• Journal of Korean Society of Forest Science
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• v.85 no.4
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• pp.596-604
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• 1996

This study was carried out to offer the successive method of cultivation and increase the productivity of mushroom yield with good quality through the elevation of rate of spawn development for Lentinus edodes. Studied about the analysis of current management of actural cultivation, a base of these, researched and presented for the upward method of productivity through an experiment of the high rate of spawn development and cultivation, putting first cultural environment. The results obtained were as follows ; 1. As the result of the analysis of current management in actural cultivation, many cultivators had a tendency to neglect managements of cultivation. These were reason for the deficiency of labour, funds and the lack of knowledge of cultivation, etc. 2. Water contents in bed logs according to the date of inoculation was shown as the decreasing order of 28.63%(3/12), 25.20%(3/25) and 23.19%(4/10). For the purpose of the maintenance of the water contents, the full-development of mycelium in bed logs and the dispersion of labour, the date of inoculation should be started in the early March. 3. The difference of the rate of spawn development among species was not shown, 100%(Mori 465). 98.98%(Mori 3046) on the spawn in high temperature and 98.97%(Mori 290) on the spawn in low temperature. The relative rate of spawn development was 97.70%(Mori 465), 82.45%(Mori 3046) on the spawn in high temperature and 88.87%(Mori 290) on the spawn in low temperature, it showed the difference. The spawn should be selected carefully in the future, as the spawn of cultivater's preference showed the difference for the development of mycelium. 4. The rate of spawn development following the date of inoculation was 100.0%(3/12), 98.98%(3/25) and 96.79%(4/10) on the spawn in high temperature and 99.09%(3/12), 98.97%(3/25) and 97.89% (4/10) in low temperature, it showed little difference. And the relative rate of spawn development was 97.70%(3/12), 82.45%(3/25) and 81.42%(4/10) on the spawn in high temperature and 93.27%(3/12), 89.67%(3/25) and 88.87%(4/10) that in low temperature, As the result of the relative rate, the time of inoculation of spawn should begin in the early March. 5. The height of stock logs on temporary placing should be less than 60cm at most on the surface, because of the low rate of water contents.

• Journal of Bio-Environment Control
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• v.22 no.2
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• pp.146-153
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• 2013

This study was conducted to enhance graft-take ratio and quality of grafted tomato seedlings by controlling temperature and humidity during the healing and acclimatization processes. Three temperature levels ($20^{\circ}C$, $23^{\circ}C$, and $26^{\circ}C$) were carried out to determine optimum temperature on four rootstocks. In addition, twelve combinations of three relative humidity levels (70%, 80%, and 90%) and four temperature levels ($17^{\circ}C$, $20^{\circ}C$, $23^{\circ}C$, and $26^{\circ}C$) were set up to evaluate the effect of relative humidity and temperature on the graft-take ratio of grafted seedlings. In the other hand, five relative humidity periods (H0, H1, H2, H3, and H4: 90% relative humidity for first 0, 1, 2, 3 and 10 days and afterwards relative humidity was reduced to 70%, respectively) were examined effect of relative humidity periods on the graft-take and quality of grafted seedlings. The higher graft-take ratios (84.0~87.4%) were showed at $23^{\circ}C$ compared to $20^{\circ}C$ and $26^{\circ}C$ in all rootstocks. Graft-take ratios decreased and number of diseased plants increased at high temperature. The graft-take ratios increased with increasing relative humidity in all temperature levels on the $3^{rd}$ and $7^{th}$ day after grafting. However, increasing relative humidity significantly increased percent of diseased plants. The graft-take ratio reduced at ($26^{\circ}C$) and ($17^{\circ}C$) temperature under all relative humidity conditions. The graft-take ratio increased with increasing period of 90% relative humidity. Maximum graft-take ratios were observed in H2 and H3 treatments. Graft-take ratio decreased with increasing 90% relative humidity for 10 days (H4). Diseased plants had not been found in H0, H1, H2, and H3 treatments. Seedling quality was improved through increasing fresh and dry weight of root, compactness, and root morphology of tomato seedlings in H2 and H3 treatments. Therefore, high relative humidity (90%) for first 2 or 3 days and afterwards reduced low relative humidity (70%) at $23^{\circ}C$ condition during healing and acclimatization promoted the graft-take and quality of grafted tomato seedlings.

