scholarly journals Regulatory challenges for tree seed source and certification in Indonesia: documentation versus productivity perspectives

2021 ◽  
Vol 917 (1) ◽  
pp. 012025
Author(s):  
A Nirsatmanto ◽  
S Sunarti
Keyword(s):  
Genetic Resources ◽  
Negative Impact ◽  
Forest Tree ◽  
Seed Source ◽  
Advanced Technology ◽  
Seed Productivity ◽  
Seed Sources ◽  
Seed Supply ◽  
Ongoing Monitoring ◽  
Tree Seed

Abstract Permen LHK:P.3/MENLHK/SETJEN/KUM.1/1/2020 and Perdirjen RLPS:P.05/V-SET/2010 are two major regulations for forest tree seed implementation in Indonesia. Referring some Articles in the Regulations, it seems to need further investigation and analysis because primary task of seed source has been confusing with tasks of genetic resources, breeding, and plantation. Varies in reproductive system and advanced technology are also neglected. In addition, documentative (referred as by-process) seems to be main priority rather than ensuring actual seed productivity (referred as by-product). Such condition causes some irrelevant standards in the regulations and posed a contra-productive for the seed sources and further certification. As a result, it tends to eliminate many potential stands as seed source, and poses a causality negative impact diminishing tree grower’s interest for supplying seed and maintaining genetic resources. These problems and along with the increasing difficulty in seed supply have become challenges for the importance of ongoing monitoring and assessment of the existing regulations. This paper proposes some ideas addressing such challenges through regulatory improvements in optimizing the task of seed source, such as re-defining some standards, and focusing on real seed productivity. The improved regulation is also expected to stimulate involvement of community in seed source activities and maintaining potential genetic resources.

scholarly journals Implementation Strategy of Forest Tree Seed in South Kalimantan Province

2020 ◽  
Vol 8 (2) ◽  
pp. 91-106
Author(s):  
Dede J. Sudrajat ◽  
◽  
Kurniawati P. Putri ◽  
Rizky Ary Fambayun ◽  
◽  
...  
Keyword(s):  
Swot Analysis ◽  
Seed Quality ◽  
Production Systems ◽  
Green Revolution ◽  
Forest Tree ◽  
Seed Sources ◽  
Seed Supply ◽  
Systematic Strategy ◽  
Seedling Distribution ◽  
Tree Seed

The green revolution movement is an action to change people's behavior quickly and precisely to care for environment quality through planting activities in South Kalimantan Province. This movement requires the quality forest tree seed supply, thus requiring research to determine an integrated and systematic strategy for developing forest tree seed programs in South Kalimantan in the next 10 years. SWOT analysis (strengths, weaknesses, opportunities, threats) with the analytical hierarchy process approach is used to determine the planning strategy. The results of the analysis show that the position of forest tree seed implementation programs is in an investment position, which shows a big opportunity but still has internal constraints/weaknesses. Weakness-opportunities strategies were chosen with 6 programs, i.e.: increasing the human resources competence; construction of facilities and infrastructure for seeds and seedlings certification; organizing certification of seed sources, seedling quality and seed quality; development of superior seed sources; strengthening of quality seed and seed production systems; and the provision of technological information, documentation and supervision systems of the seed and seedling distribution. This strategy can be described in a work program which is expected to be able to improve the performance of the forest tree seed implementation in order to provide quality seeds and seedlings and to become a community economic generator from the forest tree seed sector in South Kalimantan.

scholarly journals Stratification and Light Improve Germination of Katsura Tree Seed

2000 ◽  
Vol 10 (3) ◽  
pp. 571-573 ◽  
Author(s):  
Michael S. Dosmann ◽  
Jeffery K. Iles ◽  
Mark P. Widrlechner
Keyword(s):  
Germination Percentage ◽  
Seed Source ◽  
Seed Sources ◽  
Cercidiphyllum Japonicum ◽  
Light Requirements ◽  
Germination Value ◽  
Peak Value ◽  
Tree Seed

Germinability of two, half-sib seed sources of Cercidiphyllum japonicum Sieb. & Zucc. and one seed source of Cercidiphyllum magnificum (Nakai) Nakai was determined after not stratifying or stratifying seeds at 3.5 ± 0.5 °C (38.3 ± 0.9 °F) for 8 days followed by germination for 21 days at 25 °C (77 °F) in darkness or under a 15-hour photoperiod. Stratification was not required for germination, but increased germination percentage, peak value, and germination value for both species. Stratification increased germination of C. japonicum from 42% to 75%, and germination of C. magnificum from 12% to 24%. Light enhanced germination of nonstratified seeds of one source of C. japonicum and of C. magnificum from 34% to 52% and from 8% to 15%, respectively. Stratification improved germinability of both species and obviated any preexisting light requirements the seeds may have had.

scholarly journals Advantages of Using Selected Seed Sources of Sycamore and Sweetgum for Field Nursery Production and Transplant Establishment

