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| DOI: | 10.1111/j.1744-697X.2012.00246.x |
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| 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
Last checked: 08/21/2012
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| Publication Type:
| Report |
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| Author(s): | Kiyoshi, Takako;
Arakawa, Akira;
Uchiyama, Kazuhiro;
Fujimori, Masahiro;
Mizuno, Kazuhiko;
Cai, Hongwei |
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| 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 |
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| Title: | Exceptionally high fertility observed in three F1 hybrids between Lolium multiflorum Lam. and L. temulentum L. |
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| Section: | Original articles
Other records with the "Original articles" Section
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| Source: | Grassland Science. Vol. 58, No. 2, June 2012, p. 66-72. |
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| Publishing Information: | Oxford, England: Blackwell Pub. |
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| # of Pages: | 7 |
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| 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 |
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| Keywords: | TIC Keywords: Cultivar evaluation; Cultivar variation; Fertility; Lolium multiflorum; Lolium temulentum; Lolium x hybridum; Pollen analysis; Temperature response
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| 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." |
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| Language: | English |
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| References: | 18 |
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| Note: | Pictures, color
Figures
Tables
Graphs |
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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 |
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