• Title/Summary/Keyword: growth stage

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Influence of CGMMV Infection Times on Growth and Quality of Watermelon and Cucumber (CGMMV 감염시기가 수박과 오이의 생육 및 품질에 미치는 영향)

  • Ko, Sug-Ju;Lee, Yong-Hwan;Lee, Tae-Seon;Yang, Kwang-Yeol;Park, Jin-Woo;Choi, Hong-Soo
    • Research in Plant Disease
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    • v.10 no.1
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    • pp.48-52
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    • 2004
  • We investigated the effect of infection time of CGMMV on the growth and quality of watermelon and cucumber plants. The effect (damages by CGMMV) was estimated on the watermelon where CGMMV had been inoculated at different growth stages, vegetative (transplanting stage, vegetative growth stage) and reproductive growth stage (fruiting stage and fruit hypertrophy stage). In the case of cucumber, CGMMV was inoculated at transplanting stage and Erst flowering stage, respectively. When watermelon was infected with CGMMV at vegetative growth stage, vine length, internode length, leaf area, and fruit weight of the plants largely decreased compared with control plants, while the infected plant growth was not very different from control plants when it was infected at reproductive growth stage. Brix of the fruit of watermelon also decreased when the plants was infected with the virus earlier than fruiting stage. The occurrence of 'Pisubag', internal discoloration and decomposition of watermelon fruits, tended to be increased as earlier infection time with CGMMV In the case of cucumber infection time with CGMMV did not influence earlier growth of the plants, but did later growth showing that plant height, vine length, internode length, number of leaf, leaf wide, and leaf length of the plants decreased as infection time became to be earlier.

Effects on Dry Matter Production and Growth of Zoysia japonica under the Light Environment I . Effect of Shade on Growth in Zoysia japonica (광환경이 잔디(Zoysia japonica)의 물질생산과 생장에 미치는 영향 I.차광율이 Zoysia japonica 생장에 미치는 영향)

  • 도봉현
    • Asian Journal of Turfgrass Science
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    • v.5 no.2
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    • pp.95-114
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    • 1991
  • This paper was designed to estimate the interaction of the first productivity, light conditions and to analyze the ecophysiological productivity, growth characteristics grown under various shading conditions in Zoysia japonica . The results summarized this experiment were as follows; 1.After transplanting the grass, increasing rate of leaf number and total leaf length was remarkahly high at the early growth stage in the control and the 30% shading plot. 2.The increasing rate of leaf area ratio (LA R) in all the experimental plot was remarkable high at the early growth stage after transplanting the grass. Especially, the control and 30% shading plot in compared with another plots, were remarkably high at rate of leaf area. 3.The length and the node number of rhizome in the control and 30% shading plot were also high and the difference was significantly large by the growth stage. 4.Chlorophyll content was very high at 36days after transplanting and then decreased. Increasing rate of shade resulted in its low content. The rate of chlorophyll a to b was decreased by in-creasing rate of shade. 5.The content of soluble sugar in the control and 30% shading plot was low at the early growth after transplanting and high at the late growth stage. Its content in the plot of 70% shading was remarkably low throughout the growth stage. 6.The increasing rate of standing plant in all the experimental plots was high at the early growth stage after transplanting. Increasing rate of shade was typically low through all the growth stage.

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Influence of Drought Period in Different Growth Stage on Agronomic Characters in Sesame (참깨 생육기별 한발기간이 주요형질에 미치는 영향)

  • 최형국;김용재;구자옥;최원열;김학진
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.35 no.4
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    • pp.295-303
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    • 1990
  • In this study, drought period when important agronomic characters of sesame plant is critical, was examined at different growth stages. Plant death by drought started at 40 days after drought in vegetative growth stage and 20 days, in reproductive growth stage. Obserbed by growth stage, drought damage in reproductive growth stage was more in jurious than vegetative growth stage. All the important agronomic characters was refreshed until 40 days and 20 days after drought in vegetative growth stage and reproductive growth stage respectively, but it could berefreshed after those times. Decrease rate of yield by drought ranged from 29 to 80% in vegetative growth stage and from 49 to 85% in respective growth stage. All the important agronomic characters except rate of ripeness showed positive association with grain yield under drought condition. Oil content in grain was decreaced by drought but composition of fatty acid was not affected by it.

