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. 2016 Mar 7;7:253. doi: 10.3389/fpls.2016.00253

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Copyright © 2016 Sharma, Ghosh, Telangre, Rathore, Saifulla, Mahalinga, Saxena and Jain.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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GGE biplot showing the relationship among 18 environments based on Fusarium wilt incidence of 29 pigeonpea genotypes evaluated across nine locations in India. First and second principal components PC1 (wilt incidence) and PC2 (resistance stability) explained 63.03 and 17.46% of total variation. The environments are denoted by first two letters of the location followed by year (2007, 07; 2008, 08); vectors are as solid blue lines. Those genotypes contributing the most to the interaction delimit the vertices of a polygon comprising the rest of accessions. A perpendicular line was drawn to each side of the polygon, forming eight individual sectors.