1994 ◽  
Vol 12 (4) ◽  
pp. 190-192
Author(s):  
Michael A. Arnold ◽  
W. Edgar Davis
Keyword(s):  
Seed Orchard ◽  
Forest Tree ◽  
Seed Source ◽  
Improvement Program ◽  
Platanus Occidentalis ◽  
Seed Sources ◽  
Nursery Production ◽  
Sib Families ◽  
Bare Root ◽  
Field Production

Abstract Adaptability of forest tree improvement program seed sources to landscape nursery production and subsequent bare-root transplanting were investigated. Growth during two years of field production of seedlings from two elite half-sib families of sycamore (Platanus occidentalis L.) and a bulk open pollinated seed orchard mix of sweetgum (Liquidambar styraciflua L.) were compared with a commercially available seed source of sweetgum and a locally collected half-sib family of sycamore. Utilization of select half-sib families of sycamore resulted in 11% to 19% increases in height and an 11% increase in caliper during field production compared to the local seed source. Seedlings from elite half-sib families of sycamore resumed limited height and caliper growth during the year following transplanting while seedlings from the local seed source did not. Less pruning cuts were required to remove multiple leaders and large basal suckers on elite sycamore and sweetgum seedlings during production.

scholarly journals Forest Tree Seed Directory

Nature ◽  
1962 ◽  
Vol 195 (4841) ◽  
pp. 545-545
Keyword(s):  
Forest Tree ◽  
Tree Seed

scholarly journals Forschung zur Vielfalt, vielfältige Forschung: Ziele und Wege der Forstgenetik | Research on diversity, diverse research: objectives and approaches in forest genetics

2001 ◽  
Vol 152 (5) ◽  
pp. 162-168 ◽  
Author(s):  
Reiner Finkeldey
Keyword(s):  
Genetic Resources ◽  
Genetic Information ◽  
Temporal Dynamics ◽  
Forest Tree ◽  
Gene Marker ◽  
Adaptive Potential ◽  
Forest Genetics ◽  
Marker Loci ◽  
Forest Genetic ◽  
Forest Genetic Resources

The genetic information about forest trees is not only of crucial importance for the yield of forestry production systems,but also for determining the evolutionary adaptive potential of tree populations. Thus, the stability of forest ecosystems depends on the sustainable management of forest genetic resources. In this context, tree breeding and conservation of forest genetic resources are mentioned as main applications of research in forest genetics. Genetic inventories are conducted in order to observe the spatial distribution of genetic information at gene marker loci. Such studies allow us to elucidate the evolutionary history of populations and, thus, to draw conclusions about their evolutionary adaptability. Results of a genetic inventory of oak (Quercus spp.) populations native to Switzerland are presented, and their significance for the characterization of genetic systems and adaptive potential is discussed. Future research into forest genetics should aim at improving our understanding of the relationship between variation at biochemical and molecular marker loci and adaptive processes in forest tree populations. The temporal dynamics of genetic structures of forest tree populations as a consequence of anthropogenic environmental change is another important topic of forest genetics in particular for the conservation of rare species.

Nutrient Content of the Aboveground Tissue of 12-week-old Loblolly Pine Intraprovenance and Interprovenance Crosses

1975 ◽  
Vol 5 (4) ◽  
pp. 592-598 ◽  
Author(s):  
R. A. Woessner ◽  
C. B. Davey ◽  
B. E. Crabtree ◽  
J. D. Gregory
Keyword(s):  
Loblolly Pine ◽  
Dry Matter ◽  
Dry Weight ◽  
Nutrient Content ◽  
Seed Source ◽  
Good Linear ◽  
Available Nutrients ◽  
Seed Sources ◽  
Linear Relationships ◽  
Aboveground Tissue

Nutrient content (P, K, Ca, Mg) of the aboveground tissue of a series of full-sib loblolly crosses was found to vary by genotype. Variability among and within seed sources is indicated for the ability to absorb Ca and Mg. Absorption of P and K was not found to be dependent on seed source, but the full-sib crosses differ. Good linear relationships were found between plant dry weight and weight of element but not between plant dry weight and percentage of element. Certain highly efficient crosses can be expected to be good producers of dry matter on sites low in available nutrients.

scholarly journals Genetic diversity in introduced Douglas-fir and its natural regeneration in Central Europe

2019 ◽  
Vol 93 (4) ◽  
pp. 535-544
Author(s):  
Charalambos Neophytou ◽  
Marcela van Loo ◽  
Hubert Hasenauer
Keyword(s):  
Genetic Diversity ◽  
Central Europe ◽  
Natural Regeneration ◽  
Forest Tree ◽  
Douglas Fir ◽  
Native Forest ◽  
Next Generation ◽  
Planted Forests ◽  
Seed Sources ◽  
The 19Th Century

