• Title/Summary/Keyword: 개화수

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Effects of Shading, Chilling and Gibberellin Treatments on the Flowering of Azalea (Rhododendron spp.) (차광, 저온 및 지베렐린 처리가 Azalea의 개화에 미치는 영향)

  • Chung, Hae-Joon;Yoo, Bong-Sik
    • The Journal of Natural Sciences
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    • v.10 no.1
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    • pp.63-71
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    • 1998
  • This research was conducted to control flowering of azalea (Rhododendron spp.) by shading, chilling and gibberellin treatments. Higher shading among treatments resulted in extended duration of flowering (DF) and increased number of flowers (NF) in all varieties tested. Number of days to flower (NDF) was increased in 'Ripple' by shading treatment, but this was not affected in other was vice verse in 'Reinhold Ambrosia' resulting in decreased NDF. Chilling treatment followed by high shading increased NDF and shortened DF in 'Inga' and 'Ripple', but that extended NDF and DF and increased NF in 'Reinhold Ambrosia'. In flowering response to $GA_3$ resulted in decreased NDF and increased NF. These results indicated that treatments of shading, chilling and gibberellin to azalea extended DF and increased NF, but NDF appeared different according to varieties.

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Characteristics of Flowering and Bolling in Cotton (목화의 개화 및 결삭 특성)

  • 박홍재;김철우;김상곤;정동희
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.38 no.3
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    • pp.201-207
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    • 1993
  • This study was carried out to ascertain the flowering and boiling habits in conditions of vinyl mulched cultivation. The effects of vinyl mulching cultivation in cotton was early flowering. The flowering period was no more than 26 days and shedding of flower bud was lower. The total boll setting rate to flower number was about 38%. The number of flowering plants was rapidly increased until Aug. 8, then later was decreased, the period of the highest flowering occured was for 5 days from Aug. 6 to Aug. 10. Boll setting was increased that the flowers opened before July 30, then the later flowers was tended to decrease belling in spite of the increased flowering. However flower bud shedding had a tendency to decrease after the highest boiling period. The effect of weather, max. temperature and hours of sunshine on flowering days were highly positive significant correlation. Minimum temperatures, high air humidity and amount of rainfall had a negative significant correlation. The demanded days to flowering on the same internode in each fruiting branches was taken average 1.2 days, these days among the fruiting branches of the same internode was 3.6 days.

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Effects of Fertilizer Levels and Plant Densities on Flowering and Bolling in Cotton (시비량과 재식밀도가 목화의 개화 및 결삭에 미치는 영향)

  • 김상곤;박홍재;성병열;정동희
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.37 no.5
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    • pp.436-441
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    • 1992
  • This study was carried out to discuss the influences of the different fertilizer levels and plant densities on the flowering and balling in cotton in Mokpo Branch Station, Crop Experiment Station in 1991. The cotton flowered 67% before Aug. 25 which is the limit date of picked-cotton harvest, and the ratio of flowering for stalk-cut cotton was 30%. The 1.5 times fertilizer levels and the 70cm row density had more flower buds, flowers and bolls per m$^2$ than any other treatment plot. The crop growing was bad in dense planting due to the nutrient deficiency. The flowering ratio to flower bud was about 70%, and the balling ratio to flower numbers was about 48%. The bolling ratio was lower in the case of more flower number. The shedding ratio of flower buds was about 30% in average and showed increasing tendency by dense planting. It was observed that the higher ratio of bud shedding tended to accompany with shedding the lower ratio of boll shedding.

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Studies on the Effect of Planting Time on the Flowering of Peanut (Arachis hypogaes L.) (파종기이동이 땅콩의 개화에 미치는 영향)

  • 서대석;조재성;최창열
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.25 no.4
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    • pp.86-90
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    • 1980
  • To define the effect of planting time on the flowering of the peanut varieties, Cheonyup banlip and 9 other varieties were planted seven times at 15 day interval from April 15. The days to flowering of all peanut varieties were shortened proportionately with delayed planting time. The significant negative correlation (r =-0.86**) was recognized between the shortening rate of the days to flowering by later planting time and the days to flowering of peanuts planted at standard seeding time. The short day treatment did not have any effect on the chance of the days to flowering of each variety. A significant negative correlation was recognized between the number of flowers and the days to flowering of the peanut varieties planted at standard seeding time.

