Biodiversitas Journal of Biological Diversity, 2018
Schmidt L, Rustiami H, Theilade I. 2019. Local monitoring of flowering and fruiting of Jernang, D... more Schmidt L, Rustiami H, Theilade I. 2019. Local monitoring of flowering and fruiting of Jernang, Daemonorops species in Sumatra, Indonesia. Biodiversitas 20: 118-125. Phenology and fruit production recordings of Jernang (Daemonorops spp.) were conducted in southern Sumatra over two one-year periods. Flowering and fruiting of 64 individual clumps with 570 stems > 2 m and 43 clumps with 478 stems > 2 m respectively were recorded on a monthly basis. Results showed that flowering and fruiting of Jernang took place throughout the year with a peak in April and May and at low level in September to March. Duration of male inflorescences was 2-3 months. Fruits were usually harvested for resin 2-3 months after flowering. Sex ratio of clusters was about 1:1. Flowers and fruits were produced on vigorously growing stems that had reached canopy light exposure. Clusters consisted of from 2 to 36 stems. In some clusters, all stems bore reproductive organs; in others, only few stems had flowers...
Vernacular/common names: keranji (Malay trade name for all Dialium wood); xoay, la met (Vietnam),... more Vernacular/common names: keranji (Malay trade name for all Dialium wood); xoay, la met (Vietnam), velvet tamarind (Eng.); kheng (Laos). The genus consists of about 30 species of which most species occur in Africa. Only 7 species grow in SE Asia-Pacific. Within the ...
This chapter pertains to the techniques of capturing the best genetic quality seeds a seed source... more This chapter pertains to the techniques of capturing the best genetic quality seeds a seed source can produce at the optimal time of high physiological maturity and maintaining these qualities throughout the handling processes, all at a minimum cost. Different collection and processing techniques apply to different species, seed types, situations, and purposes. Yet the collection and processing toolbox contains a number of “standard”methods for most of these groups. Records and documentation help in evaluating “best practice” for future method improvement, and it helps in linking offspring to seed source. Conditions are set for shortand long-term seed storage by their inert storability physiology. The potential storage life of seed may for some robust “orthodox” species be several decades, while no available storage conditions can maintain viability for sensitive “recalcitrant” seed. Seed testing aims at quantifying seed quality parameters such as seed weight, moisture content, purity, and germination. The methods contain a set of standard procedures for preparation and evaluation. Special types of evaluation contain, e.g., health teats and indirect methods of measuring seed viability. Information gathered through seed testing are used as a general quality documentation during seed trade and as a guide for subsequent handling.
Evergreen swamp forest in Cambodia: Floristic composition, ecological characteristics, and conser... more Evergreen swamp forest in Cambodia: Floristic composition, ecological characteristics, and conservation status
Page 1. 1 TECHNICAL NOTE NO.51 November 1998 INSECTS OF FOREST SEED compiled by Lars Schmidt Page... more Page 1. 1 TECHNICAL NOTE NO.51 November 1998 INSECTS OF FOREST SEED compiled by Lars Schmidt Page 2. 2 Titel Insects of forest seed Authors compiled by Lars Schmidt Publisher Danida Forest Seed Centre Series - title and no. Technical Note no. 51 ...
When seed producers and seed users are geographically or functionally separated, seeds are transf... more When seed producers and seed users are geographically or functionally separated, seeds are transferred from producers to users. In market-oriented systems, transfer includes the pricing of seed, which reflects the procurement cost and seed quality. Physiological quality is documented via the seed testing records. Genetic quality is documented as documents on origin or seed source. New types of tree planting by smallholders imply special problems in distribution and supply systems since production systems for tree seeds have large areas while many consumers have small space for planting. A centralized forest seed supply contains large central units with good facilities for production and procurement but is far from seed users. Alternative decentralized systems with many small producers may have problems meeting high standards of seed quality and dealing with central regulations.
Page 1. -> >- < cc O <r cc O Page 2. Tropical Forestry Page 3. Tropic... more Page 1. -> >- < cc O <r cc O Page 2. Tropical Forestry Page 3. Tropical Forestry Volumes Already Published in this Series Tropical Forest Seed by Schmidt, L. 2007 ISBN: 978-3-540-49028-9 Harvesting Operations in the Tropics ...
This publication documents the conservation status of Pinus merkusii in Thailand and proposes a c... more This publication documents the conservation status of Pinus merkusii in Thailand and proposes a conservation plan for the species based on the concept of genecological zonation. The aim is to conserve the genetic variation within the species, ie to select a ...