Abstract Since its first introduction in the 19th century, Douglas-fir has become the economically most important non-native forest tree species in Central European countries. Many of these planted forests are important seed sources and/or exhibit natural regeneration. Thus, it is important to assess (1) the genetic diversity of the mature stands and (2) if the genetic diversity can be passed on to the next generations. In order to address these issues, we genotyped mature Douglas-fir individuals and natural regeneration from >100 native and non-native populations using nuclear microsatellite markers. We compared the genetic diversity of native North American populations with mature Douglas-fir populations in Central Europe. The results show that genetic diversity did not differ significantly between European populations and the assigned native origin. Using a subset of 36 sites from Central Europe, we detected a significant reduction in the genetic diversity of adult versus naturally regenerated juvenile trees, indicating a bottleneck effect in the next generation of European Douglas-fir stands. The main reason may be that the mature European Douglas-fir stands are highly fragmented and thus the stand size is not adequate for transmitting the genetic diversity to the next generation. This should be taken into account for the commercial harvesting of seed stands. Seed orchards may offer a potential alternative in providing high quality and genetically diverse reproductive material.

Silver Maple Seed Sources for Increased Biomass Production

1988 ◽  
Vol 5 (3) ◽  
pp. 180-184 ◽  
Author(s):  
Richard F. Kopp ◽  
Wayne A. Geyer ◽  
William R. Lovett
Keyword(s):  
Biomass Production ◽  
Great Plains ◽  
Height Growth ◽  
Seed Source ◽  
Stem Number ◽  
Seed Sources ◽  
Short Rotation ◽  
Silver Maple ◽  
South Central ◽  
Maple Seed

Abstract Silver maple shows promise for use in short-rotation intensive culture energy plantings. A seed source study composed of trees from 26 midwest locations was established in south-central Nebraska in 1979 to determine where silver maple seed should be collected for use in the central Great Plains. Trees were evaluated for survival, height growth, and number of dominant stems per tree during their seventh growing season. Sources from eastern Nebraska, western Iowa, eastern Kansas, and northwest Missouri generally exhibited the greatest survival, height growth, and number of dominant stems. Height growth appears to be under stronger genetic control than stem number, suggesting that selection for height should take priority when selecting trees for biomass production. Geographic trends related to survival and height growth, but not stem number, were observed. Environmental or geographic factors that are strong predictors of seed source performance could not be identified. Planting the most locally produced seed is advisable for the central Plains. North. J. Appl. For. 5:180-184, Sept. 1988.

scholarly journals Performance of Green Ash Seed Sources at Four Locations in the Great Plains Region

2005 ◽  
Vol 22 (1) ◽  
pp. 54-58
Author(s):  
Wayne A. Geyer ◽  
Keith D. Lynch ◽  
John Row ◽  
Peter Schaeffer ◽  
Walter Bagley
Keyword(s):  
Great Plains ◽  
Strong Interaction ◽  
Height Growth ◽  
Cold Injury ◽  
Seed Source ◽  
Green Ash ◽  
Seed Sources ◽  
Ash Trees

Abstract Green ash trees from 10 seed sources were planted in a test in 1961 in four states of the Great Plains Region. After more than 20 years, height growth indicates a strong interaction between seed source and plantation location. Larger trees were from southerly sources within about three degrees of latitude of the plantation site. Beyond those limits, cold injury may result. Height and dbh age-age correlations were highly significant at 8 and 20+ years. Height and dbh correlated negatively with a decrease in latitude. North. J. Appl. For. 22(1):54–58.

The effect of genotype on biomass and nutrient content in 11-year-old loblolly pine plantations

1979 ◽  
Vol 9 (2) ◽  
pp. 224-230 ◽  
Author(s):  
P. E. Pope
Keyword(s):  
Loblolly Pine ◽  
Plant Biomass ◽  
Soil Nutrient ◽  
Dry Weight ◽  
Nutrient Content ◽  
Seed Source ◽  
Elemental Content ◽  
Total N ◽  
Seed Sources ◽  
Hilly Region

Dry weights and nutrient contents of all aboveground biomass components were estimated for four seed sources of 11-year-old loblolly pine (Pinustaeda L.) grown in plantations of the same spacing on an old-field site of high quality in the hilly region of north-central Arkansas, U.S.A. Soil nutrient content was estimated to a depth of 0.61 m. Stand data averaged over all seeds sources are in agreement with published reports for dry weight and nutrient accumulation for loblolly pine if differences associated with seasonal variation are considered. Seed source significantly affected total dry matter and nutrient accumulations. Estimated total aboveground mean annual accumulation of biomass for the four seed sources ranged from 5.99 × 103 to 11.17 × 103 kg/ha per year. Elemental accumulation (kilograms per hectare per year) ranged from 14.06 to 23.66 for N, 1.54 to 3.45 for P, and 6.96 to 18.43 for K. On the average, trees comprise 84% of the aboveground plant biomass and contain 76% of the N, 77% of the P, and 90%, of the K associated with plant tissue. The significant influence of seed source on these stand values can affect the potential impact of short rotation, total tree harvesting on long-term site productivity. The elemental content of the tree biomass ranged from 7 to 11% of the total N, 20 to 35% of the P, and 14 to 30% of the K in the soil–litter–plant system.

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