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| Author(s): | Langkamp, P. J.;
Farnell, G. K.;
Dalling, M. J. |
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| Author Affiliation: | Sch. of Agric. and Forestry, Melbourne Univ., Parkville, Vic., Australia 3052 |
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| Title: | Acetylene reduction rates by selected leguminous and non-leguminous plants of Groote Eylandt, Northern Territory |
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| Source: | Australian Journal of Botany. Vol. 29, No. 1, 1981, p. 1-9. |
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| Keywords: | TIC Keywords: Territory; Imperata cylindrica; Paspalum vaginatum; Nitrogen fixation
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| Geographic Terms: | Australia, Northern Territory |
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| Abstract/Contents: | Acetylene reduction associated with the roots of various grasses and sedges and by nodules of selected legumes was investigated in a Eucalyptus tetrodonta open-forest and a Melaleuca leucadendron open-forest swamp complex. High rates of non-legume C2H2 reduction, as measured by excised root assay, were associated only with plants found in the swamp complex, with Imperata cylindrica and Paspalum vaginatum producing 161 plus or minus 69 and 23 plus or minus 15 nmol C2H2/g DM h, resp. There was an initial lag period of 8 h before C2H2 reduction was detected which was not eliminated or reduced by the addition of sucrose. Nearly all the C2H2 reduction activity was associated with the roots. The addition of inorganic N or aspartic or citric acids stopped the reduction of C2H2, but addition of sucrose stimulated it. Current potential photosynthesis appeared to be related to C2H2 reduction ability. C2H2 reduction activity by rooted nodules of various leguminous spp. was seasonal, being greatest in the wet season. |
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| Language: | English |
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| References: | 21 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Langkamp, P. J., G. K. Farnell, and M. J. Dalling. 1981. Acetylene reduction rates by selected leguminous and non-leguminous plants of Groote Eylandt, Northern Territory. Australian Journal of Botany. 29(1):p. 1-9. |
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