Responses of Three Bromegrass (Bromus) Species to Defoliation under Different Growth Conditions
Bromegrass species are important forage crops in temperate regions of world. This study compared responses of three bromegrass species to defoliation in the greenhouse and field to determine if the former could predict responses in the latter. Experiments were conducted in 2006 and 2007 in Saskatoon...
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | International Journal of Agronomy |
| Online Access: | http://dx.doi.org/10.1155/2010/515807 |
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| author | B. Biligetu Bruce Coulman |
| author_facet | B. Biligetu Bruce Coulman |
| author_sort | B. Biligetu |
| collection | DOAJ |
| description | Bromegrass species are important forage crops in temperate regions of world. This study compared responses of three bromegrass species to defoliation in the greenhouse and field to determine if the former could predict responses in the latter. Experiments were conducted in 2006 and 2007 in Saskatoon (52°07′ N, 106°38′ W), Canada on meadow bromegrass (Bromus riparius Rehm.), smooth bromegrass (Bromus inermis Leyss.), and hybrid bromegrass (B. riparius X B. inermis) following defoliation to 5 cm stubble height. When defoliated at the vegetative stage, above-ground biomass was similar among the three species in the field, but meadow bromegrass produced greater above-ground biomass than smooth bromegrass in the greenhouse. When defoliated at the stem elongation stage, meadow bromegrass produced greater above-ground biomass than smooth bromegrass in both environments. In the field, for all defoliation treatments, tiller number was greatest in meadow bromegrass, intermediate in hybrid bromegrass, and least in smooth bromegrass. In the greenhouse, however, the three species did not differ in tiller number. Similar results were found for below-ground biomass. Thus, testing the effect of defoliation in the greenhouse environment did not accurately predict the effect in the field environment. |
| format | Article |
| id | doaj-art-d3b509d7b68e47c78e2db076b62c70fb |
| institution | Kabale University |
| issn | 1687-8159 1687-8167 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Agronomy |
| spelling | doaj-art-d3b509d7b68e47c78e2db076b62c70fb2025-02-03T01:01:15ZengWileyInternational Journal of Agronomy1687-81591687-81672010-01-01201010.1155/2010/515807515807Responses of Three Bromegrass (Bromus) Species to Defoliation under Different Growth ConditionsB. Biligetu0Bruce Coulman1Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK, S7N 5A8, CanadaDepartment of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK, S7N 5A8, CanadaBromegrass species are important forage crops in temperate regions of world. This study compared responses of three bromegrass species to defoliation in the greenhouse and field to determine if the former could predict responses in the latter. Experiments were conducted in 2006 and 2007 in Saskatoon (52°07′ N, 106°38′ W), Canada on meadow bromegrass (Bromus riparius Rehm.), smooth bromegrass (Bromus inermis Leyss.), and hybrid bromegrass (B. riparius X B. inermis) following defoliation to 5 cm stubble height. When defoliated at the vegetative stage, above-ground biomass was similar among the three species in the field, but meadow bromegrass produced greater above-ground biomass than smooth bromegrass in the greenhouse. When defoliated at the stem elongation stage, meadow bromegrass produced greater above-ground biomass than smooth bromegrass in both environments. In the field, for all defoliation treatments, tiller number was greatest in meadow bromegrass, intermediate in hybrid bromegrass, and least in smooth bromegrass. In the greenhouse, however, the three species did not differ in tiller number. Similar results were found for below-ground biomass. Thus, testing the effect of defoliation in the greenhouse environment did not accurately predict the effect in the field environment.http://dx.doi.org/10.1155/2010/515807 |
| spellingShingle | B. Biligetu Bruce Coulman Responses of Three Bromegrass (Bromus) Species to Defoliation under Different Growth Conditions International Journal of Agronomy |
| title | Responses of Three Bromegrass (Bromus) Species to Defoliation under Different Growth Conditions |
| title_full | Responses of Three Bromegrass (Bromus) Species to Defoliation under Different Growth Conditions |
| title_fullStr | Responses of Three Bromegrass (Bromus) Species to Defoliation under Different Growth Conditions |
| title_full_unstemmed | Responses of Three Bromegrass (Bromus) Species to Defoliation under Different Growth Conditions |
| title_short | Responses of Three Bromegrass (Bromus) Species to Defoliation under Different Growth Conditions |
| title_sort | responses of three bromegrass bromus species to defoliation under different growth conditions |
| url | http://dx.doi.org/10.1155/2010/515807 |
| work_keys_str_mv | AT bbiligetu responsesofthreebromegrassbromusspeciestodefoliationunderdifferentgrowthconditions AT brucecoulman responsesofthreebromegrassbromusspeciestodefoliationunderdifferentgrowthconditions |