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 Keeratinijakal, V. Articles by Lamkey, K. R. Search for Related Content PubMed Articles by Keeratinijakal, V. Articles by Lamkey, K. R. Agricola Articles by Keeratinijakal, V. Articles by Lamkey, K. R.

Genetic Effects Associated with Reciprocal Recurrent Selection in BSSS and BSCB1 Maize Populations

Kasesart Univ., Faculty of Agric., Dep. of Agronomy, Bangkhen, Bangkok 10903, Thailand
USDA-ARS, Dep. of Agronomy, Iowa State Univ., Ames IA 50011.

^* Corresponding author.

Reciprocal recurrent selection (RRS) was designed to capitalize on both additive and nonadditive genetic effects for improvement of the cross between two populations by complementary changes in allelic frequencies between populations. Eleven cycles of RRS have been completed in the Iowa Stiff Stalk Synthetic (BSSS) and Iowa Corn Borer Synthetic No. 1 (BSCB1) maize (Zea mays L.) populations. The objectives of this study were to partition the response to selection into that due to additive and dominance genetic effects and to evaluate the effects of genetic drift. A population diallel of the CO, C4, C7, C9, and Cll cycles of BSSS(R) and BSCB1(R) the C8 and C10 inte rpopulation crosses of BSSS(R) and BSCB1(R) were evaluated. The populations per se selfed and interpopulation crosses selfed of the CO, C4, C7, C8, C9, CI0, Cll cycles also were included in the study. The study was evaluated at four locations in 1988 and three locations in 1989. The response of the interpopulation cross for grain yield was 0.28 ± 0.04 Mg ha^-1 cycle^-1 and was primarily due to dominance effects. Responses in the populations per se, adjusted for the effects of genetic drift, were similar to the direct effects in the interpopulation cross. Improvementin BSSS(R) was due to both additive and dominance effects, but only dominance ffects were important in BSCBI(R). The results showed that selection response occurred at loci with alleles with partial to complete dominance with no evidence for overdominant alleles contributing to selection response. There were no significant changes in grain moisture, and the responses for root and stalk lodging were in the desired direction. It is concluded that RPS was effective for improving the interpopulation cross and inbreeding depression from genetic drift limited the observed response in the populations per se.

Received for publication March 19, 1992.

This article has been cited by other articles:

				D. V. Butruille, H. D. Silva, S. M. Kaeppler, and J. G. Coors Response to Selection and Genetic Drift in Three Populations Derived from the Golden Glow Maize Population Crop Sci., September 1, 2004; 44(5): 1527 - 1534. [Abstract] [Full Text] [PDF]

				J. W. Edwards and K. R. Lamkey Dominance and Genetic Drift: Predicted Effects of Population Subdivision in a Maize Population Crop Sci., November 1, 2003; 43(6): 2006 - 2017. [Abstract] [Full Text] [PDF]

				S. Hagdorn, K. R. Lamkey, M. Frisch, P. E. O. Guimaraes, and A. E. Melchinger Molecular Genetic Diversity among Progenitors and Derived Elite Lines of BSSS and BSCB1 Maize Populations Crop Sci., March 1, 2003; 43(2): 474 - 482. [Abstract] [Full Text] [PDF]

				P. S. Guzman and K. R. Lamkey Effective Population Size and Genetic Variability in the BS11 Maize Population Crop Sci., March 1, 2000; 40(2): 338 - 346. [Abstract] [Full Text]