What question did this study set out to answer?

To introduce and evaluate the GGE biplot method for simultaneous cultivar evaluation and mega-environment identification using multi-environment yield trial data.

May 1, 2000Crop Science

Cultivar Evaluation and Mega‐Environment Investigation Based on the GGE Biplot

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Authors

WYWeikai YanAgriculture and Agri-Food Canada LHL. A. HuntUniversity of Guelph QSQinglai ShengUniversity of Guelph

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Implication

Multi-environment trial analysis demonstrates visual cultivar evaluation and mega-environment delineation in Ontario winter wheat, highlighting distinct regional adaptation zones.

Key Points

To introduce and evaluate the GGE biplot method for simultaneous cultivar evaluation and mega-environment identification using multi-environment yield trial data.
Constructed GGE biplots using the first two principal components obtained via singular value decomposition of environment-centered multi-environment trial data.
Applied the biplot methodology to grain yield data from Ontario winter wheat (Triticum aestivum L.) performance trials conducted from 1989 through 1998.
Identified yearly winning cultivars and two distinct mega-environments in Ontario: a minor eastern environment and a major southern and western environment.
Showed that principal component 1 reflects proportional cultivar response associated with average yield, whereas principal component 2 captures disproportional crossover interactions.
Demonstrated that variable crossover interactions across years prevented stable subdivision of the major mega-environment into smaller subareas.

Cite This Study

Yan et al. (2000) studied this question.

synapsesocial.com/papers/69d8a790183921ebcaae322d https://doi.org/10.2135/cropsci2000.403597x

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Implication

Multi-environment trial analysis demonstrates visual cultivar evaluation and mega-environment delineation in Ontario winter wheat, highlighting distinct regional adaptation zones.

Cultivar Evaluation and Mega‐Environment Investigation Based on the GGE Biplot

Discussion

Member takes

Implication

Key Points

Cite This Study

Cultivar Evaluation and Mega‐Environment Investigation Based on the GGE Biplot

Discussion

Member takes

Implication

Key Points

Cite This Study

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