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| Web URL(s): | http://onlinelibrary.wiley.com/doi/10.1111/j.1744-7348.1983.tb02752.x/abstract
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http://onlinelibrary.wiley.com/doi/10.1111/j.1744-7348.1983.tb02752.x/epdf
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| Publication Type:
| Refereed |
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| Author(s): | Williams, E. D. |
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| Author Affiliation: | Agricultural Research Council Weed Research Organization, Begbroke Hill, Yarnton, Oxford |
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| Title: | Effects of temperature, light, nitrate and pre-chilling on seed germination of grassland plants |
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| Source: | Annals of Applied Biology. Vol. 103, No. 1, August 1983, p. 161-172. |
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| # of Pages: | 12 |
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| Keywords: | TIC Keywords: Germination; Environment; Grasses; Temperatures; Lolium perenne; Cynosurus cristatus; Anthoxanthum odoratum; Festuca rubra subsp. rubra; Holcus lanatus; Poa trivialis; Agrostis tenuis; Deschampsia cespitosa; Poa annua; Seed germination
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| Abstract/Contents: | Effects of factorial combinations of alternating (20/10 deg C) and constant temp. (20 deg ), of light (intermittent) and dark, and of distilled water and nitrate on the germination of several spp. of indigenous grassland were investigated in 1979 and in 1980 when the effects of pre-chilling were also studied. Spp. differed greatly in their response to the 8 sets of environmental conditions in 1979. With the exception of Lolium perenne subsp. perenne and Cynosurus cristatus, only a small percentage of seeds of most spp. was able to germinate in constant temp. in the dark. When light was supplied there was moderate germination of Anthoxanthum odoratum, Cerastium fontanum subsp. glabrescens, Festuca rubra, Holcus lanatus and Poa trivialis. Alternating temp. greatly increased the germination of most spp. and nitrate further increased germination of Agrostis capillaris, Deschampsia cespitosa, H. lanatus, Poa annua and P. trivialis. In alternating temp. light increased germination of these spp. even more than did nitrate. A. capillaris, D. cespitosa and annua required all 3 factors for max. germination and another 7% of seeds of A. capillaris also required GA. Germination responses following sequential application of factors often differed from those resulting from simultaneous treatment: in particular, the germination of Ranunculus spp was greatly enhanced. Although seeds of the spp. tested in 1980 were more germinable than those of the same spp. in 1979, they responded similarly to the different factors. Light increased the germination of both Taraxacum officinale and Plantago lanceolata in constant but not in alternating temp., while nitrate was much more stimulatory to the latter sp. About half the seeds of P. lanceolata were dormant. Pre-chilling at 4 deg for 7 days increased subsequent germination of all spp. when followed by constant temp., except of A. capillaris in the dark and C. cristatus (already max.) in the light. When followed by alternating temp. in the dark, pre-chilling greatly decreased germination of A. capillaris. In the light, where germination of most spp. was max., there was little effect of pre-chilling Longer durations (21 and 42 days) of chilling of older seed gave similar results to the 7 day pre-chilling. |
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| Language: | English |
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| References: | 38 |
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| See Also: | Other items relating to: PREGRM |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Williams, E. D. 1983. Effects of temperature, light, nitrate and pre-chilling on seed germination of grassland plants. Ann. Appl. Biol. 103(1):p. 161-172. |
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| Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1111/j.1744-7348.1983.tb02752.x/abstract
Last checked: 09/25/2015
Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1111/j.1744-7348.1983.tb02752.x/epdf
Last checked: 09/25/2015
Requires: PDF Reader
Access conditions: Item is within a limited access website |
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MSU catalog number: QH 301 .A48 |
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