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

This Article Figures Only Full Text 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 Google Scholar Google Scholar Articles by Gutiérrez, L. Articles by Jannink, J.-L. Search for Related Content PubMed Articles by Gutiérrez, L. Articles by Jannink, J.-L. Agricola Articles by Gutiérrez, L. Articles by Jannink, J.-L. Related Collections Other Grain Crops Plant Genetic Resources Statistics

CROP BREEDING & GENETICS

Diversity and Mega-Targets of Selection from the Characterization of a Barley Collection

^a Dep. of Agronomy, Iowa State Univ., Ames, IA 50011
^b Dep. of Ecology, Evolution and Organismal Biology, Iowa State Univ., IA 50011
^c USDA–ARS, U.S. Plant, Soil, and Nutrition Laboratory, Ithaca, New York 14583

^* Corresponding author (luciag{at}fagro.edu.uy).

Germplasm exchange is essential for assuring genetic gain in a breeding program. Two aspects of breeding programs are relevant to making them compatible for germplasm exchange: the amount of genetic diversity within programs and the identification of breeding programs with similar breeding objectives and environments of selection (i.e., mega-targets of selection). The objective of this study was to develop a data-driven method to group breeding programs likely to be compatible for germplasm exchange and to use phenotypic characterization data of barley (Hordeum vulgare L.) from breeding programs to illustrate this method. In two locations in Uruguay we evaluated 20 traits in 353 genotypes of barley from 23 private and public breeding programs distributed worldwide. We found significant amounts of genetic diversity for all traits, but differences in diversity among programs for only seven traits. We identified programs with high (Western Australia Department of Agriculture; University of Saskatchewan; and Svalöf Weibull Ab, Sweden) and low diversity (winter program of Osijek Agricultural Institute, Croatia; spring program of Osijek Agricultural Institute, Croatia; Saatzucht Josef Breun, Germany; Busch Agricultural Resources; USDA-ARS, Aberdeen, ID; and University of Minnesota). We developed a methodology that groups programs with similar performance and response to the environments. We used the methodology to group the 23 breeding programs of barley into sets that might benefit most from germplasm exchange. The identification of compatible programs for germplasm exchange could be relevant for improving genetic gains in breeding programs.

Abbreviations: DTA, days between planting date and anthesis • DTH, days between planting and heading • ME, mega-environment(s) • MTS, mega-target(s) of selection