarova. (27/11/2015). Genotype × environment interaction and stability of grain yield and selected quality traits in winter wheat in Central Asia. Turkish Journal of Agriculture and Forestry, 39, pp. 920-929.
Abstract
High grain yield and improved quality determine the commercial success of winter wheat (Triticum aestivum L.) varieties in
Central Asia. This study was conducted to determine the effect of environment on grain yield, 1000-kernel weight (TKW), test weight
(TWT), protein, and gluten content, and to identify superior wheat genotypes for yield and quality. Thirty winter wheat genotypes were
evaluated in 3 years (2010–2012) over multiple locations. A genotype and genotype × environment interaction biplot analysis was used
to determine the superior genotypes. There were significant effects of environment and genotype × environment interaction on yield
and quality traits. The 30 wheat genotypes showed variations for grain yield (3.7–5.6 t ha–1), TKW (33.6–42.4 g), TWT (753–797 g/L),
protein (13.3%–14.8%), and gluten (27.2%–29.5%) content. There was a significant positive correlation between grain yield and TKW
in three out of seven environments. There was no correlation of grain yield with TWT, protein, and gluten content with one exception.
There were different sets of five most superior genotypes for individual traits. However, certain genotypes were superior based on grain
yield and quality traits. Gozgon, Elomon, ID800994.W/Vee//Lagos-12, Jaikhun, and Kroshka were the five most superior genotypes for
four quality traits. Elomon, Gozgon, Jaikhun, ID800994.W/Vee//Lagos-12, and Kiriya were the five most superior genotypes based on
grain yield, TKW, TWT, protein, and gluten content. This study demonstrates success in wheat breeding for combined high yield and
improved quality in winter wheat. This study provides information on the combined stability of high yield and improved quality of the
internationally important winter wheat genotypes. Therefore, the results of this study could be valuable for national and international
winter wheat breeding programs to develop new varieties with high stable grain yield and quality.
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Sharma, Ram https://orcid.org/0000-0002-7785-363X