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Flowering and Pod Setting Characteristics of Cassia tora L. Grown under Different Planting Time (파종기이동에 따른 결명(Cassia tora L.)의 개화의 결협특성)

  • Kwang-Ho Kim
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.34 no.3
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    • pp.246-251
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    • 1989
  • A medicinal legume crop, Cassia tora L., was grown with four different seeding dates in 1986 field condition to find the flowering and pod setting characteristics. Initial flowering date and flowering duration were almost same between plants sown from April 20 to May 30, but those of plants seeded at June 20 were significantly delayed and shortened. Last flowering date, however, was not different between plants sown from April 20 to June 20. C. tora plants showed indeterminate flowering habit, and bloomed vigorously from fourth date after initial flowering. Numbers of flowers, ovules and pods per plant were decreased along with delaying seeding date, and ovule to flower ratio and pod to flower ratio were greatly decreased in June 20 seeding plot. Flowers bloomed on second week from initial flowering showed the highest number of ovules and pods, and flowers bloomed after early September did not develop to matured pods. Maximum values of pod length, number of seeds per pod and 1000-grain weight were obtained from flowers bloomed on second week from initial flowering of plants sown from April 20 to May 30, and first week in June 20 seeding plot.

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Effects of Pre-sowing Seed Treatment with $GA_3$ and IAA on Flowering and Yield Components in Peanut (땅콩 종자의 $GA_3$ 및 IAA 침지처리가 개화 및 수량구성요소에 미치는 영향)

  • 이효승
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.35 no.1
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    • pp.1-9
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    • 1990
  • This experiment was carried out to understand the effect of pre-sowing seed treatment by GA$_3$ and IAA on flowering and characteristics of yield component in peanuts. Peanut seed was treated by soaking in 10, 50, 100ppm of GA$_3$ solution, and 50, 100, 200ppm of IAA solution. Treatments of GA$_3$ and IAA resulted 7-5 days earlier emergence and 11-17days shorter of the flowering date compared with the untreated control. By soaking treatments with IAA in 100ppm and GA$_3$ in 100ppm, accumulated flowers were increased at early growing stage of 30 days after flowering compared with untreated control. By soaking treatments with IAA in 100ppm and GA$_3$ in 100ppm, main stem length, branch length and internode of main stem showed to flourish at investigation from early growing stage to 3 days before harvesting.

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The Ways of Discourses in the Novels and Editorials During the Period of Korean Enlightenment (개화기 소설과 신문 사설에 나타난 담화방식)

  • Eum, Yeong-Cheol
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2015.07a
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    • pp.226-227
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    • 2015
  • 본 논문에서는 개화기 소설과 신문사설에 나타난 담화방식을 연구한 것이다. 개화기 소설과 신문 사설은 당시 대표적인 담론 매체였다. 대중들에게 쉽게 전달할 수 있는 담화방식은 개화기소설의 경우 대화체 토론체 연설체 담화방식으로 나타났다. 이는 신문 사설이 갖고 있는 한계인 설명 추상보다 진일보한 것으로 당대의 시대정신을 잘 구현한 것으로 볼 수 있다.

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Effect of Ethephon, Paclobutrazol, and Uniconazole on Growth and Flowering of Potted Yarrow, Achillea millefolium 'Cerise Queen' (Ethephon, Paclobutrazol과 Uniconazole 처리가 분화 서양톱풀의 생장과 개화에 미치는 영향)

  • Nam, Sang-Yong;Kwon, O-Dal;Kim, Sun-Dong;Park, Sun-Mi;Soh, Chang-Ho
    • FLOWER RESEARCH JOURNAL
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    • v.17 no.4
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    • pp.303-307
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    • 2009
  • The purpose of this study was to investigate the effects of ethephon, paclobutrazol, and uniconazole on the flowering of potted Yarrow (Archillea millefolium). Each plant growth regulator was sprayed two times before stem elongation period of yarrow. The tallest was 45.7 cm at $1000mg{\cdot}L^{-1}$ ethephon and the shortest was 11.1 cm at 20 uniconazole. Uniconazole delayed flowering and decreased the number of flowers. Both uniconazole at 20 ppm and paclobutrazol at 200 ppm decreased the number of florets to 90.0% and 43.6% of control, respectively. In ethephon, number of florets was increased 34.1% compared with control. In addition, ethephon and paclobutrazol increased the number of mean auxillaly flowers to 28.6% and 23.5% of control, respectively. On the other hand, uniconazole decrease the number of auxillary flowers to 55.3%. Thus, paclobutrazol was recommended as a suitable plant growth regulator for yarrow pot plant production.