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Differences in KSFs, Environments, CEO Roles, and the External Linkages Among Korean Ventures at Different Growth Stages (우리나라 벤처기업의 성장단계에 대한 실증조사 : 핵심성공요인, 환경특성, 최고경영자 역할과 외부자원 활용)

  • 김영배;하성욱
    • Journal of Technology Innovation
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    • v.8 no.1
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    • pp.125-153
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    • 2000
  • This study empirically examined the relationships between the growth stage of ventures and their business characteristics such as KSFs, environmental attributes, CEO roles, and utilization of external resources, based on data from 2,515 Korean ventures. ANOVA results of this study revealed that 1) Key success factors appeared different across the different growth stage of Korean ventures. Financial resources were most critical in the early stage of growth, while the foreign technology licensing appeared to be most important for the success of ventures at later growth stage; 2) As the Korean ventures grew, their environments became more dynamic and hostile; 3) Strategic and external activity roles of top management were critical in younger ventures, while roles for marketing and production were important in older ventures; and 4) Utilization of external resources were more frequent at the later stage of ventures than at the early stage of growth. Based on the research, this study offered several managerial, theoretical, and policy implications.

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Effect of Temperature Associated with Early Growth Stimulus on Shortening of Heading Dates in Rice

  • Song, Moon-Tae;Lee, Jeom-Ho;Cho, Youn-Sang;Hwang, Hung-Goo
    • Plant Resources
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    • v.5 no.2
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    • pp.155-160
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    • 2002
  • The heading date is known to be controlled by two kinds of genetic constituent, photosensitivity and basic vegetable phase. For the latter, the effect of temperature in early growth period is critical to determine the shortness of vegetative growth periods in plant's life. A phytotron experiment on 55 rice cultivars, consisting of two ecotypes of rices, indica and japonica, was conducted at high and low temperature treatments at early growth stage to investigate the possible role of plant growth stimulus by high temperature to associate with shortening of heading date. The high temperature during the early growth stage stimulated the rice growth as measured by plant height with much difference of the growth response between indica and japonica. The conclusive finding that these growth stimulus in early growth stage was highly correlated with the acceleration of heading is, more or less, correlated with the heading of the late growth stage although we could not conclude the genes for early plant growth stimulus by high temperature is the same genes as the genes for accelerating of heading in the late growth stage of plants.

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A LONGITUDINAL STUDY ON THE INTERRELATIONSHIP BETWEEN THE GROWTH CHANGE OF THE MANDIBLE AND DEVELOPMENTAL AGE OF GROWING GIRLS (성장기 소녀에서 하악골 성장 변화와 발육 연령의 상호 관계에 대한 누년적 연구)

  • Kim, Young-Joon;Sohn, Byung-Wha
    • The korean journal of orthodontics
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    • v.22 no.3 s.38
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    • pp.603-615
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    • 1992
  • This study was undertaken to investigate the interrelationship between the growth change of mandible and the developmental age of growing girls in the longitudinal data from 7 years to 15 years. The data were obtained from maturation stage of cervical vertebrae through the serial lateral cephalogram, height increment records which was taken at one year interval, menarche date through interview. On the basis of findings of this study, the following conclusions were obtained. 1. In general the growth of mandible (Ar-Pog, Ar-Go, Go-Pog) showed two peaks of growth velocity. 2. The maximum growth of mandible (Ar-Pog, Ar-Go, Go-Pog) almost appeared between stage 3 and stage 4 in maturation of cervical vertebrae. 3. It showed the tendency that the maximum increment of height appeared faster than that of mandible (Ar-Pog, Ar-Go, Pog-Go). 4. The maximum growth of height almost appeared between stage 2 and stage 3 in maturation of cervical vertebrae. 5. It showed the tendency that the menarche appeared later than the maximum growth of mandible (Ar-Pog, Ar-Go, Pog-Go). 6. The menarche almost appeared at stage 4, stage 5 in maturation of cervical vertebrae.

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Study on Growth Responses of Soybean in Paddy Field for Establishing Environment-Friendly Cropping System (친환경 논 밭 윤환 콩 재배법 확립을 위한 논 콩 재배시 품종별 생육반응 연구)

  • Kim, Yong-Wook;Cho, Joon-Hyeong
    • Korean Journal of Organic Agriculture
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    • v.12 no.4
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    • pp.437-450
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    • 2004
  • This study was conducted with two objectives ; one was to select the suitable soybean cultivars for cultivation in paddy field and the other was to establish the environment-friendly rotational cropping system of soybean instead of rice in paddy field. In order to evaluate growth adaptation and yields, Eve soybean cultivars were cultivated in Yeoncheon, Keonggi province, with two cultivation methods such as level row and high ridge. Growth of the top plants, such as stem length, number of branches, diameter of stem, were higher in high ridge than in level row, however, the differences among the cultivars were bigger than those between the cultivation methods. Dry weight of top plant was significantly different among the cultivars during whole growth stages, however, it was higher in level row than in high ridge at V5 stage while it became higher in high ridge as growth progressed. Roots were more developed in high ridge than in level row during whole growth stages. T/R ratio in level row was higher than that in high ridge. During whole growth stages, significant differences were observed among the cultivars in growth and yields in each cultivation method and yields of Eunhakong was the highest. In results, number of nodules and T/R ratio at V5 stage, number of pods at R2 stage, and number of seeds and T/R ratio at R5 stage had highly correlated with yields, respectively.

