Yielding trends of winter and spring wheat based on preliminary trials experiments

Tadeusz Drzazga

kobierzyce@nasiona.com.pl
Hodowla Roślin Rolniczych — Nasiona Kobierzyc (Poland)

Paweł Krajewski


Instytut Genetyki Roślin PAN w Poznaniu (Poland)

Ludwik Spiss


Katedra Hodowli Roślin i Nasiennictwa, Akademia Rolnicza w Krakowie (Poland)

Abstract

The paper analyzes the changes in yielding of spring and winter wheat on the basis of breeding trials conducted in the years 1981–2004. Results of trials from Pustków and Henryków (Dolny Śląsk) were used for spring wheat, and results from Pustków and Polanowice (Małopolska) for winter wheat. The trend of changes was estimated by locally weighted linear regression. For spring wheat the regression line shows no genetically determined increase of yielding until 1999; only in the last five years the productivity rised. For winter wheat the trend of general mean and the mean for standard varieties is increasing, which shows that new varieties with better productivity were continuously introduced. In the whole period the yield of the best varieties was substantially higher than the yield of the best standards, which proves high effectively of Polish breeding with respect to improvement of yielding.


Keywords:

plant breeding, grain yield, yielding potential, winter wheat, spring wheat

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Published
2005-03-31

Cited by

Drzazga, T., Krajewski, P. and Spiss, L. (2005) “Yielding trends of winter and spring wheat based on preliminary trials experiments”, Bulletin of Plant Breeding and Acclimatization Institute, (235), pp. 23–30. doi: 10.37317/biul-2005-0058.

Authors

Tadeusz Drzazga 
kobierzyce@nasiona.com.pl
Hodowla Roślin Rolniczych — Nasiona Kobierzyc Poland

Authors

Paweł Krajewski 

Instytut Genetyki Roślin PAN w Poznaniu Poland

Authors

Ludwik Spiss 

Katedra Hodowli Roślin i Nasiennictwa, Akademia Rolnicza w Krakowie Poland

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Copyright (c) 2005 Tadeusz Drzazga, Paweł Krajewski, Ludwik Spiss

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