• Title/Summary/Keyword: 개화수

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우리나라 發電용 熱原動機의 發達過程과 展望

  • Choi, Yeol
    • Journal of the KSME
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    • v.22 no.1
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    • pp.62-69
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    • 1982
  • 열원동기에 의하여 발전된 전기로 전동을 켜게된 것을 들지 않을 수 없다. 그후 문명의 이기인 전기는 모두 개화문명의 원동력으로서 어느 분야보다도 먼저 확장되어 갔다. 따라서 발전설비의 열원동기는 그 규모나 출력이나 종류에 있어서 우리나라 열원동기의 선도적 역할을 해왔고 앞 으로도 계속하여 선두를 달리게 될 것이다. 그러므로 발전용 열원동기의 발달과정을 살펴봄으 로써 우리나라 열원동기의 흐름을 짐작하는데 도움이 될 것으로 믿는다.

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Several Treatments of Veronica rotunda Nakai for Pot Cultivation (분화 재배를 위한 둥근산꼬리풀의 몇 가지 처리)

  • Yeon, Soo Ho;Lee, Sang In;Lee, Seung Yeon;Lee, Cheol Hee
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2019.04a
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    • pp.89-89
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    • 2019
  • 둥근산꼬리풀(Veronica rotunda Nakai)은 다년생 초본으로 높은산 정상에서 자라며, 초장은 10~20 cm, 잎의 길이는 2~4 cm 정도이다. 또한, 기부의 잎은 엽병이 불분명하고, 줄기에는 털이 없는 것으로 알려져 있다. 관상소재로 이용되고 있으나, 식물정보는 매우 부족하며, 활용하기 위해서는 재배 연구와 식물에 대한 정보 수집이 필요하다. 이에 본 연구는 둥근산꼬리풀의 관상용 재배 시 적정 차광, 기비, 추비, 왜화제 및 적심 등의 처리 정도를 알아보고자 수행하였다. 재배방법의 확립을 위하여 선행연구에서 육묘한 유묘(2018년 5월 15일에 파종하여 생산)를 7월 16일에 정식하여 10월 15일까지 약 14주 동안 재배하였다. 공통조건은 플라스틱 화분 10호(이색포트, $9{\times}9cm$)에 원예상토를 충진하고, 200구 트레이에 셀 당 4립씩 파종하여 생산된 1셀을 정식하였다. 차광 정도 실험은 0, 55, 75% 차광막을 이용하였으며, 기비는 싱싱코트를 0, 10, 20알 처리하였고, 추비는 hyponex (N:P:K, 4:6:6)를 0, 1000, $2000mg{\cdot}L-1$의 농도로 엽면시비 하였다. 또한, 관상효과 증가를 위해 왜화제는 diniconazole, daminozide를 농도별(각 0, 1000, $2000mg{\cdot}L-1$)로 처리하였고, 적심은 4주차에 1회 처리 유무의 효과를 비교하였다. 연구의 결과, 둥근산꼬리풀에 기비 10알 처리는 생육에 유의적인 차이는 보이지 않았으나, 20알 처리는 무처리와 10알 처리에 비해 절간장, 경직경이 증가하는 결과가 나타났다. 추비는 절간장을 증가시켰으나, 측지수와 마디수는 유의적으로 감소시켰다. 차광처리별로는 55, 75% 차광 모두 무차광에 비해 측지수, 마디수, 엽수 및 개화율을 크게 감소시키는 결과를 보여, 둥근산꼬리풀는 광이 충분한 곳에서 재배하는 것이 적합한 것으로 생각된다. 왜화제의 처리는 종류와 농도에 관계없이 둥근산꼬리풀은 측지수, 마디수, 엽수를 감소시키는 결과를 보였다. 또한 초장이 짧아지고 경직경은 두꺼워졌으나, 유의적인 차이는 없었다. 종류별로는 daminozide $2000mg{\cdot}L-1$ 처리는 무처리에 비해 개화율이 증가하여, 둥근산꼬리풀의 분화용 재배시 daminozide $2000mg{\cdot}L-1$를 처리하는 것이 효과적이다. 적심처리는 무처리에 비해 전반적인 생육 및 개화를 억제하는 결과가 나타났다. 결론적으로 둥근산꼬리풀의 분화용 재배시 광량이 충분한 곳에서 재배하고, 기비와 추비는 절간장을 증가시키며, 측지수, 마디수, 엽수에 큰 차이가 없거나 감소하는 결과를 보여 관상용 재배에 적합하지 않은 것으로 판단된다. 추가적으로 daminozide $2000mg{\cdot}L-1$를 처리하며, 적심처리를 하지 않는 것이 좋을 것으로 생각된다.