Biodiversitas Journal of Biological Diversity, 2018
Schmidt L, Rustiami H, Theilade I. 2019. Local monitoring of flowering and fruiting of Jernang, D... more Schmidt L, Rustiami H, Theilade I. 2019. Local monitoring of flowering and fruiting of Jernang, Daemonorops species in Sumatra, Indonesia. Biodiversitas 20: 118-125. Phenology and fruit production recordings of Jernang (Daemonorops spp.) were conducted in southern Sumatra over two one-year periods. Flowering and fruiting of 64 individual clumps with 570 stems > 2 m and 43 clumps with 478 stems > 2 m respectively were recorded on a monthly basis. Results showed that flowering and fruiting of Jernang took place throughout the year with a peak in April and May and at low level in September to March. Duration of male inflorescences was 2-3 months. Fruits were usually harvested for resin 2-3 months after flowering. Sex ratio of clusters was about 1:1. Flowers and fruits were produced on vigorously growing stems that had reached canopy light exposure. Clusters consisted of from 2 to 36 stems. In some clusters, all stems bore reproductive organs; in others, only few stems had flowers...
Vernacular/common names: keranji (Malay trade name for all Dialium wood); xoay, la met (Vietnam),... more Vernacular/common names: keranji (Malay trade name for all Dialium wood); xoay, la met (Vietnam), velvet tamarind (Eng.); kheng (Laos). The genus consists of about 30 species of which most species occur in Africa. Only 7 species grow in SE Asia-Pacific. Within the ...
This chapter pertains to the techniques of capturing the best genetic quality seeds a seed source... more This chapter pertains to the techniques of capturing the best genetic quality seeds a seed source can produce at the optimal time of high physiological maturity and maintaining these qualities throughout the handling processes, all at a minimum cost. Different collection and processing techniques apply to different species, seed types, situations, and purposes. Yet the collection and processing toolbox contains a number of “standard”methods for most of these groups. Records and documentation help in evaluating “best practice” for future method improvement, and it helps in linking offspring to seed source. Conditions are set for shortand long-term seed storage by their inert storability physiology. The potential storage life of seed may for some robust “orthodox” species be several decades, while no available storage conditions can maintain viability for sensitive “recalcitrant” seed. Seed testing aims at quantifying seed quality parameters such as seed weight, moisture content, purity, and germination. The methods contain a set of standard procedures for preparation and evaluation. Special types of evaluation contain, e.g., health teats and indirect methods of measuring seed viability. Information gathered through seed testing are used as a general quality documentation during seed trade and as a guide for subsequent handling.
Evergreen swamp forest in Cambodia: Floristic composition, ecological characteristics, and conser... more Evergreen swamp forest in Cambodia: Floristic composition, ecological characteristics, and conservation status
Page 1. 1 TECHNICAL NOTE NO.51 November 1998 INSECTS OF FOREST SEED compiled by Lars Schmidt Page... more Page 1. 1 TECHNICAL NOTE NO.51 November 1998 INSECTS OF FOREST SEED compiled by Lars Schmidt Page 2. 2 Titel Insects of forest seed Authors compiled by Lars Schmidt Publisher Danida Forest Seed Centre Series - title and no. Technical Note no. 51 ...
When seed producers and seed users are geographically or functionally separated, seeds are transf... more When seed producers and seed users are geographically or functionally separated, seeds are transferred from producers to users. In market-oriented systems, transfer includes the pricing of seed, which reflects the procurement cost and seed quality. Physiological quality is documented via the seed testing records. Genetic quality is documented as documents on origin or seed source. New types of tree planting by smallholders imply special problems in distribution and supply systems since production systems for tree seeds have large areas while many consumers have small space for planting. A centralized forest seed supply contains large central units with good facilities for production and procurement but is far from seed users. Alternative decentralized systems with many small producers may have problems meeting high standards of seed quality and dealing with central regulations.
Page 1. -> >- < cc O <r cc O Page 2. Tropical Forestry Page 3. Tropic... more Page 1. -> >- < cc O <r cc O Page 2. Tropical Forestry Page 3. Tropical Forestry Volumes Already Published in this Series Tropical Forest Seed by Schmidt, L. 2007 ISBN: 978-3-540-49028-9 Harvesting Operations in the Tropics ...
This publication documents the conservation status of Pinus merkusii in Thailand and proposes a c... more This publication documents the conservation status of Pinus merkusii in Thailand and proposes a conservation plan for the species based on the concept of genecological zonation. The aim is to conserve the genetic variation within the species, ie to select a ...
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