• Korean Journal of Plant Resources
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• v.9 no.1
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• pp.23-29
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• 1996

Chungbuk native Polygnatum stenophyllum Max. for used in this experiment were regional groups that collected at Cheongju and Jecheon, and then classified by seed tuber weights as 15, 30, 45, 60g. Shoot emergency time was faster about $4\sim7$days in Chengju regional group than that of Jecheon. In different seed tuber weights, shoot emergency time was the faster, seed tuber weight was the heavier. All of growth factors such as plant height, stem length and leaf length were worse Cheongju regional group in compared with that of Jecheon but leaf width was not different. Yields per 10a in both of Cheongju and Jechon were 1,600kg. After due consideration to seed tuver cost, approximately 40g is regarded as the most suitable weight for cultivation of Polygnatum stenophyllum Max.

• Korean Journal of Plant Resources
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• v.9 no.3
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• pp.279-284
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• 1996

Effects of varieties and cutting lengths of Chinense Martrimony Vine on the growth characteristics and the yield of green shoot were investigated in order to obtain the basic data The Yuseong-2 was observed higher in the number of green shoot per plant, of green shoot, but smaller in the length and the width of leaves than those of Cheongyang native. The number of green shoot was decreased in longer cutting length, but the other growth characteristics were increased. The dry weight of green shoot was $1.01{\sim}0.03g$ and the ratio of stem to leaf in green shoot was higher in leaf than that of stem, and the ratio was 46 : 54. The dry yield of green shoot was $108{\sim}204kg/10a$ in Cheongyang native and $215{\sim}363kg/10a$ Yuseong-2 and the dry yield of green shoot of Yuseong-2 may be expected in this planting year. Each growth characteristic of varieties was highly positive correlation with the yield except the number of green shoot of Cheongyang native. The number of green shoot of Yuseong-2 was nagative correlation with each growth characteristic and the yield except the number of total leaves per plant.

• Korean Journal of Plant Resources
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• v.29 no.5
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• pp.625-629
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• 2016

A new Gomchwi cultivar ‘Gommany’ was bred by crossing between Gomchwi (Ligularia fischeri (Ledeb.) Turcz.) and Handaeri-gomchwi (Ligularia fischeri var. spiciformis Nakai). The selection and investigation of growth and yield characteristics were conducted from 2006 to 2011 in field and greenhouse of Highland Agriculture Research Institute, NICS, Rural Development Administration. The color of petiole ear was purple. Petiole trichome existed, but light of leaf back did not. Density of leaf vein was 5 degree in a newly developed cultivar ‘Gommany’. Plant height, leaf length, leaf width and petiole length were 47.7, 16.3, 21.2, and 31.4 ㎝, respectively in the 3 year of growth characteristics. Plant size was also higher than that of ‘Gondalbi’. Bolting and flowering time were Aug. 5 and Sept. 10, respectively. In contrast, Bolting time of ‘Gondalbi’ showed 25 days quite earlier bolting time compared to ‘Gommany’, Which led to earlier flowering time. ‘Gommany’ showed higher number of leaves (138) per plant compared to ‘Gondalbi’ (130). Furthermore, yield was 97% higher in ‘Gommany’ (1,575 g/plant) than in ‘Gondalbi’ (798 g/plant). ‘Gommany’ showed higher leaf thickness (0.69㎜) than ‘Gonalbi’ (0.46 ㎜), and consequently showed more hardness in leaf characteristics (24.3 ㎏/㎠) compared to ‘Gondalbi’ (23.0㎏/㎠). ‘Gommany’ showed higher resistance in the susceptibility of powdery mildew compared to ‘Gondalbi’. ‘Gommany’ cultivar was registered as a novel variety with number 90 in The Minister of the Korea Forest Service on December 2015.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.38 no.5
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• pp.391-397
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• 1993

Rye(Secale cereale cv. Chunchu), barley(Hordeum vulgare cv. Dusan 29#), and italian ryegrass(Lolium multiflorum cv. Barmultra) were treated at 0, 0.1, 0.3, and 0.6 % of NaCl solution for 30 days. Plant height, leaf length, and leaf area were decreased with increasing NaCl level, and leaf area was decreased mainly due to decrease of leaf length. Root length was decreased at higher NaCl levels, but root number was increased. Shoot dry weight was decreased by increasing NaCl levels in rye and italian ryegrass, but barley did not show significant change. Dry weight of root was more decreased than that of shoot at higher NaCl levels. Chlorophyll content was decreased, but electric contuctivty of shoots and roots was increased at higher NaCl levels. Na+ content in shoot and root was increased with increasing NaCl level but the degree was not same. Reducing power of roots was that three crops as affected by NaCl was not equal. Barley was the most tolerant to NaCl stress.

• Horticultural Science & Technology
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• v.30 no.2
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• pp.224-228
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• 2012

A new $Saxifraga$ $fortunei$ cultivar 'Crystal' was bred by crossing 'Dotaerang' with light pink and light Green (RP 58D) colored petals and 'Rocksun' with light pink and light green white (RP62A + GW157A) colored petals. The selection and flower characterization were conducted from 2004 to 2007 in a greenhouse of the National Institute of Highland Agriculture. The flowering of 'Crystal' occurred from September 21 for 31 days. The number of flowers per plant was 279.0 with many flowering habit. The flower coloration was mixed light pink and green white (RP62D + GW157B) at the opening. The number of petals were 7.0, with a width of 2.1 cm and length of 1.8 cm. The plant height was 15.3 cm and number of leaves was 133.7. 'Crystal' cultivar can be used for pot flower. Fifty percent shading is a good cultural practice against direct sunlight and soft rot disease would occurs usually by over-irrigation. 'Crystal' cultivar was registered as a new variety with No. 3466 at Korea Seed and Variety Service in April of 2011 year.

