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Cereal Research Communications

, Volume 33, Issue 4, pp 769–776 | Cite as

A study of the yield stability of winter wheat varieties

  • P. PepóEmail author
  • Z. Győri
Article
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Abstract

In our long-term experiment the analyses of stability were conducted in one shorter (years 2001–2003) and one longer (years 1994–2003) periods by using different numbers (2–6) of varieties in each one of the periods. The results of our research proved that the method, applied can be efficiently used to analyse the environmental responses, the behaviour under varying environmental conditions of different varieties. Varieties can adapt themselves differently to favourable and unfavourable environmental conditions. In general, varieties (e.g. older varieties, like Mv 15, Mv 20, and new varieties, like Lupus, Mv Emese) that give relatively good yields under unfavourable conditions (2–3 t. ha−1 environmental average) will utilise improving environmental conditions (7–8 t. ha−1 environmental average) to a. lesser extent and vice versa. Varieties Mv 21, GK Öthalom and Mv Palotás (a currently cultivated variety) made good use of intensive growing conditions. The data in this paper may assist in choosing varieties best suited to the production and cultivation conditions of the production site.

By applying stability analyses we proved that the stability of the control treatment was the most favourable over the investigation period, which good yield stability, however, manifested at very low yield levels. Our findings showed that under more intensive environmental conditions (7–9 t. ha−1 yield level) appropriate and optimum fertilizer application was very effective and in comparison to the control treatment the yield differences between optimal fertilizer treatments were up to as much as 1–6 t. ha−1. Under favourable environmental conditions the highest yields were obtained when a. fertilizer ratio of N120+PK was applied. Under unfavourable conditions (these may be either or both ecological and cultivation conditions), however, only retrained, moderate fertilizer doses are recommended. Under extremely unfavourable conditions (very dry cropping year) the linear regression curves for fertilizer treatments were below those of the control treatments, which referred to yield depressions due to water deficiency.

Keywords

winter wheat yield-stability varieties long-term experiment 

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© Akadémiai Kiadó, Budapest 2005

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  1. 1.Department of Crop Production and Applied EcologyUniversity of Debrecen, Centre of Agricultural Sciences, Faculty of AgronomyDebrecenHungary
  2. 2.Department of Food Science and Quality AssuranceUniversity of Debrecen, Centre of Agricultural Sciences, Faculty of AgronomyDebrecenHungary

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