Kannan C.S. Warrier, Scientist at the Institute of Forest Genetics and Tree Breeding, Coimbatore has 20 years of research experience in the fields of tree improvement and clonal forestry and has released three productive clones of Casuarina equisetifolia suited for sodic soils. He is the Coordinator of the ENVIS Centre on Forest Genetic Resources and Tree Improvement at IFGTB.
ABSTRACT Eucalyptus an important pulp wood species grown in India by major industries, corporatio... more ABSTRACT Eucalyptus an important pulp wood species grown in India by major industries, corporations and farming communities due to its constant demand. But, this Eucalyptus species to environmental stresses and adaptability to degraded conditions. Physiological parameters studies conducted for Eucalyptus clones revealed that, thirteen clones registered better growth performance along with the favourable physiological parameters including for EERP Key Introduction pressure on existing forest resources has been constantly increasing with the burgeoning human and cattle population (Singh & Singh 1987). The situation and massive efforts are required not only to to bring more area under forest. The growing emphasis on forestry and agroforestry programmes in India has resulted in an increasing demand of various multipurpose tree seedlings, and standardization of nursery conditions are necessary to produce healthy seedlings The information on the physiological response of seedlings to environmental stress should be helpful for better understanding of seedling establishment in different forestry programmes (Rao 1988, 2005). Demand for pulpwood is ever increasing and there exists widening gap between short play a vital role in bridging the gap. Eucalyptus is one of the important pulp wood species widely planted and domesticated species in India. At present, about one million ha of Eucalyptus plantations are maintained by forest department and corporations and nowadays paper industries take lead in plantation activities through contract farming as well. Hence, clonal forestry is gaining and in turn to bridge the gap between the growing demand and inadequate supply of wood and the productivity of Eucalyptus plantations
ABSTRACT Though Casuarina equisetifolia is amenable for vegetative propagation, large scale opera... more ABSTRACT Though Casuarina equisetifolia is amenable for vegetative propagation, large scale operational clonal forestry programmes of this species are in its early stages of development in India. Since C. equisetifolia is a poor coppicer, getting juvenile materials for vegetative propagation or maintenance of juvenility is a serious problem. Development of a suitable cloning technique and induction of juvenility in this species will go a long way in establishing large scale plantations of end use specific clonal materials. A cost effective water culture technique of rooting could be developed for C. equisetifolia during the current study. Both phylloclad cuttings and individual ‘needles’ treated with 100 mgl-1 of IBA for 12 hours could be rooted in ordinary drinking water using this method. The success of rooting was up to 100 per cent for ‘needles’ and 80 per cent for sprigs. Plantlet development from rooted sprigs and individual ‘needles’ was 95 and 65 per cent respectively.
India's annual imports of logs and wood products have increased from $500 million to $2.7 bil... more India's annual imports of logs and wood products have increased from $500 million to $2.7 billion over the past decade. Many tree species have been taken up for the promotion of tree cultivation outside the forest areas; one of them is Melia dubia Cav. (Meliaceae). It is a multipurpose tree species, finding use as a raw material for plywood, fodder for livestock, and a secondary timber. Large-scale planting is hampered by poor seed (less than 10%) germination despite producing abundant quantities of fruits every year; lack of package of practices thereby making planting stock unavailable. A research study was carried out at the Institute of Forest Genetics and Tree Breeding in Coimbatore, India to investigate seed germination and rooting of cuttings. Seeds were subjected to different pretreatments against control. Seeds stored in polybags under ambient conditions for over a year gave the highest germination (94.01 per cent). Juvenile stem cuttings (coppice), branchlets and mature branches of M. dubia were tried for rooting/sprouting. Coppice responded well to 1000–2000 mg/l IBA (liquid formulation). Sand was identified as the best rooting media for the multiplication of coppice. The stumps produced good coppice when cut at 120 cm above ground level with high survival percentage (60%) and increased sprout production. The size of the cutting and season of rooting plays a major role in the rooting of cuttings. Success in nursery production through vegetative production will open an opportunity to successful large scale plantations of M. dubia.
International Journal of Environment and Climate Change
Areas covering native plant and tree species protected on behalf of religious grounds are ... more Areas covering native plant and tree species protected on behalf of religious grounds are known as sacred groves. Apart from India, sacred groves occur in various countries including America, Australia, Africa, Asia and Europe. They are not merely patches of forests but are islands in desolated landscapes. Many valuable medicinal plants and wild relatives of cultivated species are residing in sacred groves which have got tremendous roles to play in species or tree improvement programmes. Ancient sacred groves should be treated as possessing “Incomparable Values” according to the National Environment Policy of India. This paper reviewed extensively, analyzed and presented the current status on these invaluable resource pockets in India.
Boswellia serrata Roxb. ex Coleb. is commonly known as Indian Olibanum or Indian Frankincense tre... more Boswellia serrata Roxb. ex Coleb. is commonly known as Indian Olibanum or Indian Frankincense tree. It belongs to the family Burseraceae. The tree is confined to Tropical Dry Deciduous Forest of India. It grows at altitudes up to 1,150 m in regions with annual temperatures between 0-45°C and annual rainfall between 500-2,000 mm. B. serrata has been listed in the threatened species of India. The principal threats of this species are slow growth coupled with poor regeneration. However, the population trends and habitat trends are stable. Due to its exudations of volatile oil, resin and gum, the tree has attained commercial significance. The oil obtained from this tree is very similar to turpentine oil and found suitable for paint making, varnish and used as printing ink in textile industries and in making distempers. It is a unique non coniferous source of turpentine employed for the manufacture of paints and varnishes. The resin obtained from this tree is used for preparation o...
