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| Web URL(s): | http://www.bioone.org/bioone/?request=get-document&issn=0043-1745&volume=048&issue=05&page=0588
Last checked: 11/2005
Access conditions: Item is within a limited access website |
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| Publication Type:
| Refereed |
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| Author(s): | Snyder, Jeremy R.;
Mallory-Smith, Carol A.;
Balter, Sara;
Hansen, Jennifer L.;
Zemetra, Robert S. |
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| Author Affiliation: | Snyder: and Mallory-Smith: Corresponding author, Department of Crop and Soil Science, Oregon State University, Corvallis, OR; Balter, Hansen and Zemetra: Department of Plant, Soil and Entomological Sciences, University of Idaho, Moscow, ID |
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| Title: | Seed production on Triticum aestivum by Aegilops cylindrica hybrids in the field |
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| Section: | Weed biology and ecology
Other records with the "Weed biology and ecology" Section
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| Source: | Weed Science. Vol. 48, No. 5, September/October 2000, p. 588-593. |
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| Publishing Information: | Champaign, IL: Weed Science Society of America |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Seed production; Triticum aestivum; Aegilops cylindrica; Hybrids; Backcrossing; Seed viability; Germination; Breeding; Morphology
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| Abstract/Contents: | "Field experiments were conducted to determine if seeds would be produced on Triticum aestivum by Aegilops cylindrica hybrids in the field and, if it were, to determine the viability of the seeds produced. One, five, or 10 hybrids were planted into varying proportions of A. cylindrica and T. aestivum in a replacement series design. Percent seed set ranged from 0 to 5.5% in 1996 and from 0 to 9.2% in 1997. Seeds were set in all treatments. The average seed set was 2.3% in 1996 and 3.8% in 1997. No differences in seed set were found among treatments. The seeds produced were separated according to seed condition, either full or shriveled, and tested for germination. The germination of the seeds produced on the hybrids was not significantly different between years. The average germination for full seeds was 94% in both years and 79 and 84% for shriveled seeds in 1995 and 1996, respectively. Greenhouse studies were conducted to evaluate the rate of self-fertility of the BCâ generation and to identify morphological characteristics that could be used to identify the probable pollen donor parent and to predict the occurrence of seed set. In 1997 4.1% and in 1998 2.1% of BCâ plants set seeds. The average seed set was 0.3% in 1997 and 0.06% in 1998. It was not possible, using any morphological characteristic measured, to determine the identity of the parent serving as the pollen donor in the previous generation or to predict the occurrence of seed set in the BCâ generation. This is the first reported study to show that hybrids between T. aestivum and A. cylindrica have the ability, although limited, to backcross under field conditions and set seeds. Furthermore, the seeds produced are viable and will germinate and produce plants. With the millions of hectares of T. aestivum infested with A. cylindrica, even the limited ability to backcross is of concern for the movement of a herbicide-resistance gene." |
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| Language: | English |
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| References: | 16 |
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| Note: | Pictures, b/w
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Snyder, J. R., C. A. Mallory-Smith, S. Balter, J. L Hansen, and R. S. Zemetra. 2000. Seed production on Triticum aestivum by Aegilops cylindrica hybrids in the field. Weed Sci. 48(5):p. 588-593. |
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| Web URL(s):
http://www.bioone.org/bioone/?request=get-document&issn=0043-1745&volume=048&issue=05&page=0588
Last checked: 11/2005
Access conditions: Item is within a limited access website |
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MSU catalog number: SB 610 .W38 |
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