• Journal of Bio-Environment Control
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• v.23 no.3
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• pp.199-204
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• 2014

This study evaluated the effect of water content in the substrate during pre- and post-grafting period on the survival rate and quality of tomato plug seedlings. Nine combinations of three water levels (high, medium, and low) were set up in the substrate of both scion and rootstock. The water content in the substrate of the scion did not affect the survival rate of grafted tomato seedlings, while the survival rate was statically different among the various water contents in the substrate of the rootstock. The maximum survival rates (100%) were observed in seedlings treated with high water levels in the substrate of the rootstock, and the survival rates declined with decreasing water content in the rootstock substrate. The growth characteristics were not significantly affected by different water content in the scion substrate, while they were statically different among the seedlings treated with various water contents in the rootstock substrate. The growth characteristics decreased with decreasing water content in the rootstock substrate. The highest value of compactness was observed in grafted seedlings, which combined medium water level in the scion and high water level in the rootstock substrate treatment. The root morphology of tomato seedlings was also affected by water content in the rootstock substrate. The total root surface area, total root length, and number of root tips decreased with deceasing water content in the rootstock substrate.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2001.11b
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• pp.62-63
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• 2001

• Journal of Sericultural and Entomological Science
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• v.31 no.2
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• pp.69-71
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• 1989

Experiments were conducted to investigate the effect of topping from mulberry graftages on the their size. Topping season was examined at 10 days intervals from July 15 to August 5 1986 and 1987 on the paddy and upland, respectively. The results were : 1. Topping increased the passed rate of graftages 3.0-15.9%, compared with the control. 2. Optimum season of topping fell around July 15. 3. Topping showed no difference to branch length, survival rate and shoot length in the next year. 4. There was no difference between paddy and upland nursery garden in the passed rate.

• Korean Journal of Plant Resources
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• v.21 no.1
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• pp.36-40
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• 2008

To product grafts and construct its spread-system effectively, this study was carried out to investigate into effects on the survival percentage and growth in walnut trees(Juglans sinensis Dode) according to transplanting type and post-epicotyl grafting treatment. In the average survival percentage of the grafting according to post-epicotyl grafting transplanting type, TPGB1(transplanting in grafting bed) showing 89.02% was highest. Also, the survival percentage was different from appropriate temperature and humidity within treatment. As a result of the average survival percentage of the grafting by species, KWN-3 having 81.59% was highest with high survival percentage of total treatment in general. In addition, it is concluded that the nutrition condition of scions and collecting parts are strongly related to survival percentage on having significantly difference of its survival percentage by species. The growth rate of the survival grafts by transplanting type after grafting revealed that all of the investigation items(height and diameter growth of grafts, diameter growth of scions and etc.) resulted in same trend. TPGB1 having the highest tree height growth, 15.97cm($2.0{\sim}59.0cm$), showed the highest growth on diameter growth of shoots, 7.55mm($1.65{\sim}14.71mm$), and scions, 8.12mm($1.82{\sim}13.58mm$), as well. In the growth of each treatment according to different developing parts of shoots in grafts, the lateral bud, 12.05cm, was much superior to the terminal bud,9.57cm, on only graft height growth. However, the survival rate according to collecting parts of scions and developing parts of shoots with same treatment was not different with among-species.