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Effect of Preservative Solutions on Flowering and Vase Life of Multiflowered Cut Lily (Lilium longiflorum Thunb.) (일경다화성(一莖多花性) 백합(百合) 절화(切花)의 개화(開花)와 수명연장(壽命延長)을 위(爲)한 보존용액(保存溶液)의 효과(效果))

  • Lee, Jong Suk;Kim, Young Rae;Ku, Ja Hyeong
    • Korean Journal of Agricultural Science
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    • v.10 no.2
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    • pp.249-256
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    • 1983
  • The aspect of flowering was investigated in 'Georgia' cut lilies which had four flowers per stem. Concurrently effects of preservative solutions on longevity, petal length, water uptake and fresh weight of cut flowers were examined. 1. Days of opening of the 1st, 2nd and 3rd flower were 1-2 days, 3-4 days and 5-6days after beginning of holding treatment respectively. But the 4th flower was opened 9-10 days after beginning of holding treatment when the 1st and 2nd flowers were wilting or drying. 2. The later the opening of flower in a stem was, the shorter the longevity of flower became. But the effects of preservative solutions on longevity were gradually increased as the opening of flower was late in a stem. 3. Preservative solutions containing sucrose and $AgNO_3$ or HQ were able to increase petal length and longevity of the 3rd and 4th flowers sufficiently like the 1st and 2nd flowers. 4. Petal length, water uptake, fresh weight and longevity of cut lilies held in preservative solution containing sucrose, $AgNO_3$ and HQ were increased significantly compared with others. Solution containing sucrose alone increased longevity but decreased water uptake remarkably and did not increase fresh weight and petal length effectively compared with the control.

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A Spray Chrysanthemum, 'Secret Pink' with Early Blooming, Long Vase Life, Multi-floret, Single Flower Type, and Pink Petals for Cut Flower (조기개화성, 다화성 분홍 홑꽃 절화용 스프레이국화 '시크릿핑크' 육성)

  • Lim, Jin-Hee;Shin, Hak-Ki;Park, Sang-Kun;Cho, Hae-Ryong;Rhee, Hye-Kyung;Kim, Mi-Seon;Joung, Hyang-Young;Yae, Byeong-Woo
    • Horticultural Science & Technology
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    • v.30 no.1
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    • pp.101-105
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    • 2012
  • 'Secret Pink' was released by National Institute of Horticultural & Herbal Science in 2008. The cross was made between '03B1-23' and 'Sei-Monaco in 2005'. After the evaluation of the characteristics under shade culture in summer and retarding culture in spring and consecutive selection from 2006 to 2008, 'Secret Pink' was selected finality. The natural flowering time of 'Secret Pink' was the middle of October, and it is possible to flower all year round by shade and light culture. It has single type flowers with pink petals. The growth of plant was very vigorous and response time was 6.5 weeks. The diameter of flower was 6.7 cm. Number of flowers per stem and petals per flower were 14.5 and 25, respectively. Days to flowering under the short day treatment was about 50 and its vase life was 25.5 days in autumn season.

