Production of Eucalyptus Cloeziana cuttings in response to stock plant temperature

McMahon T. V., . and Trueman S. J., . and Bristow M., . Production of Eucalyptus Cloeziana cuttings in response to stock plant temperature. pp. 60-69. ISSN 0128-1283

Propagation of tropical and subtropical eucalypts is often limited by reduced production of rooted cuttings in winter. We assessed whether changing the temperature of stock plants of Eucalyptus cloeziana from 28/23 (day/night) to 18/13 23/18 or 33/28 C affected the production nutrient concentrations and percentages of cuttings that subsequently formed roots. Lowering the temperature to 18/13 or 23/18 C greatly reduced the number of cuttings harvested from stock plants but did not affect the percentage of cuttings that formed roots. However raising the temperature to 33/28 C greatly increased the number of cuttings produced by stock plants and the ensuing percentage of cuttings that formed adventitious roots thereby increasing the final number of rooted cuttings produced from each stock plant. The effects of stock plant temperatures on rooting were not the result of altered nutrient concentrations. However consistent relationships were found between adventitious root formation and boron concentration. Rooting percentages were very low (1“14) but rooted cutting production per stock plant (e.g. 12 rooted cuttings over a 14-week period at 33/28 C) was sufficient to establish field tests for clonal plantation forestry.

Full text available from: Official URL: http://www.frim.gov.my/v1/JTFSOnline/jtfs/v25n1/60...

Abstract

Propagation of tropical and subtropical eucalypts is often limited by reduced production of rooted cuttings in winter. We assessed whether changing the temperature of stock plants of Eucalyptus cloeziana from 28/23 (day/night) to 18/13 23/18 or 33/28 C affected the production nutrient concentrations and percentages of cuttings that subsequently formed roots. Lowering the temperature to 18/13 or 23/18 C greatly reduced the number of cuttings harvested from stock plants but did not affect the percentage of cuttings that formed roots. However raising the temperature to 33/28 C greatly increased the number of cuttings produced by stock plants and the ensuing percentage of cuttings that formed adventitious roots thereby increasing the final number of rooted cuttings produced from each stock plant. The effects of stock plant temperatures on rooting were not the result of altered nutrient concentrations. However consistent relationships were found between adventitious root formation and boron concentration. Rooting percentages were very low (1“14) but rooted cutting production per stock plant (e.g. 12 rooted cuttings over a 14-week period at 33/28 C) was sufficient to establish field tests for clonal plantation forestry.

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Item Type:	Article
AGROVOC Term:	Adventitious roots
AGROVOC Term:	Auxins
AGROVOC Term:	Boron
AGROVOC Term:	Calcium
AGROVOC Term:	Myrtaceae
AGROVOC Term:	Plant propagation
AGROVOC Term:	Eucalyptus
AGROVOC Term:	Temperature
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:26
URI:	http://webagris.upm.edu.my/id/eprint/21225

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