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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1987_vol41.pdf#page=100
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Taylorson, R. B. |
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| Author Affiliation: | Plant Physiologist, U.S. Dept. of Agric., Agric. Research Service, Beltsville, MD. |
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| Title: | High Temperature Transition in Barnyardgrass (Echinochloa Crus-galli (L.) Beauv.) Seed Dormancy |
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| Meeting Info.: | Held: January 6-8, 1987, Williamsburg, VA. |
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| Source: | Proceedings of the 1987 Annual Meeting of the Northeastern Weed Science Society. Vol. 41, 1987, p. 100. |
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| Publishing Information: | Ithaca, N. Y. : Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Temperatures; Echinochloa crusgalli; Seed dormancy; Light
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| Abstract/Contents: | "Imbibed barnyardgrass seeds held in darkness at 30 to 40 C for about 8 days require a brief exposure to light to relieve dormancy when subsequently germinated at a 20/30 C alternating temperature. Holding imbibed seeds at > 42 C for approximately 4 days, however, allows about half the seeds to germinate in darkness and only about 10 percent more respond to a light stimulus. The high temperature treatment need not be continuous, since most of the effect can be induced by periods of approximately 2 hours at 46 C. It is proposed that the high temperatures cause a transition from a light-requiring to a non-light requiring form of dormancy. The finding has considerable relevance to field behavior where temperatures near the soil surface often reach 45 to 50 C and thereby could initiate germination of buried barnyardgrass seeds in the absence of a light stimulus. Without the high temperature, the seeds would require a light stimulus for germination." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Taylorson, R. B. 1987. High Temperature Transition in Barnyardgrass (Echinochloa Crus-galli (L.) Beauv.) Seed Dormancy. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 41:p. 100. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1987_vol41.pdf#page=100
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: SB 610 .N62 |
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