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| Web URL(s): | http://www.nrcresearchpress.com/doi/pdf/10.1139/b95-033
Last checked: 09/29/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Taylor, J. S.;
Robertson, J. M.;
Harker, K. N.;
Bhalla, M. K.;
Daly, E. J.;
Pearce, D. W. |
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| Author Affiliation: | Taylor, Robertson, Harker, Bhalla, Daly - Agriculture Canada Research Station, Bag Service 5000, Lacombe, AB TOC 1SO, Canada. Pearce - Department of Biological Sciences, The University of Calgary, Calgary, AB T2N 1N4, Canada. |
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| Title: | Apical dominance in rhizomes of quackgrass, Elytrigia repens: the effect of auxin, cytokinins, and abscisic acid |
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| Source: | Canadian Journal of Botany. Vol. 73, No. 2, February 1995, p. 307-314. |
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| Publishing Information: | Vancouver, British Columbia: The National Research Council of Canada. |
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| # of Pages: | 8 |
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| Related Web URL: | http://www.nrcresearchpress.com/doi/abs/10.1139/b95-033
Last checked: 09/29/2015
Notes: English abstract only |
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| Keywords: | TIC Keywords: Elymus repens; Auxins; Dormancy; Abscisic acid; Apical dominance; Cytokinins
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| Abstract/Contents: | "Experiments were designed to determine the impact of abscisic acid, indole-3-acetic acid, and cytokinins on dormancy of quckgrass (elytigia repens (L.) Nevski) rhizome axillary buds using exogenous hormone treatments and analysis of endogenous hormones. Exogenous hormone treatments were applied in solution or in lanolin paste to 5-node segments of rhizome with an apical tip intact or removed. Abscisic acid inhibited bud growth except at concentrations of 0.5 - 1 ug x mL -1 when it stimulated growth: this appeared to be based on an inhibition of apical dominance rather than a stimulation of bud growth per se. Both indole-3-acetic acid and cytokinins stimulated bud growth, indole-3-acetic acid at concentrations of 0.5 - 5 ug x mL -1 and cytokinins at higher concentrations (i.e., 10 - 100 ug x mL -1). Indole-3-acetic acid also increased elongation of the buds, whereas abscisic acid and cytokinins did not. Levels of endogenous hormones were measured in bud samples: indole-3-acetic acid was quantified as its methyl ester by combined gas chromatography - mass spectrometry - selected ion monitoring; abscisic acid was quantified as its methyl ester by gas chromatography - electron capture; and cytokinins were quantified using a soybean callus bioassay. Hormone levels were generally higher in the most active buds of a 5-node section. Abscisic acid was also measured in buds 24 h after sheath leaf removal, a practice known to promote bud sprouting. Sheath leaf removal had no significant effect on abscisic acid levels." |
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| Language: | English |
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| References: | 27 |
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| See Also: | Other items relating to: Biostimulants |
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| Note: | Abstract also appears in French
Figures
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Taylor, J. S., J. M. Robertson, K. N. Harker, M. K. Bhalla, E. J. Daly, and D. W. Pearce. 1995. Apical dominance in rhizomes of quackgrass, Elytrigia repens: the effect of auxin, cytokinins, and abscisic acid. Can. J. Bot. 73(2):p. 307-314. |
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| Web URL(s):
http://www.nrcresearchpress.com/doi/pdf/10.1139/b95-033
Last checked: 09/29/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: QK 1 .C3 |
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