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Seasonal Growth Chrateristics of Perennial ryegrass varieties II. Varietal differences in summer growth (Perennial Ryegrass 품종의 계절적 생육특성 II. 여름철 생육의 품종간 차이)

  • 김성규;이주삼;조익환
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.12 no.1
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    • pp.6-11
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    • 1992
  • This experiment was carried out to study the biological yields(BY) of varieties by the developmental growth stages and shoot weight(SHW), leaf area(LA), root dry weight(RW), number of tillers(NT), shoot and root ratio(S/R), weight of a tiller(WT) as factors of yield components with 5 varieties of perennial ryegrass. The results are summarized as follows; 1. The biological yields in summer were about 115 of spring yield. 2. The biological yields of Manhattan were the highest until1 third developmental growth stage among perennial ryegrasses, and those for Maprima and P-2 varieties were the highest in the following stages. In terms of shoot dry weight, the similarly tendency appeared in the fifth developmental growth stage. 3. The shoot dry weight increased highly with the root dry weight. 4. The Tempo variety of biological yield was generally low but the weight of a tiller was the highest. 5. The highest increasing stage of biological yields was between fifth and sixth developmental growth stage, but the lowest increasing stage of biological yields was between first and second developmental growth stage, respectively. The dominant factors of biological yields were influenced to shoot and root dry weight.

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Influence of Water Stress on Growth and Yield in Safflower(Cartamus tinctorius L.) (단수 시기가 홍화의 생육과 수량에 미치는 영향)

  • Kim, Se-Jong;Park, Jun-Hong;Kim, Jae-Chul;Park, So-Deuk;Song, Kwan-Chul
    • Korean Journal of Soil Science and Fertilizer
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    • v.39 no.5
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    • pp.303-306
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    • 2006
  • This experiment was investigated the influence of water stress in growth and yields of safflower. The water stress treatment was early growth stage(Mar. 20~Apr. 18), middle growth stage(Apr. 29~May 28) and last growth stage(Jun. 8~Jul. 7) for 30 days, respectively. Stem length of plant was 127 cm in normal irrigation(control) state and that of growth middle stage at drought state was 96 cm, to be shorted more 31 cm than that of normal irrigation state, also other growth rate of plant was decreased, relatively. Number of effective flower bud per $m^2$ was 224 ea in normal irrigation state, 114 ea in growth middle stage at drought state. Yield of seed at drought state decreased 37% and 13% in growth middle stage(222 kg/10a) and last stage(307 kg/10a) than 353 kg/10a in normal irrigation state. According to the result, it could be estimated that optimum irrigation time(0.05 MPa) was 23days after non-rainfall at early growth stage(from sowing seed time to 30 days after sowing seed), 10 days in middle growth stage(41-70 days after sowing seed) and 9 days in last growth stage(81-110 days after sowing seed), to prevent the damage of drought.

The Comparison of Health Promotion Behavior, Post Traumatic Growth and Quality of Life according to Stages of Survivorship in Patients with Female Genital Neoplasm (부인암 환자의 생존단계별 건강증진행위, 외상 후 성장 및 삶의 질 비교)

  • Lee, Eun Sil;Park, Jeong Sook
    • Korean Journal of Adult Nursing
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    • v.25 no.3
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    • pp.312-321
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    • 2013
  • Purpose: The purpose of this study was to compare health promotion behavior, post-traumatic growth and quality of life according to the stages of survivorship in patients with female genital neoplasm. Methods: Data were collected from August 1st, 2011 to September 31st 2011 from 142 gynecologic cancer patients who completed treatment or were treated at an out-patient clinic. The instrument were HPLP developed by Walker, Sechrist & Pender, PTGI developed by Tedeschi & Calhoun, and Korean C-QOL. Results: Health promotion behavior scores were significantly higher in the acute survival stage than the extended survival stage. Post-traumatic growth score was higher in the acute survival stage than the extended survival stage. The quality of life scores were higher in the lasting survival stage than the extended survival stage. Conclusion: Gynecological cancer patients in the extended survival stage reported low scores of health promotion behavior, post-traumatic growth and quality of life. Intervention needed to be developed to improve health promotion behavior, post-traumatic growth and quality of life for patients with female genital neoplasm in the extended survival stage.