• Korean Journal of Plant Resources
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• v.27 no.2
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• pp.183-187
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• 2014

Hovenia dulcis var. koreana Nakai, the oriental raisin tree, has been considered not only fruit but an herbal medicine in East Asia including Korea, Japan and east China. As honey plant, value of this species had been rising steadily. The aim of this study was conducted to develop the propagation technique by scion collection time, scion age and vinyl house on survival rate of H. dulcis. The survival rate by veneer grafting showed no significant differences among 3 new cultivars. The scion collection at the northern temperature zone was observed to be the most appropriate time before the spring equinox when the plants are fully dormant. Especially, the installation of vinyl house showed 86% survival rate by veneer grafting. The scion age was effective 1 year shoot than 2 years shoot for increase the grafting survival rate. In this case, the installation of vinyl house can contribute above 80%.

• Korean Journal of Environment and Ecology
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• v.36 no.3
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• pp.327-337
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• 2022

Ecological restoration is considered a good means to prevent biodiversity loss in terms of the ecosystem's health and sustainability. However, there are difficulties in putting it into practice as there is no comprehensive and objective standard for the selection of plant species, such as environmental, ecological factors, and restoration goal setting. Therefore, this study developed an evaluation index necessary for selecting plant species for restoration using the Delphi method that synthesizes the opinions of the expert group. A survey with 38 questionnaires was conducted twice for experts in ecological restoration, etc., and the importance and priority of evaluation indicators were analyzed by dividing the restoration targets into inland and island regions. The result of the importance analysis showed that "native plants" had the highest average of 4.9 among the evaluation indices in both inland and island regions, followed by "seed security", "propagation", and "root growth rate". In the inland region, the index priority was analyzed in the order of "native plants", "appearance frequency", "root growth rate", "distribution range", and "seed security" in the island region, it was analyzed in the order of "native plants", "root growth rate", "appearance frequency", "distribution range", and "tolerance", showing slight differences between the two indicators. As a result of the importance and priority indicator analysis, we set the mean importance and priority of 4.1 and 2.9, respectively, in the inland region and 4.2 and 2.9, respectively, in the island region. As for the criteria of selecting plant species for ecological restoration, the "native plants" had the highest importance and priority. "Seed securing", 'viability", "topography", "proliferation", "tolerance", "soil conditions", "growth characteristics", "early succession", "distribution range", "appearance frequency", and "germination rate" were classified into subgroups of low importance and priority. The lowest indicators were "final stage of succession", "transition period", 'transition stage", "root", "reproduction", "soil", "appearance", "technology", "landscape", "climate", and "germination rate". We expected that the findings through objective verification in this study would be used as evaluation indicators for selecting native plant species for ecological restoration.

• Journal of Korean Society of Forest Science
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• v.18 no.1
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• pp.23-33
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• 1973

The survivals of loblolly pine, Pinus taeda L. was gradually increased from southeast to northwest in the species range and the provenances from southeast of the species range showed fast growth rate. It is suggested that the loblolly pine from Arkansas and Texas will be good for inland of Korea, and the trees from Maryland and North Carolina Piedmont will be suitable for the west coastal and east coastal region of Korea, and trees from North Carolina Coastal Plain will be promising one for south coastal region of Korea.

• Journal of Plant Biology
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• v.11 no.1
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• pp.27-32
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• 1968

In the present experiment as a basic study for establishing a hybrid seed orchard, an observation was made on the survivability of grafts using Pinus rigida as the stock and its hybrids as the sciion, and on the shape and germination of pollen collected from grafted plants. The results are summarized as follows: 1. The hybrid scion of P. rigida.taeda or $P. rigida{\times}(P. rigida.taeda)$ grafted into P. rigida stock showed lower survivability than the homoplastic graftings of P. rigida. 2. Five among the eight eleven-year old scions homoplastically grafted into two-year old stock for the staminate strobile one year after their grafting. 3. There was no difference in the size and germination ability between the pollen collected from homoplastically grafted plant and from the normal one. 4. The pollen collected from the grafted plant is thought to be usable for the control pollination as the germination of such pollen was considerably good.