Full TGIF Record # 210090
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DOI:10.1111/j.1744-697X.2012.00246.x
Web URL(s):http://onlinelibrary.wiley.com/doi/10.1111/j.1744-697X.2012.00246.x/full
    Last checked: 08/21/2012
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http://onlinelibrary.wiley.com/doi/10.1111/j.1744-697X.2012.00246.x/pdf
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Publication Type:
i
Report
Author(s):Kiyoshi, Takako; Arakawa, Akira; Uchiyama, Kazuhiro; Fujimori, Masahiro; Mizuno, Kazuhiko; Cai, Hongwei
Author Affiliation:Kiyoshi, Arakawa, Uchiyama, and Mizuno: National Agriculture and Food Research Organization (NARO), Institute of Livestock and Grassland Science, Nasushiobara, Tochigi, Japan; Fujimori: National Agriculture and Food Research Organization (NARO), Tohoku Agricultural Research Center, Morioka, Iwate, Japan; Cai: Forage Crop Research Institute, Japan Grassland Agriculture and Forage Seed Association, Nasushiobara, Tochigi, Japan
Title:Exceptionally high fertility observed in three F1 hybrids between Lolium multiflorum Lam. and L. temulentum L.
Section:Original articles
Other records with the "Original articles" Section
Source:Grassland Science. Vol. 58, No. 2, June 2012, p. 66-72.
# of Pages:7
Publishing Information:Oxford, England: Blackwell Pub.
Related Web URL:http://onlinelibrary.wiley.com/doi/10.1111/j.1744-697X.2012.00246.x/abstract
    Last checked: 08/21/2012
    Notes: Abstract only
Keywords:TIC Keywords: Cultivar evaluation; Cultivar variation; Fertility; Lolium multiflorum; Lolium temulentum; Lolium x hybridum; Pollen analysis; Temperature response
Abstract/Contents:"The pollen fertility and seed set of three F1 hybrid plants derived from a cross between a darnel ryegrass (Lolium temulentum L.) line (Ba3081) and a genotype of Italian ryegrass (L. multiflorum Lam.) were evaluated in field and greenhouse experiments under different temperatures. In the field where the daily mean temperature for 3 weeks prior to pollen dispersal was 16.5°C, the mean pollen fertility of the F1 plants was 42.8%, which was lower than the value observed in the parental species (96.0-98.1%). In two greenhouses with a daily mean temperature of 20.4 and 15.8°C, the mean pollen fertility of the F1 plants was 53.1% and 44.0%, respectively, which were higher than the values reported previously for the hybrids between L. temulentum x L. multiflorum (maximum of about 20%). The seed set of the F1 plants was 24% under open-pollinated conditions in the field compared with 4.2-8.8% under self-pollinated conditions in the two greenhouses. These results indicated that the F1 plants were self-fertile and able to set F2 seed, with a significant reduction in pollen fertility occurring with a decrease in the daily mean temperature (2.15% decrease in fertility per unit decrease in temperature). The germination rate of the F2 seeds was approximately 57%, indicating the possibility of producing an F2 population for future genetic analysis. This is the first report of F1 plants from L. temulentum x L. multiflorum with fertile pollen and with the ability to produce progeny by self-pollination. These findings suggest a possibility of developing recombinant inbred lines between L. temulentum and L. multiflorum."
Language:English
References:18
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kiyoshi, T., A. Arakawa, K. Uchiyama, M. Fujimori, K. Mizuno, and H. Cai. 2012. Exceptionally high fertility observed in three F1 hybrids between Lolium multiflorum Lam. and L. temulentum L.. Grassland Science. 58(2):p. 66-72.
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DOI: 10.1111/j.1744-697X.2012.00246.x
Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1111/j.1744-697X.2012.00246.x/full
    Last checked: 08/21/2012
    Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1111/j.1744-697X.2012.00246.x/pdf
    Last checked: 08/21/2012
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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MSU catalog number: b4979016~S1a
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