Yielding of old and modern Polish wheat cultivars under different nitrogen inputs as assessed*by combined using AMMI and cluster analyses.

J. Paderewski


Warsaw University of Life Sciences (Poland)

W. Mądry


Warsaw University of Life Sciences (Poland)

J. Rozbicki


Warsaw University of Life Sciences (Poland)


Abstract

The experimental material consisted of 15 winter wheat cultivars (14 Polish-bred cultivars and one British cultivar) representing the results of over 100 years of breeding. The cultivars were tested in two-factor field experiments (cultivars were one factor and nitrogen fertilization rates, the other factor) carried out in split-plot design across two consecutive years. This paper demonstrates a combined using AMMI and cluster analyses for effective and efficient estimate of grain-yield response to investigated environments (combinations of 2 years × 3 nitrogen fertilization rates). First, homogenous groups of cultivars were identified in terms of their genotypic profile of AMMI(s) estimates of GEI effects using Ward’s method of cluster analysis. Then, these groups were divided into separate homogenous subgroups with respect to genotype means. The cultivars in each subgroup have a similar grain yield response to the environments and, then, similar adaptation pattern, although the genotype groups differed in adaptation to these environments...


Keywords:

AMMI analysis, cluster analysis, cultivar's adaptation patterns, wheat cultivars

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Published
2010-12-01

Cited by

Paderewski, J. ., Mądry, W., & Rozbicki, J. (2010). Yielding of old and modern Polish wheat cultivars under different nitrogen inputs as assessed*by combined using AMMI and cluster analyses. Plant Breeding and Seed Science, 62, 117–136. Retrieved from http://ojs.ihar.edu.pl/index.php/pbss/article/view/578

Authors

J. Paderewski 

Warsaw University of Life Sciences Poland

Authors

W. Mądry 

Warsaw University of Life Sciences Poland

Authors

J. Rozbicki 

Warsaw University of Life Sciences Poland

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