Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-08T02:53:09.806Z Has data issue: false hasContentIssue false
  • English
  • Français

Nonhybrid Progeny from Crosses of Dioecious Amaranths: Implications for Gene-Flow Research

Published online by Cambridge University Press:  20 January 2017

Federico Trucco ,
Danman Zheng ,
Andrew J. Woodyard ,
Jared R. Walter ,
Tatiana C. Tatum ,
A. Lane Rayburn  and
Patrick J. Tranel
Federico Trucco*
Affiliation:
Instituto de Agrobiotecnología Rosario S.A., Córdoba 1452 P3 Of. E, Rosario, Argentina
Danman Zheng
Affiliation:
Department of Crop Sciences, University of Illinois, Urbana, IL 61801
Andrew J. Woodyard
Affiliation:
Department of Crop Sciences, University of Illinois, Urbana, IL 61801
Jared R. Walter
Affiliation:
Department of Crop Sciences, University of Illinois, Urbana, IL 61801
Tatiana C. Tatum
Affiliation:
Department of Crop Sciences, University of Illinois, Urbana, IL 61801
A. Lane Rayburn
Affiliation:
Department of Crop Sciences, University of Illinois, Urbana, IL 61801
Patrick J. Tranel
Affiliation:
Department of Crop Sciences, University of Illinois, Urbana, IL 61801
*
Corresponding author's E-mail: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

Large proportions of nonhybrid progeny result from controlled crosses between Palmer amaranth and common waterhemp, both dioecious weeds. Agamospermy was proposed as an explanation for this phenomenon, and here we provide evidence in support of this hypothesis. We evaluated 60 nonhybrid offspring from two interspecific crosses, and all plants were females and had DNA content values similar to the female (Palmer amaranth) parent. Among nine hybrids resulting from these crosses, eight were nonviable (lethal or neuter), and only one hybrid allowed for continued gene movement. Cytogenetic evaluation of this hybrid revealed triploidy, further supporting the occurrence of unreduced gametes in these species. In light of this new evidence, we examine earlier data regarding Palmer amaranth by common waterhemp hybridization and suggest some prior conclusions may be premature.

Keywords

Palmer amaranth, Amaranthus palmeri S. Wats. AMAPAcommon waterhemp, Amaranthus tuberculatus (Moq.) Sauer var. rudis (Sauer) Costea & Tardif AMATAAmaranthus rudisagamospermyrestitution gametestriploidy
Type
Research Article
Information
Weed Science , Volume 55 , Issue 2 , April 2007 , pp. 119 - 122
Copyright
Copyright © Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

Culpepper, A. S., Grey, T. L., Vencill, W. K., Kichler, J. M., Webster, T. M., Brown, S. M., York, A. C., Davis, J. W., and Hanna, W. W. 2006. Glyphosate-resistant Palmer amaranth (Amaranthus palmeri) confirmed in Georgia. Weed Sci. 54:620–626.Google Scholar
Franssen, A. S., Skinner, D. Z., Al-Khatib, K., Horak, M. J., and Kulakow, P. A. 2001. Interspecific hybridization and gene flow of ALS resistance in Amaranthus species. Weed Sci. 49:598–606.Google Scholar
Murray, M. J. 1940. The genetics of sex determination in the family Amaranthaceae . Genetics. 25:409–431.Google Scholar
Rayburn, A. L., McCloskey, R., Tatum, T. C., Jeschke, M. R., and Tranel, P. J. 2005. Genome size analysis of weedy Amaranthus species. Crop Sci. 45:2557–2562.Google Scholar
Steinau, A. N., Skinner, D. Z., and Steinau, M. 2003. Mechanism of extreme genetic recombination in weedy Amaranthus hybrids. Weed Sci. 51:696–701.Google Scholar
Tatum, T. C., Skirvin, R., Tranel, P. J., Norton, M., and Rayburn, A. L. 2005. In vitro root induction in weedy Amaranthus species to obtain mitotic chromosomes. In Vitro Cell. Dev. Biol. Plant. 41:844–847.Google Scholar
Trucco, F., Jeschke, M. R., Rayburn, A. L., and Tranel, P. J. 2005a. Promiscuity in weedy amaranths: high frequency of female tall waterhemp (Amaranthus tuberculatus) × smooth pigweed (A. hybridus) hybridization under field conditions. Weed Sci. 53:46–54.Google Scholar
Trucco, F., Tatum, T., Rayburn, A. L., and Tranel, P. J. 2005b. Fertility, segregation at a herbicide-resistance locus, and genome structure in BC1 hybrids from two important weedy Amaranthus species. Mol. Ecol. 14:2717–2728.Google Scholar
Wassom, J. J. and Tranel, P. J. 2005. Amplified fragment length polymorphism–based genetic relationships among weedy Amaranthus species. J. Heredity. 96:410–416.Google Scholar
Wetzel, D. K., Horak, M. J., and Skinner, D. Z. 1999a. Use of PCR-based molecular markers to identify weedy Amaranthus species. Weed Sci. 47:518–523.Google Scholar
Wetzel, D. K., Horak, M. J., Skinner, D. Z., and Kulakow, P. A. 1999b. Transferal of herbicide resistance traits from Amaranthus palmeri to Amaranthus tuberculatus . Weed Sci. 47:538–543.CrossRefGoogle Scholar