생물계절변화를 이용한 온난화의 영향에 관한 연구

  • Im, Jeong-Seop;Kim, Hae-Dong;Kim, Sang-U;Park, Myeong-Hui
    • 한국지구과학회:학술대회논문집
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    • 2010.04a
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    • pp.80-80
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    • 2010
  • 본 연구에서는 식물의 개화시기가 기온에 민감하게 반응한다는 것에 근거하여 54개의 기상관측지점을 선택하고 1988년부터 2008년까지 21년간 벚꽃 개화일의 시계열적 변화를 분석하였고 이들과 3월 평균기온과의 상관관계를 조사하였다. 그리고 엘니뇨와 라니냐 시기에 기온과 벚꽃개화일의 변화 경향과 도시화에 의한 기온변화가 벚꽃 개화일에 미치는 영향을 대도시와 교외도시와의 비교를 통해 알아보았다. 또한 경험직교함수(EOF) 분석을 통하여 벚꽃개화일의 시 공간 분포를 알아보았다. 그 결과는 다음과 같다. 첫 번째, 3월 평균기온 분석을 통해 1988-2008년 사이에 한반도의 기온은 평균적으로 $0.13^{\circ}C$ 증가하였음을 확인할 수 있다. 그리고 평균적으로 남해안이 동해안과 서해안보다 평균기온이 높게 나타났으며, 서해안이 가장 낮은 평균기온을 보였다. 그리고 내륙지역의 경우 위도에 따라 평균기온이 달랐으며, 위도가 낮아질수록 평균기온이 크게 나타났다. 하지만 모든 지점에서 유의하지는 않았다. 두 번째, 벚꽃개화일의 변화를 보면, 개화일은 시간이 지날수록 빨라지는 경향을 보였다. 그리고 벚꽃개화일의 분포를 보면 위도가 낮은 지역이 개화일이 빨랐으며, 해안지역 중에서는 남해안, 동해안, 서해안 순이었다. 세 번째, 2월, 3월, 4월의 평균기온과 벚꽃 개화일의 상관관계 분석결과 3월 평균기온이 벚꽃개화일과 상관관계가 가장 높았다. 네 번째, 엘니뇨가 발생한 해에는 한반도의 기온이 상승하는 경향을 보였으며, 동시에 벚꽃개화일도 빨라졌다. 다섯 번째, 대도시가 교외도시에 비해서 기온상승이 높았으며, 벚꽃개화일도 빠르게 나타났다. 마지막으로, 경험직교함수(EOF) 분석 결과 3월 평균기온과 벚꽃 개화일의 1mode 시계열 패턴이 비슷하다는 것을 확인하였다. 또한, 1996년을 기준으로 이전에는 개화일이 느려지고, 이후에는 빨라지는 패턴을 보였다.

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Flowering Habit, Pollination Patterns and Seed Setting in Astragalus membranaceus Bunge (황기의 개화습성과 수분양식 및 결실 특성)

  • 김영국;손석용;성낙술;이봉호
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.45 no.3
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    • pp.171-175
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    • 2000
  • This study was carried out to obtain the basic informations on the flowering habit, pollination patterns and seed setting in Astragalus membranaceus. The first flowering appeared at the 20-22 node on main stem and there is the indeterminate inflorescence that the flowering progress developed toward the tip of the main stem and also toward the tips of branches. According to the flowering time, the number of peduncles were increased in early of Aug. Then, the number of bearing pods and that of seed setting were increased at that time. The length of peduncles with small flower was 6.6-7.3cm, and the number of small flowers were 13-17 per peduncles. The percentage of seed setting was 30-45% per peduncles and seeds were 4.8-5.3 per pod in peduncles. On 30 days after pollination, the pod was developed with the length about 3.8cm and the width about 8mm and the seeds were 7.3per pod. According to pollination treatment, wrapping sotted no seeds and the artificial pollination sotted seeds . about 5% in late of jul. to late of Aug. but increased about 13% of seed set after early of Sep. in A. membranaceus.

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