Growth and Flowering of Orostachys japonicus A. Berger as Affected by Inflorescence Pinching Time (화서제거 시기가 바위솔의 생장과 개화에 미치는 영향)

  • Jeon, Seung-Ho;Lee, Chang-Woo;Kim, Hong-Young;Shin, Sung-Cheol;Kang, Jin-Ho
    • Korean Journal of Medicinal Crop Science
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    • v.15 no.4
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    • pp.251-255
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    • 2007
  • Floret flowering of a monocarpic plant Orostachys japonicus should be controlled to change its harvest time. The study was done to clarify the effect of pinching time of inflorescence with many florets (Aug. 25, Sept. 8 and 22, Oct. 4) on its growth, morphological characters, and flowering. Night-break treatment of 2 hours at midnight were done since Aug. 25 when afterward samples were taken every 2 weeks to Nov. 4. Growth, morphological and flowering related characters were measured from each sample. Plant height, inflorescence length and number of leaves including bracts showed significant difference between the treatments because they were sharply increased until each pinching time. Stem diameter did nearly same. Leaf and bract, floret, shoot and total dry weights had similar response to the plant height, but stem and root dry ones did similar response to the stem diameter. Most florets were removed by the pinching treatments after formed ones were increased until each pinching time. Few florets were left after the treatment, meaning that night-break treatment after that could be skipped.

Effect of Night-break Treatment on Growth and Flowering of Orostachys japonicus A. Berger (암기중단 처리시기가 바위솔의 생장과 개화에 미치는 영향)

  • Lee, Chang-Woo;Jeon, Seung-Ho;Kim, Hong-Young;Shin, Sung-Cheol;Kang, Jin-Ho
    • Korean Journal of Medicinal Crop Science
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    • v.15 no.4
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    • pp.256-260
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    • 2007
  • Year-round cultivation of a monocarpic plant Orostachys japonicus should be possible in case to controlling floret flowering. To give some information on its year-round cultivation, this study was carried out to examine the effect of night-break treatment time (June 10, Aug. 25) on its growth, morphological characters, and flowering. Night-break treatment of 2 hours at midnight were done since Aug. 25 and heating were made under $20^{\circ}C$ Samples were taken every 4 weeks from Aug. 25. Growth, morphological and flowering related characters were measured from each sample until March 9. Plant height, inflorescence length, number of leaves including bracts and stem diameter were greater in the earlier treatment than in the later one. Leaves and bracts, floret, stem, root, shoot and total dry weights showed the same response as plant height did to the night-break treatment time. Florets were more formed in the earlier treatment than in the later treatment in which they were flowered only on March 9, meaning that its year-round cultivation should be possible under night-break treatment before bolting and heating during winter season.

Effects of Sowing Time on Dry Root Yield and Agronomic Traits of Scutellaria baicalensis Georg Cultivated After Barley (맥후작(麥後作) 직파시기(直播時期)가 황금(黃芩)의 주요형질(主要形質) 및 수량(收量)에 미치는 영향(影響))

  • Kwon, Byung-Sun;Park, Gyu-Chul
    • Korean Journal of Medicinal Crop Science
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    • v.5 no.3
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    • pp.202-205
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    • 1997
  • This study was carried out to determine the effect of sowing time on the flowering, growth and yield of Scutellaria baicalensis Georg, which was collected from Yeochon district, cultivated after barley in the southern coastal areas of Korea. Emergence and flowering dates in the sowing time of June 1 were earlier than those of the other sowing times. In the sowing time of June 1, length and diameter of main stem, number of node per main stem, number of branch per plant and dry weight of stem leaves were greater than those of sowing times of June 10 and June 20. Yield components such as main stem length and diameter, main stem numbers, branches per plant, dry weight of stem leaves, main root length and thickness, number of large root and fine root per plant, and dry weight of root were the highest at the sowing time of June I as the yield of 71.3kg/10a. Optimum sowing time of Scutellaria baicalensis Georg cultivated after barley was June 1 in southern areas of korea.

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Flowering, Fruiting, Seed Fall and Seed Viability of Acer ukurunduense in Mt. Jungwang, Gangwondo (강원도 중왕산 지역에서 부게꽃나무의 개화, 결실, 종자낙하량 및 종자활력)

