Identifying isoyield environments for field pea production

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cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationAlberta Agriculture, Food and Rural Developmenten
cg.contributor.affiliationUniversity of Albertaen
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.contributor.affiliationInternational Maize and Wheat Improvement Centeren
cg.coverage.countryCanada
cg.coverage.countryMexico
cg.coverage.countryNigeria
cg.coverage.iso3166-alpha2CA
cg.coverage.iso3166-alpha2MX
cg.coverage.iso3166-alpha2NG
cg.coverage.regionACP
cg.coverage.regionAfrica
cg.coverage.regionNorthern America
cg.coverage.regionWestern Africa
cg.coverage.regionCentral America
cg.identifier.doihttps://doi.org/10.2135/cropsci2005.0106en
cg.isijournalISI Journalen
cg.issn0011-183Xen
cg.issue1en
cg.journalCrop Scienceen
cg.reviewStatusPeer Reviewen
cg.subject.iitaPLANT GENETIC RESOURCESen
cg.subject.iitaPLANT PRODUCTIONen
cg.subject.iitaPLANT BREEDINGen
cg.subject.iitaPLANT DISEASESen
cg.subject.iitaPESTS OF PLANTSen
cg.subject.iitaFOOD SECURITYen
cg.subject.iitaLIVELIHOODSen
cg.subject.iitaAGRIBUSINESSen
cg.subject.iitaPOST-HARVESTING TECHNOLOGYen
cg.subject.iitaHANDLING, TRANSPORT, STORAGE AND PROTECTION OF AGRICULTURAL PRODUCTSen
cg.subject.iitaSMALLHOLDER FARMERSen
cg.subject.iitaGENETIC IMPROVEMENTen
cg.subject.iitaCROP HUSBANDRYen
cg.volume45en
dc.contributor.authorYang, R.en
dc.contributor.authorBlade, S.en
dc.contributor.authorCrossa, J.en
dc.contributor.authorStanton, D.en
dc.contributor.authorBandara, M.en
dc.date.accessioned2018-03-23T06:48:54Zen
dc.date.available2018-03-23T06:48:54Zen
dc.identifier.urihttps://hdl.handle.net/10568/91856
dc.titleIdentifying isoyield environments for field pea productionen
dcterms.abstractCultivars are often recommended to producers based on their averaged yields across sites within a geographic region. However, this geography-based approach gives little regard to the fact that not all sites in a given region have the same level of production capacity. The objective of this paper was to describe a performance-based approach to identifying groups of sites with similar yielding ability (i.e., isoyield groups), but not necessarily contiguous, and its use for analyzing the yield data from field pea (Pisum sativum L.) cultivar trials conducted across the Province of Alberta, Canada, from 1997 to 2001. Of 34 sites tested during the 5 yr, 11 were in 1997, 20 in 1998 and 2000, 22 in 1999, and 21 in 2001. The consecutive use of regression analysis and cluster analysis allowed for classification of test sites in individual years into different isoyield groups: six in 1997; 10 in 1998, 2000, and 2001; and 12 in 1999. However, the most meaningful isoyield groups were those based on the data across the 5 yr through a normalization procedure developed for averaging the multiyear unbalanced data. The use of such averages significantly lessens the impact of random year-to-year variation on the sites, resulting in only seven isoyield groups for the 34 test sites. The identification of isoyield environments (i) facilitates choosing appropriate cultivars for specific environments and (ii) provides a basis for scaling down the cultivar testing program in Alberta.en
dcterms.accessRightsLimited Access
dcterms.available2005-11
dcterms.bibliographicCitationYang, R., Blade, S., Crossa, J., Stanton, D. & Bandara, M. (2005). Identifying isoyield environments for field pea production. Crop science, 45(1), 106-113.en
dcterms.extentp. 2337-2345en
dcterms.issued2005-11
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherWileyen
dcterms.subjectisoyield groupsen
dcterms.subjectcultivarsen
dcterms.subjectgenotypesen
dcterms.subjectdendrogramen
dcterms.subjectclustersen
dcterms.subjectnontraditional cropsen
dcterms.typeJournal Article

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