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

This Article Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (4) Citing Articles via Google Scholar Google Scholar Articles by Cornelious, B. K. Articles by Sneller, C. H. Search for Related Content PubMed Articles by Cornelious, B. K. Articles by Sneller, C. H. Agricola Articles by Cornelious, B. K. Articles by Sneller, C. H. Related Collections Soybean Plant Genetic Resources Crop Genetics

PLANT GENETIC RESOURCES

Yield and Molecular Diversity of Soybean Lines Derived from Crosses of Northern and Southern Elite Parents

^a OARDC, Dep. of Horticulture and Crop Science, 1680 Madison Ave., Wooster, OH 44691
^b Dep. Crop, Soil, and Environmental Science, 115 Plant Science Building, University of Arkansas, Fayetteville, AR 72701

* Corresponding author (csneller{at}uark.edu)

Genetic diversity is low in southern United States elite soybean [Glycine max (L.) Merr.] cultivars. Multiple sources of diversity will be required to effectively diversify this gene pool. The objective in this study was to evaluate the genetic diversity and yield of familiess derived from crosses between northern elite (NE) by southern elite (SE) parents. Lines were derived from 10 crosses of NE x SE parents. Molecular markers were used to estimate genetic distance between each line and its SE parent. Yield and agronomic traits were measured in field trials from 1997 to 1999 in six of the crosses. The association of diversity with line yield, expressed relative to yield of the SE parent was determined with regression. On average, the use of NE parents reduced yield, relative to using other SE parents. Some crosses and NE parents were better than others and produced families with yield that exceeded that of their SE parent, indicating that some genes from the NE parents were superior to the genes in the SE parent. At least one line with yield either superior or similar to their SE parent was found in each cross. The finding of positive transgressive segregants in some crosses and the results of the regression analyses indicate that most of the NE parents posses some yield genes that are likely to be superior to those of the SE parents. Our approach to selecting for diversity and yield may be applicable to large introgression programs where diversity from many sources is desired.

Abbreviations: NE, northern elite • SE, southern elite • GD, genetic distance

This article has been cited by other articles:

				Y.-B. Fu, G. W. Peterson, and M. J. Morrison Genetic Diversity of Canadian Soybean Cultivars and Exotic Germplasm Revealed by Simple Sequence Repeat Markers Crop Sci., September 1, 2007; 47(5): 1947 - 1954. [Abstract] [Full Text] [PDF]

				J. Yu and R. Bernardo Changes in Genetic Variance during Advanced Cycle Breeding in Maize Crop Sci., March 1, 2004; 44(2): 405 - 410. [Abstract] [Full Text] [PDF]

				C. H. Sneller Impact of Transgenic Genotypes and Subdivision on Diversity within Elite North American Soybean Germplasm Crop Sci., January 1, 2003; 43(1): 409 - 414. [Abstract] [Full Text] [PDF]