Fitness and maternal effects in hybrids formed between transgenic oilseed rape (Brassica napus L.) and wild brown mustard [B. juncea (L.) Czern et Coss.] in the field

Kun Di; C Neal Stewart; Wei Wei; Bao‐cheng Shen; Zhi‐Xi Tang; Ke‐Ping Ma

doi:10.1002/ps.1749

journal article Mar 11, 2009

Fitness and maternal effects in hybrids formed between transgenic oilseed rape (Brassica napus L.) and wild brown mustard [B. juncea (L.) Czern et Coss.] in the field

Kun Di C Neal Stewart Wei Wei

Bao‐cheng Shen Zhi‐Xi Tang Ke‐Ping Ma

Pest Management Science Vol. 65 No. 7 pp. 753-760 · Wiley

View at Publisher Save 10.1002/ps.1749

Abstract

AbstractBACKGROUND: Gene flow between crops and weedy relatives depends on the survivorship and reproduction of early‐generation hybrids in a field environment. The primary aim of this study was to compare the fitness of transgenic crop × wild hybrids with their parental types and a non‐transgenic crop type in the field under enhanced temperature and humidity.RESULTS: Transgenic insect‐resistant oilseed rape (Brassica napus L.), wild brown mustard [B. juncea (L.) Czern et Coss.], their hybrids and non‐transgenic B. napus were grown in such a way as to mimic field conditions after harvest under which volunteer plants might appear in agricultural settings. Factor analysis revealed that vegetative growth characteristics explained most of the observed differences among plant types. Wild brown mustard had the highest fitness during its entire life history. Hybrids had intermediate composite fitness and lowest reproductive fitness. The hybrid and the wild weed shared similar vegetative growth characteristics and seed dormancy in their respective progenies.CONCLUSION: These data indicate that there might be enhanced persistence of the transgene in warmer climates. The absence of fitness cost of the transgenes might allow transgenes to persist in ecosystems. These data will contribute to risk assessments of transgene persistence and weed management against the backdrop of global climate change. Copyright © 2009 Society of Chemical Industry

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References

Details

Published: Mar 11, 2009
Vol/Issue: 65(7)
Pages: 753-760
License: View

Authors

Departments of Human Genetics and Internal Medicine, The University of Michigan Medical School

Cite This Article

Kun Di, C Neal Stewart, Wei Wei, et al. (2009). Fitness and maternal effects in hybrids formed between transgenic oilseed rape (Brassica napus L.) and wild brown mustard [B. juncea (L.) Czern et Coss.] in the field. Pest Management Science, 65(7), 753-760. https://doi.org/10.1002/ps.1749

Fitness and maternal effects in hybrids formed between transgenic oilseed rape (Brassica napus L.) and wild brown mustard [B. juncea (L.) Czern et Coss.] in the field

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