Genotype-environment interaction in yield of winter rape in post registration variety trials
Jan Kaczmarek
jan.kaczmarek@upwr.edu.plKatedra Hodowli Roślin i Nasiennictwa Akademii Rolniczej we Wrocławiu (Poland)
Andrzej Kotecki
Katedra Szczegółowej Uprawy Roślin Akademii Rolniczej we Wrocławiu (Poland)
Ludwik Kotowicz
Stacja Doświadczalna Oceny Odmian, Tomaszów Bolesławiecki (Poland)
Ryszard Weber
Instytut Uprawy Nawożenia i Gleboznawstwa, Jelcz Laskowice (Poland)
Abstract
Winter oilseed rape is an important crop as the demand for plant oils has successively been growing. The yield trials with rape cultivars were conducted at 4 sites (Głubczyce, Krościna Mała, Tarnów and Tomaszów Bolesławiecki) in the years 1999–2001. Standard and intensive variants of cultivation were applied. In the intensive variant, as compared with the standard one, a dose of nitrogen fertilization higher by 50 kg/ha, application of anti-lodging agents, foliar feeding of plants with microelements and complete control of fungal diseases and insects were used. Herbicides, potash and phosphate fertilizers were applied at the same level in both variants. Statistical analysis was performed according to computer program Sergen 3. The study of G × E interaction structure revealed a major contribution of the Krościna site to the significance of the interaction. At this site, the yields of winter rape were relatively high, but variable. In contrast, stable but lower yields were observed at Tomaszów Bolesławiecki. The results of three-year trials indicate that cultivars Lisek and Bristol can be recommended for standard cultivation in the Lower Silesia region. The yields of Buffalo are satisfactorily high at both variants of cultivation, but this cultivar exhibits higher sensitivity to changes in environmental conditions. A differential response of rape genotypes to environmental factors suggests that it is advisable to survey rape cultivars at various locations.
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Keywords:
rape cultivars, genotype × environment interaction, tillage systemsReferences
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Authors
Jan Kaczmarekjan.kaczmarek@upwr.edu.pl
Katedra Hodowli Roślin i Nasiennictwa Akademii Rolniczej we Wrocławiu Poland
Authors
Andrzej KoteckiKatedra Szczegółowej Uprawy Roślin Akademii Rolniczej we Wrocławiu Poland
Authors
Ludwik KotowiczStacja Doświadczalna Oceny Odmian, Tomaszów Bolesławiecki Poland
Authors
Ryszard WeberInstytut Uprawy Nawożenia i Gleboznawstwa, Jelcz Laskowice Poland
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Copyright (c) 2003 Jan Kaczmarek, Andrzej Kotecki, Ludwik Kotowicz, Ryszard Weber
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