NDLI: Analyzing genotype by environment interaction in potato using yield-stability index

Content Provider	Springer Nature Link
Author	Cotes, José M. Ñustez, Carlos E. Martinez, Ricardo Estrada, Nelson
Copyright Year	2002
Abstract	The plant breeding program of the National University of Colombia carried out 10 potato regional trials during 1998 and 1999 to evaluate 15 promising potato clones (Solanum tuberosum ssp.andigena). Genotype by environment interaction was analyzed using Kang’s methodology, which links yield performance and phenotypic stability. A MACRO was implemented using the SAS system to obtain yield-stability indices. Shukla’s variance was estimated by restricted maximum likelihood (REML), which allowed handling unbalanced data for both genotypes and replicates. In addition, a multivariate analysis methodology was developed, based on the yield-stability index. This methodology is useful when tuber yield is categorized by size and quality, which is usual in Colombian potato harvests.El programa de mejoramiento en papa, liderado por la Universidad National de Colombia, estableció 10 pruebas regionales durante los años 1998 y 1999 para la evaluatión de 15 genotipos promisoriosde Solanum tuberosum ssp.andigena. Para el analisis e interpretation de la interaction genotipo por ambiente se utilizó la metodologia propuesta por Kang, la cual utiliza un estadístico que reúne la selection por rendimiento y estabilidad fenotipica. Una MACRO en el programa SAS fue implementada para la obtention del indice de rendimiento-estabilidad y la varianza de Shukla estimada por REML (Restricted Maximum Likelihood), la cual permite trabajar con datos desbalanceados tanto para repeticiones como genotipos. Además, se desarrolló una metodología que permitió el análisis multivariado, utilizando como base el índice de rendimiento-estabilidad, lo cual facilita el analisis del rendimiento cuando este se divide en varias categorias, como es el caso del cultivo de papa en Colombia.
Starting Page	211
Ending Page	218
Page Count	8
File Format	PDF
ISSN	1099209X
Journal	American Potato Journal
Volume Number	79
Issue Number	3
e-ISSN	18749380
Language	English
Publisher	Springer-Verlag
Publisher Date	2002-01-01
Publisher Institution	Potato Association of America
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Life Sciences Plant Sciences Animal Genetics and Genomics Agriculture Plant Physiology Plant Pathology
Content Type	Text
Resource Type	Article
Subject	Plant Science Agronomy and Crop Science

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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