Large-scale vegetative propagation of lasiococca comberi by air layering

Kamila P. K., . and Panda P. C., . Large-scale vegetative propagation of lasiococca comberi by air layering. pp. 37-42. ISSN 0128-1283

Lasiococca comberi (Euphorbiaceae) a threatened forest tree species of Eastern Ghats of India has inherent problems of seed germination and seedling establishment in nature. To overcome this problem and to facilitate large-scale production of planting materials for reintroduction programmes to augment the wild populations of this threatened species an attempt has been made to develop an efficient vegetative propagation method through air layering. Three types of auxins such as indole-3-butyric acid (IBA) indole acetic acid (IAA) and naphthalene acetic acid (NAA) in different concentrations and combinations were used to induce rooting in stems of healthy mature trees in forests during rainy season. Air-layered branches treated with 5000 ppm IBA resulted in maximum percentage of rooting (95.23 7.6) maximum number (14.50 1.9) and length of roots (12.5 1.0 cm) minimum days taken for root initiation (18.5 0.5 days) and highest percentage of survival of air-layered propagules. The well-rooted branches were transplanted in polybags under mist house conditions for acclimatisation and hardening before field planting. The result of the present study can be useful for mass production of large-sized planting materials of this threatened species from mature trees in a relatively shorter period at a reasonable cost for reintroduction to natural habitats as a part of species recovery programme.

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Abstract

Lasiococca comberi (Euphorbiaceae) a threatened forest tree species of Eastern Ghats of India has inherent problems of seed germination and seedling establishment in nature. To overcome this problem and to facilitate large-scale production of planting materials for reintroduction programmes to augment the wild populations of this threatened species an attempt has been made to develop an efficient vegetative propagation method through air layering. Three types of auxins such as indole-3-butyric acid (IBA) indole acetic acid (IAA) and naphthalene acetic acid (NAA) in different concentrations and combinations were used to induce rooting in stems of healthy mature trees in forests during rainy season. Air-layered branches treated with 5000 ppm IBA resulted in maximum percentage of rooting (95.23 7.6) maximum number (14.50 1.9) and length of roots (12.5 1.0 cm) minimum days taken for root initiation (18.5 0.5 days) and highest percentage of survival of air-layered propagules. The well-rooted branches were transplanted in polybags under mist house conditions for acclimatisation and hardening before field planting. The result of the present study can be useful for mass production of large-sized planting materials of this threatened species from mature trees in a relatively shorter period at a reasonable cost for reintroduction to natural habitats as a part of species recovery programme.

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Item Type:	Article
AGROVOC Term:	Euphorbiaceae
AGROVOC Term:	Forest trees
AGROVOC Term:	Species threatened with extinction
AGROVOC Term:	Vegetative propagation
AGROVOC Term:	Air layering
AGROVOC Term:	Auxins
AGROVOC Term:	Rooting
AGROVOC Term:	Naphthaleneacetic acid
AGROVOC Term:	Indoleacetic acid
AGROVOC Term:	Survival
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/8190

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