Parentage analysis of international spring wheat yield nurseries 17 to 27
By: Souza, E.
Contributor(s): Fox, P.N [coaut.] | Skovmand, B [coaut.]
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Material type: 
ArticlePublisher: 1998ISSN: 1435-0653 (Revista en electrónico).Subject(s): Ancestry | Genetic inheritance | Heritability AGROVOC | Research projects | Spring crops | Varieties | CIMMYT | Triticum | Wheat AGROVOC | Plant breeding AGROVOC
In:
Crop Science v. 38, no. 2, p. 337-341Summary: Breeders can increase genetic diversity by selecting lines with novel parentage from international nurseries. A database program, WCOP, an application of the International Center for Maize and Wheat Improvement (CIMMYT) Wheat Pedigree Management System (WPMS), calculated the coefficient of parentage (COP) among cultivars and was used to study 169 wheats from the International Spring Wheat Yield Nurseries (ISWYN) No. 17 to 27, and a set of 27 reference cultivars. The average COP (excluding similarity values of cultivars with themselves) among the 196 lines was 0.14. The similarity between the ISWYN cultivar group and the reference cultivar group was 0.08. Average internal COP values for U.S.-Canadian, Australian, and ISWYN sets were 0.18, 0.30, and 0.14, respectively. The ISWYN cultivars were clustered by means of COP values into genealogically similar groups. The largest ISWYN dusters were divergent from U.S., Canadian, and Australian standard spring cultivars, The clusters highlight divergent germplasm that may broaden the genetic base of breeding programs in temperate zones.Collection: CIMMYT Staff Publications CollectionCollection: Serials Collection
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CIMMYT Knowledge Center: John Woolston Library
Lic. Jose Juan Caballero Flores
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Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0011-183X
Breeders can increase genetic diversity by selecting lines with novel parentage from international nurseries. A database program, WCOP, an application of the International Center for Maize and Wheat Improvement (CIMMYT) Wheat Pedigree Management System (WPMS), calculated the coefficient of parentage (COP) among cultivars and was used to study 169 wheats from the International Spring Wheat Yield Nurseries (ISWYN) No. 17 to 27, and a set of 27 reference cultivars. The average COP (excluding similarity values of cultivars with themselves) among the 196 lines was 0.14. The similarity between the ISWYN cultivar group and the reference cultivar group was 0.08. Average internal COP values for U.S.-Canadian, Australian, and ISWYN sets were 0.18, 0.30, and 0.14, respectively. The ISWYN cultivars were clustered by means of COP values into genealogically similar groups. The largest ISWYN dusters were divergent from U.S., Canadian, and Australian standard spring cultivars, The clusters highlight divergent germplasm that may broaden the genetic base of breeding programs in temperate zones.
English
9805|Crop Science Society of America (CSSA)|EE|R97-98ANALY|anterior|WP|1998kelly|FINAL9798|1
CIMMYT Staff Publications Collection
Serials Collection
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