Genotype by Environment Interaction of Potato Breeding Lines Developed for Central-Black Sea Region

Year 2017, Volume: 6 Issue: 2, 32 - 40, 30.09.2017

Yasin Bedrettin Karan , Gungor Yılmaz

Abstract

This study was done as a part of the studies carried out on breeding
potato varieties adaptable to central-north intersectional region. This study
has been started in 2007, with about 20 thousand hybrid potato seedlings and as
a result of clonal selection, 20 clones, performing excellent characteristics
in terms of yield and quality characteristics, were subjected to the analysis of
stability in terms of genotype x environment interactions. The study was
conducted under Tokat-Niksar, Tokat-Kazova (2012-2013) and Tokat-Artova
(between 2011-2012 and 2012-2013) conditions as a randomized complete block
design with 3 replications in 8 different environments, as the year and
location are accepted as an environment. In the study, four commercial
varieties were tested as standards beside White, cream, light yellow and dark
yellow clones.

The data were subjected regression analysis.  Based on the Finlay-Wilkinson regression
coefficients, some of the clones (A7-12, T5-4, T11-10, T5-14, A3-15, A3-167,
and T10-8) which have better yield and quality characteristics than commercial
varieties, showed good adaptation to specific environments while the clones
(T6-28 and A3-234) had good adaptation to all the environments (Tokat-Niksar,
Tokat-Kazova, and Tokat-Artova). Also in terms of dry matter, A13-1 has been
identified as a clone with higher (28.4%) dry matter contents.

Keywords

Potato, Clone Selection, Solanum tuberosum, Breeding, Stability

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