ABSTRACT Eucalyptus an important pulp wood species grown in India by major industries, corporatio... more ABSTRACT Eucalyptus an important pulp wood species grown in India by major industries, corporations and farming communities due to its constant demand. But, this Eucalyptus species to environmental stresses and adaptability to degraded conditions. Physiological parameters studies conducted for Eucalyptus clones revealed that, thirteen clones registered better growth performance along with the favourable physiological parameters including for EERP Key Introduction pressure on existing forest resources has been constantly increasing with the burgeoning human and cattle population (Singh & Singh 1987). The situation and massive efforts are required not only to to bring more area under forest. The growing emphasis on forestry and agroforestry programmes in India has resulted in an increasing demand of various multipurpose tree seedlings, and standardization of nursery conditions are necessary to produce healthy seedlings The information on the physiological response of seedlings to environmental stress should be helpful for better understanding of seedling establishment in different forestry programmes (Rao 1988, 2005). Demand for pulpwood is ever increasing and there exists widening gap between short play a vital role in bridging the gap. Eucalyptus is one of the important pulp wood species widely planted and domesticated species in India. At present, about one million ha of Eucalyptus plantations are maintained by forest department and corporations and nowadays paper industries take lead in plantation activities through contract farming as well. Hence, clonal forestry is gaining and in turn to bridge the gap between the growing demand and inadequate supply of wood and the productivity of Eucalyptus plantations
ABSTRACT Though Casuarina equisetifolia is amenable for vegetative propagation, large scale opera... more ABSTRACT Though Casuarina equisetifolia is amenable for vegetative propagation, large scale operational clonal forestry programmes of this species are in its early stages of development in India. Since C. equisetifolia is a poor coppicer, getting juvenile materials for vegetative propagation or maintenance of juvenility is a serious problem. Development of a suitable cloning technique and induction of juvenility in this species will go a long way in establishing large scale plantations of end use specific clonal materials. A cost effective water culture technique of rooting could be developed for C. equisetifolia during the current study. Both phylloclad cuttings and individual ‘needles’ treated with 100 mgl-1 of IBA for 12 hours could be rooted in ordinary drinking water using this method. The success of rooting was up to 100 per cent for ‘needles’ and 80 per cent for sprigs. Plantlet development from rooted sprigs and individual ‘needles’ was 95 and 65 per cent respectively.
India's annual imports of logs and wood products have increased from $500 million to $2.7 bil... more India's annual imports of logs and wood products have increased from $500 million to $2.7 billion over the past decade. Many tree species have been taken up for the promotion of tree cultivation outside the forest areas; one of them is Melia dubia Cav. (Meliaceae). It is a multipurpose tree species, finding use as a raw material for plywood, fodder for livestock, and a secondary timber. Large-scale planting is hampered by poor seed (less than 10%) germination despite producing abundant quantities of fruits every year; lack of package of practices thereby making planting stock unavailable. A research study was carried out at the Institute of Forest Genetics and Tree Breeding in Coimbatore, India to investigate seed germination and rooting of cuttings. Seeds were subjected to different pretreatments against control. Seeds stored in polybags under ambient conditions for over a year gave the highest germination (94.01 per cent). Juvenile stem cuttings (coppice), branchlets and mature branches of M. dubia were tried for rooting/sprouting. Coppice responded well to 1000–2000 mg/l IBA (liquid formulation). Sand was identified as the best rooting media for the multiplication of coppice. The stumps produced good coppice when cut at 120 cm above ground level with high survival percentage (60%) and increased sprout production. The size of the cutting and season of rooting plays a major role in the rooting of cuttings. Success in nursery production through vegetative production will open an opportunity to successful large scale plantations of M. dubia.
International Journal of Environment and Climate Change
Areas covering native plant and tree species protected on behalf of religious grounds are ... more Areas covering native plant and tree species protected on behalf of religious grounds are known as sacred groves. Apart from India, sacred groves occur in various countries including America, Australia, Africa, Asia and Europe. They are not merely patches of forests but are islands in desolated landscapes. Many valuable medicinal plants and wild relatives of cultivated species are residing in sacred groves which have got tremendous roles to play in species or tree improvement programmes. Ancient sacred groves should be treated as possessing “Incomparable Values” according to the National Environment Policy of India. This paper reviewed extensively, analyzed and presented the current status on these invaluable resource pockets in India.
Boswellia serrata Roxb. ex Coleb. is commonly known as Indian Olibanum or Indian Frankincense tre... more Boswellia serrata Roxb. ex Coleb. is commonly known as Indian Olibanum or Indian Frankincense tree. It belongs to the family Burseraceae. The tree is confined to Tropical Dry Deciduous Forest of India. It grows at altitudes up to 1,150 m in regions with annual temperatures between 0-45°C and annual rainfall between 500-2,000 mm. B. serrata has been listed in the threatened species of India. The principal threats of this species are slow growth coupled with poor regeneration. However, the population trends and habitat trends are stable. Due to its exudations of volatile oil, resin and gum, the tree has attained commercial significance. The oil obtained from this tree is very similar to turpentine oil and found suitable for paint making, varnish and used as printing ink in textile industries and in making distempers. It is a unique non coniferous source of turpentine employed for the manufacture of paints and varnishes. The resin obtained from this tree is used for preparation o...
Uploads
Papers by Kannan Warrier