  • Kim, Gab Tae;Kim, Hoi Jin
    • Journal of Korean Society of Forest Science
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    • v.103 no.2
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    • pp.153-158
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    • 2014
  • To examine the natural regeneration in the natural mixed-broadlived forest, flowering, fruiting, seed-fall, and seed viabilities of Acer ukurunduense Trautv. & C.A. Mey. (AU) were investigated in Mt. Jungwang, Gangwon-do, from 2009 to 2013. The flower of AU consisited many male and bisexual flowers on the raceme (unusual panicle) and the arrangement of two sex morphs are differed for each inflorescence. Flowering dates are differed between sex morph in the same inflorescence. Stamens are stop growing and disappeared after pollinated pistil begin to grow in bisexual flowers, and male flowers have vestial pistil. The flowers of AU might be pollinated by Apis mellifera, Thyris fenestrella seoulensis, Cerambycidae sp., Andrenidae sp. and Ctenophora sp., and had some mechanism to prevent feom self pollination. The number of flower buds per inflorescence is 189 on June 8, and that of young samaras per inflorescence is 41.2 on June 21. At last ripened samaras per inflorescence is reduced 33.4 on September 5. Mean annual seedfall of AU was 6,720 ea/ha (ranged 670~17,930). Rates of sound seeds are highest 43.2%, and those of damaged or decayed seeds are 41.8%,. Those of undeveloped and empty seeds are 10.2% and 4.8%, respectively. Successful regeneration of AU might be in masting year and on the gap sites with proper conditions to germinate and grow. To understand the natural regeneration of the species, Genus Acer, further study on the fruiting habit, pre- and post-dispersal seed viability, and annual variation on these factor should be needed.

Influence of DIF on Factors Associated with Growth of Young Watermelon(Citrullus vulgaris S.) Plant in Controlled Environments (수박의 초기 생장에 미치는 DIF의 영향)

  • 권성환
    • Journal of Bio-Environment Control
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    • v.5 no.1
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    • pp.1-6
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    • 1996
  • For reducing planting distance in greenhouse grown watermelon(Citrullus vulgaris S.) this experiment was carried out to study the effect of DIF on stem elongation and growth. Day temperatures ranged from $25^{\circ}C$ to 35$^{\circ}C$ : night temperatures ranged from $25^{\circ}C$ to 35$^{\circ}C$ at 5$^{\circ}C$ interval. Stem elongation, leaf size, dry weight and flowering were influence by day and night temperatures. Stem elongation and length of internode decrease with increasing night temperature at same day temperature. The optimums for number of leaves categories was with day at 35$^{\circ}C$, and flower production was the lowest at $25^{\circ}C$. Total leaf area meter was maximized at 35/30(DT/NT), but for size pet one leave was the largest 25/25(DT/NT). Responses of leaf size per leaves were similar to that of internode length, with maximum day and night at $25^{\circ}C$. Total plant dry weight was the highest 35/30 (DT/NT) and minimum occurring at 25/30(DT/NT). The shoot/root ratios of dry weight Increased with day temperature up to 3$0^{\circ}C$ and were the highest with night at $25^{\circ}C$. Chlorophyll contents decreased with decreasing day and night temperature.

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Classification of Ecotypical and Maturing Groups of Perilla varieties (들깨 품종의 생태형과 성숙군의 분류)

  • Ik-Sang Yu;Eun-Woong Lee
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.14
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    • pp.133-137
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    • 1973
  • In order to classify the ecotypical and maturing groups 136 Korean local and 4 Japanese Perilla varieties were sown at Suwon on May 20, 1972, and investigations were made on days to flowering, days to maturing and growth duration. Results obtained were summarized as follows: 1. Ecotype was classified from 6 groups with combination of the long and short duration from sowing to flowering and maturing period. The classified symbols of groups were Ia, Ib, IIa, IIIa, and IIIb. I: long duration. to flowering II: medium duration to flowering III: short duration to flowering a: long duration to maturing b: short duration to maturing Korean local varieties were distributed 3 ecotypes of IIa, IIb and IIIa, however, Japanese varieties did 2 ecotypes of IIa and IIb, respectively. 2. Maturing group was classified from 3 groups with long (I), medium (II), and short (III) growth durations. Korean local varieties belong to II and III groups but Japanese varieties belong to I and II groups, respectively. 3. Three were highly significant positive correlation (0.685) between ecotypical and maturing group. Ecotype was more related with days to flowering and growth duration, however, maturing group was related with days to flowering, days for maturing, and growth duration. Korean local varieties, more distributed into ecotype than maturing group, were attributed to differences of environmental conditions and cultural practices at different provinces.

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