EurekaMag.com logo
+ Site Statistics
References:
53,623,987
Abstracts:
29,492,080
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Genetic effects associated with reciprocal recurrent selection in BSSS and BSCB1 maize populations



Genetic effects associated with reciprocal recurrent selection in BSSS and BSCB1 maize populations



Crop Science 33(1): 78-82



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 evaulate the effects of genetic drift. A population diallel of the CO, C4, C7, C9, and C11 cycles of BSSS(R) and BSCB1(R) and the C8 and C10 interpopulation crosses of BSSS(R) and BSCB1(R) were evaluated. The populations per se selfed and interpopulation crosses selfed of the C0, C4, C7, C8, C9, C10, C11 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. Improvement in BSSS(R) was due to both additive and dominance effects, but only dominance effects were important in BSCB1(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 RRS was effective for improving the interpopulation cross and inbreeding depression from genetic drift limited the observed response in the populations per se.

(PDF 0-2 workdays service: $29.90)

Accession: 002390796

Download citation: RISBibTeXText



Related references

Molecular genetic diversity after reciprocal recurrent selection in BSSS and BSCB1 maize populations. Crop Science 37(2): 416-423, 1997

Interpopulation genetic variance after reciprocal recurrent selection in BSSS and BSCB1 maize populations. Crop Science 33(1): 90-95, 1993

Reciprocal recurrent selection in the BSSS and BSCB1 maize populations and half-sib selection in BSSS. Crop Science 13(4): 451-456, 1973

Seven cycles of reciprocal recurrent selection in BSSS and BSCB1 maize populations. Crop Science 20(5): 599-603, 1980

Responses to reciprocal recurrent selection in BSSS and BSCB1 maize populations. Crop Science 33(1): 73-77, 1993

Hybrid improvement after reciprocal recurrent selection in BSSS and BSCB1 maize populations. Maydica 41(1): 25-33, 1996

Comparison of effects of reciprocal recurrent selection in the BSSS(R), BSCB1(R) and BS6 populations. Maydica 29(1): 1-8, 1984

Reciprocal recurrent selection in the BSSS and BSCB1 maize varieties. Agronomy Abstracts: 6, 1972

Evaluation of recurrent selection in BSSS, BSCB1, and BS13 maize populations. Crop Science 23(1): 35-40, 1983

Evaluation of recurrent selection in BSSS, BSCB1, and BS13 maize populations Cross diallel, inbreeding. Crop science 23(1): 35-40, 1983

Change in ribosomal DNA intergenic spacer-length composition in maize recurrent selection populations. 1. Analysis of BS13, BSSS, and BSCB1. Tag. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik 88(5): 541-547, 1994

Molecular genetic diversity among progenitors and derived elite lines of BSSS and BSCB1 maize populations. Crop science 43(2): 474-482, 2003

Reciprocal recurrent selection effects on the genetic structure of tropical maize populations assessed at microsatellite loci. Genetics and Molecular Biology 26(3): 355-364, 2003