• Horticultural Science & Technology
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• v.30 no.3
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• pp.338-341
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• 2012

Campanula, native to Korea, is potentially an attractive potted or bedding plant. Experiments were conducted to produce a $F_1$ hybrid plant for a reduced plant height, 'Jiknyeo', by a conventional cross breeding between C. punctata Lam. and C. punctata Lam. var. rubriflora Mak. The crossing was carried out in July 2001 and the seeds were harvested in October 2001. Seeds were stored for two months at $5^{\circ}C$ for vernalization, and then were sown in March 2002. The $F_1$ hybrid have a purple flower color, and decreased plant height, leaf length, leaf width, and peduncle length. Each flower maintained freshness for a period of 20 days on the average. The whole flowering period of a plant was four months. The plant has flowering characteristics of an indeterminate inflorescence, prefers low humidity during the whole cultivation period, and requires low temperature in winter for flower bud differentiation.

• Horticultural Science & Technology
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• v.32 no.4
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• pp.434-439
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• 2014

This research was conducted to examine the effects of night interruption (NI) at different times on vegetative growth and flowering in Salvia splendens 'Salsa'. Plants were grown in a growth chamber under 9-h photoperiod (short-day, SD) or 9-h photoperiod plus NI with light intensity at $3-5{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ photosynthetic photon flux. The NI was applied at 18:00-22:00 HR (NI18), 22:00-02:00 HR (NI22), or 02:00-06:00 HR (NI02). The net photosynthetic rate under NI18, NI22, and NI02 increased by 0.33, 0.16, and $0.13{\mu}mol{\cdot}CO_2{\cdot}m^{-2}{\cdot}s^{-1}$, respectively, during the NI period. Dry weight, plant height, and the number of nodes under NI were not significantly different from those of the plants under SD. However, flowering was earlier by approximately 9.8 days, and the number of flowers increased to 138.7 in NI02 compared to 36.4 flowers under SD at 17 weeks after the treatment. Our results indicate that NI02 was the most effective treatment in promoting flowering. Although vegetative growth of salvia was not increased in response to the increased net photosynthesis, flowering was promoted. Under NI18, NI22, and NI02 treatments, 77.8, 88.9, and 100.0% of salvia plants flowered within 8 weeks, whereas 44.4% of the plants flowered within the same time under SD conditions.

• Korean Journal of Organic Agriculture
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• v.25 no.4
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• pp.789-804
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• 2017

This study was conducted to investigate the growth and physiologycal activitis of Aruncus dioicus var. kamtschaticus (Maxim.) H. Hara under the NaCl treatment conditions (0, 100, 200, 300 mM). After 30 days treatment, the growth and physiologycal activitis were investigated. In the growth of plants, the plant height, leaf width, leaf length and ion level were reduced at NaCl treatments of more than 100 mM. The total polyphenol content was decreased by NaCl in a concentration-dependent manner compared to the control group. The contents of total flavonoids did not show any difference at the concentration of 200 mM and 300 mM. However, the content of total flavonoid decreased compared with that of control. In antioxidant activity, the DPPH and ABTS radical scavenging activity and reducing power activity were decreased by NaCl concentration compared to the control. When changes in the content of NO production was monitored by ELISA, production inhibitory effect was 94.5%, 70%, 63%, 56.9% in NaCl concentration of 0, 100, 200, 300 mM, respectively. The growth, ion level, antioxidant and anti-inflammation activity of Aruncus dioicus var. kamtschaticus was reduced at NaCl treatments of more than 100 mM.

• Korean Journal of Soil Science and Fertilizer
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• v.30 no.2
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• pp.129-134
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• 1997

Effect of soil moisture level on the growth of ginger plant was investigated through a pot experiment. The soil used for this study was collected from a newly reclaimed hillside land. The soil was a silty clay loam(19% sand, 57% of silt and 24% of clay), acidic in soil rection(pH 4.7, in $H_2O$) and low in organic matter content(1.2%). Soil moisture levels selected for the experiment were 10, 15, 20, 25, and 30% on weight basis. Under the soil moisture of 20-25%, the emergence ratio was 80-100%, 25 days alter planting. The performance of above ground parts was best under 20-25% of soil moisture. When the soil moisture content was far from 25%, high or low, the die out of above ground parts of ginger tended to increase. Under 20-25% of soil moisture the growth of roots was best and the occurrence of root rot was minimal.

• Korean Journal of Soil Science and Fertilizer
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• v.30 no.2
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• pp.196-199
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• 1997

We studied the effect of inoculation of microorganisms known to produce plant growth promoting substances, on the growth and yield of cucumber(Cucumis sativa L.), through a field experiment. The microorganisms used were isolated from the forest soil and consisted of Micrococus sp., Baccilus sustilis, Enterobacter agglomerans, Baccilus megaterium, Pseudomonas putida, Cellulomonas sp. and Staphylococus xyposus. Fotr the multiplication, microorganisms were cultured in liquid media of Pseudomonas P and Sabouraud dextrose. Inoculation of microorganisms was done by spraying the culture media after the culture of them to soil and cucumber plants, three times during the growth of cucumber at the rate of 10l/ha. The inoculation of microorganisms tended to promote the growth of cucumber plant and increase the yield of it. No sign of significant improvement of soil chemical and physical properties were observed after the harvest of crop. The population of bacteria and actinomycetes tended to be higher in the inoculated plots than in not inoculated plots, while opposite was the case in the population of fungi.