HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Souza, E. Articles by Skovmand, B. Search for Related Content PubMed Articles by Souza, E. Articles by Skovmand, B. Agricola Articles by Souza, E. Articles by Skovmand, B.

Parentage Analysis of International Spring Wheat Yield Nurseries 17 to 27

Dep. of Plant, Soils, and Entomological Science, Univ. of Idaho, Aberdeen Research and Extension Center, P.O. Box AA, Aberdeen, ID 83210

P. N. Fox and B. Skovmand

International Maize and Wheat Improvement Center, Apdo. 6-641, 06600 Mexico, D.F.

^* Corresponding author (esouza{at}uidaho.edu).

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 cuitivar 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 clusters 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.

Received for publication February 14, 1997.

This article has been cited by other articles:

				M. Smale, M. P. Reynolds, M. Warburton, B. Skovmand, R. Trethowan, R. P. Singh, I. Ortiz-Monasterio, and J. Crossa Dimensions of Diversity in Modern Spring Bread Wheat in Developing Countries from 1965 Crop Sci., November 1, 2002; 42(6): 1766 - 1779. [Abstract] [Full Text] [PDF]