A method for classification and evaluation of testing environments

Brown, K.D. and Sorrells, M.E. and Coffman, W.R. (1983) A method for classification and evaluation of testing environments. Crop Science, 23 (5). pp. 889-893.

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A method is presented to improve the efficiency of cultivar testing first by clustering nursery environments based on selected environmental variables and second by identifying optimum selection environments with clusters by linear regression of the performance of genotypes within an environment on mean genotype performance over all environments. It is predicted that an optimum selection environment should be able to discriminate among genotypes and should consistently predict the performance of genotypes at other sites in the cluster; it will have a high genotypic index regression coefficient (bj) and a high coefficient of determination (r2), respectively. The method is applied to a set of heading date data from the International Rice Cold Tolerance Nursery

Item Type: Article
Additional Information: SNNigam Collection
Uncontrolled Keywords: Varietal testing, Genotype X environment interaction, Oryza sativa L., Heading date.
Author Affiliation: Department of Plant Breeding & Biometry, Cornell University, Ithaca, NY 14853, USA.
Subjects: Statistics and Experimentation
Crop Improvement
Divisions: General
Depositing User: Mr B Krishnamurthy
Date Deposited: 22 Apr 2013 10:33
Last Modified: 22 Apr 2013 10:33
Official URL: http://dx.doi.org/10.2135/cropsci1983.0011183X0023...
URI: http://eprints.icrisat.ac.in/id/eprint/10341

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