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 (1) Citing Articles via Google Scholar Google Scholar Articles by St. Martin, S. K. Articles by Geraldi, I. O. Search for Related Content PubMed Articles by St. Martin, S. K. Articles by Geraldi, I. O. Agricola Articles by St. Martin, S. K. Articles by Geraldi, I. O. Related Collections Crop Genetics

CROP BREEDING, GENETICS & CYTOLOGY

Comparison of Three Procedures for Early Generation Testing of Soybean

^a Dep. of Horticulture and Crop Science, Ohio Agric. Res. and Dev. Ctr., The Ohio State Univ., Columbus, OH 43210-1086
^b Dep. of Genetics, Escola Superior de Agricultura "Luiz de Queiroz," Univ. of São Paulo, Caixa Postal 83, 13.400-970, Piracicaba, São Paulo, Brazil

* Corresponding author (stmartin+{at}osu.edu)

Early generation testing as a breeding procedure for autogamous crops consists of testing heterogeneous families, followed by selection of homozygous lines from superior families. Although early generation testing has been compared with other breeding methods, there have been few comparisons of different early generation testing procedures. Our objective was to assess the effectiveness of testing F₁-, F₂-, and F₃-derived families in soybean [Glycine max (L.) Merr.]. We applied the three procedures to two soybean populations from 1986 to 1993. Selected lines (F₃-, F₄-, and F₅-derived, respectively) were obtained by applying each testing method to each population. Divided into maturity classes, these selected lines were compared with unselected lines of the same generation, population, and maturity to determine genetic gain. The three early generation treatments produced similar genetic gains in seed yield, averaging approximately 4%. Selection of F₁-derived families for yield increased plant height and lodging, but the other two selection procedures were satisfactory in this respect. To maximize genetic gain for yield while avoiding undesirable changes in lodging in an early-generation testing program, we recommend testing F₂-derived families, unless off-season nurseries permit development of F₃-derived families without further loss of time.

This article has been cited by other articles:

				F. K. Padi and J. D. Ehlers Effectiveness of Early Generation Selection in Cowpea for Grain Yield and Agronomic Characteristics in Semiarid West Africa Crop Sci., March 19, 2008; 48(2): 533 - 540. [Abstract] [Full Text] [PDF]

				D. G. Jones and C. W. Smith Early Generation Testing in Upland Cotton Crop Sci., December 2, 2005; 46(1): 1 - 5. [Abstract] [Full Text] [PDF]

				R. Bernardo On the effectiveness of early generation selection in self-pollinated crops Crop Sci., July 1, 2003; 43(4): 1558 - 1560. [Abstract] [Full Text] [PDF]