Stem respiration in leafy cuttings of Prosopis juliflora during the rooting process |
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| Authors: | J McP Dick D G Blackburn C McBeath |
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| Institution: | (1) Institute of Terrestrial Ecology, Bush Estate, EH26 OQB Penicuik, Midlothian, Scotland |
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| Abstract: | An oxygen electrode was used to estimate the respiration rate of basal 1 cm sections of Prosopis juliflora cuttings. The respiration rate per unit dry mass decreased linearly with increasing diameter at a rate of 0.42 nmol02g–1s–1mm–1 between the range of 1–3 mm diameter. However, as a result of increased mass, total respiration for the whole 1 cm section of tissue increased linearly with increasing diameter. The average respiration rate of the basal 1 cm of stem tissue, measured 14 days after insertion in the propagator, was almost double that of the 1 cm section of tissue above it (1.01 nmol02g–1s–1 compared to 0.57 nmol02g–1s–1). The value of this technique as an aid to our understanding of the development of adventitious roots is discussed. |
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| Keywords: | rooting cuttings oxygen electrode |
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