Vegetative propagation of Cordia alliodora (Ruiz and Pavon) Oken: The effects of IBA concentration, propagation medium and cutting origin

Authors: Mesén, F., Newton, A.C. and Leakey, R.R.B.

Journal: Forest Ecology and Management

Volume: 92

Issue: 1-3

Pages: 45-54

ISSN: 0378-1127

DOI: 10.1016/S0378-1127(96)03960-6

Abstract:

The effects of different concentrations of IBA, rooting media and cutting origins on the rooting of leafy stem cuttings of Cordia alliodora (Ruiz and Payon) Oken were investigated in three experiments using non-mist propagators. During the rooting period, changes in dry mass, photosynthetic rate, stomatal conductance and relative water content (RWC) of the cuttings were assessed. In Experiment 1, cuttings treated with 1.6% IBA achieved 70% rooting after 9 weeks. Bud growth in cuttings was inhibited by increasing concentrations of IBA, which were associated with higher final rooting percentages. No significant treatment differences in RWC or dry mass were found between IBA concentrations, although the dry mass of cuttings in all treatments tended to increase during the rooting period. In Experiment 2, higher rooting percentages were retarded in gravel (89%) and sand (88%) than in sawdust (76%). Although the water content of sawdust was relatively high, cuttings in this treatment displayed significantly lower stomatal conductances (g(s)), which may be attributed to death of stem tissue resulting from anoxia. In Experiment 3, highly significant differences (P <0.01) were recorded between node positions with respect to rooting percentage, values ranging from 21.3% for Node 2 to 46.3% for Node 5 (basal). Cuttings actively photosynthesized during the rooting period, with photosynthetic rates (P0) of 0.68-6.70 μmol CO2 m-2 s-1 recorded. However, no clear relationship between P0 and rooting ability was apparent. Contrary to previous studies with this species, it was concuded that C. alliodora cuttings may be rooted relatively easily using the propagation system described. However, the close relationships recorded between P0, irradiance and leaf-air vapour pressure deficit (VPD) suggest that propagator microclimate should be carefully managed if optimal rooting percentages are to be achieved.

Source: Scopus

Vegetative propagation of Cordia alliodora (Ruiz & Pavon) Oken: The effects of IBA concentration, propagation medium and cutting origin

Authors: Mesen, F., Newton, A.C. and Leakey, R.R.B.

Journal: FOREST ECOLOGY AND MANAGEMENT

Volume: 92

Issue: 1-3

Pages: 45-54

eISSN: 1872-7042

ISSN: 0378-1127

DOI: 10.1016/S0378-1127(96)03960-6

Source: Web of Science (Lite)

Vegetative propagation of Cordia alliodora (Ruiz & Pavon) Oken: the effects of IBA concentration, propagation medium and cutting origin.

Authors: Mesen, J.F., Newton, A. and Leakey, R.R.B.

Journal: Forest Ecology and Management

Volume: 92

Pages: 45-54

ISSN: 0378-1127

DOI: 10.1016/S0378-1127(96)03960-6

Abstract:

The effects of different concentrations of IBA, rooting media and cutting origins on the rooting of leafy stem cuttings of Cordia alliodora (Ruiz & Pavon) Oken were investigated in three experiments using non-mist propagators. During the rooting period, changes in dry mass, photosynthetic rate, stomatal conductance and relative water content (RWC) of the cuttings were assessed. In Experiment 1, cuttings treated with 1.6% IBA achieved 70% rooting after 9 weeks. Bud growth in cuttings was inhibited by increasing concentrations of IBA, which were associated with higher final rooting percentages. No significant treatment differences in RWC or dry mass were found between IBA concentrations, although the dry mass of cuttings in all treatments tended to increase during the rooting period. In Experiment 2, higher rooting percentages were recorded in gravel (89%) and sand (88%) than in sawdust (76%). Although the water content of sawdust was relatively high, cuttings in this treatment displayed significantly lower stomatal conductances (gs), which may be attributed to death of stem tissue resulting from anoxia. In Experiment 3, highly significant differences (P < 0.01) were recorded between node positions with respect to rooting percentage, values ranging from 21.3% for Node 2 to 46.3% for Node 5 (basal). Cuttings actively photosynthesized during the rooting period, with photosynthetic rates (Pn) of 0.68–6.70 μmol CO2 m−2 s−1 recorded. However, no clear relationship between Pn and rooting ability was apparent. Contrary to previous studies with this species, it was concuded that C. alliodora cuttings may be rooted relatively easily using the propagation system described. However, the close relationships recorded between Pn, irradiance and leaf-air vapour pressure deficit (VPD) suggest that propagator microclimate should be carefully managed if optimal rooting percentages are to be achieved.

Source: Manual

Preferred by: Adrian Newton