• 제목/요약/키워드: internode

검색결과 271건 처리시간 0.025초

영상처리에 의한 식물체의 형상분석 (Analysis of Plants Shape by Image Processing)

  • 이종환;노상하;류관희
    • Journal of Biosystems Engineering
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    • 제21권3호
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    • pp.315-324
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    • 1996
  • This study was one of a series of studies on application of machine vision and image processing to extract the geometrical features of plants and to analyze plant growth. Several algorithms were developed to measure morphological properties of plants and describing the growth development of in-situ lettuce(Lactuca sativa L.). Canopy, centroid, leaf density and fractal dimension of plant were measured from a top viewed binary image. It was capable of identifying plants by a thinning top viewed image. Overlapping the thinning side viewed image with a side viewed binary image of plant was very effective to auto-detect meaningful nodes associated with canopy components such as stem, branch, petiole and leaf. And, plant height, stem diameter, number and angle of branches, and internode length and so on were analyzed by using meaningful nodes extracted from overlapped side viewed images. Canopy, leaf density and fractal dimension showed high relation with fresh weight or growth pattern of in-situ lettuces. It was concluded that machine vision system and image processing techniques are very useful in extracting geometrical features and monitoring plant growth, although interactive methods, for some applications, were required.

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은행나무 유직물의 줄기에서 유관동문 형성층의 발생과 미세구조 (Development and Ultrastructure of Interfascicular Cambium in Stem of Ginkgo biloba Seedling)

  • Soh, Woong Young
    • Journal of Plant Biology
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    • 제38권3호
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    • pp.281-288
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    • 1995
  • The progressive differentiation of interfascicular cambium from residual meristem in the first internode of Ginkgo biloba seedlings was elucidated by light and electron microscopy. The cells of residual meristem were small and homogeneous and heterogeneous in their arrangement but those of the adjacent cortex and pith were large and homogeneous. Some interprocambial residual meristem progressively became elongated and vacuolated during the process of the differentiation. In tangential section, residual meristem composed of long and short cells. The eventual interfascicular cambium had long fusiform initials and short ray initials. Storage materials in the cells progressively disappeared from the interprocambial residual meristem and were absent in early interfascicular cambium. Both the radial and tangential walls of cells of the interprocambial residual meristem were almost the same, but the radial wall became progressively thicker than the tangential wall during differentiation of interfascicular cambium. From these results, it is clear that interfascicular cambium is gradually differentiated from residual meristem.

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Cluster분석에 의한 버어리종 담배품종의 분류 (Varietal Classification on the Basis of Cluster Analysis in Burley Tobacco of N. tabacum L.)

  • 안대진;김윤동
    • 한국연초학회지
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    • 제5권2호
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    • pp.25-32
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    • 1983
  • To obtain basic information on the breeding of burley tobacco, classification of 41 varieties was carried out by using the cluster analysis of correlation coefficients and taxonomic distance based on twenty-one agromonic characters. Eight characters, such as days to flowering, length of flower axis, internode length, leaf length, yield, leaf angle to stem, vein angle to midrib and plant height, were useful in monothetic classification. Forty-one varieties were classified into four groups (I, II, III and IV) with weighted variable group method (WVGM ) and weighted jai. group method(WPGM), whereas the results classification of 33 varieties among them by WVGM were coincident with the results by WPGM. As for the characteristics of each group, group I related to late maturity, tall height and high yield, group II related to intermediate maturity, tall height and low yield, group 19 related to early maturity, intermediate height and low yield, and group W related to early maturity, short height and intermediate yield.

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Morphological Characters of Panicle and Seed Mutants of Rice

  • Kang Sang-Gu;Pandeya Devendra;Kim Sung-Soo;Suh Hak-Soo
    • 한국작물학회지
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    • 제51권4호
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    • pp.348-355
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    • 2006
  • Phenotypes of panicle, hull and seed of mutant rice (Oryza sativa L.) were characterized. Panicle mutants were classified in 4 groups with their internode length of main rachis, primary rachis, secondary rachis and pedicel. Hull and seed mutants were grouped into 12 based on their mutant characters in shape, size and color of seeds. These natural and spontaneous mutant collections showed distinct phenotypes to wild type rice. This might be useful for the identification of the functions of genetic factors in the Mendelian inheritance.

수도두간변이계통의 형태 및 규산함량에 관한 연구 (Morphological Observation and Silicate Content of Short Culm Mutants in Rice)

  • 한창열
    • Journal of Plant Biology
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    • 제14권3호
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    • pp.29-35
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    • 1971
  • Various types of short culm rice mutants were obtained by means of gamma-ray irradiation. In the present paper morphological observation and analysis of silicate content of the mutants are reported. 1. Short culm type had more useful characters than bushy and dwarf types. 2. In short culm and bushy types the number of nodes both above and under ground was similar to the mother varieties, while in dwarf type it decreased. 3. In short culm types the variation of length of above-ground culm and internodes tended to vary relattive to the mother varieties. 4. Positive correlation was found between culm length and the first and fourth internode length in short culm type. 5. Silicate content increased in short culm type-the increment being variety specific.

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한국에 분포하는 더덕의 형태적 특성과 세포독성 Screening Test (Morphological Characteristics and Cytotoxic Screening Test of codonoposis lanceolata in Korea)

  • 김학현
    • 한국자원식물학회지
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    • 제11권2호
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    • pp.168-172
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    • 1998
  • The morphlogical characteristics and cytotoxic acitivity for14 local varieties fo Codonopsis lanceolata collected from Korea were examined to get basic data for breeding and selection of good cultivars. Plant height ranged from 197.2 cm to 253.2 com, that from Beakunsan(No.11) was the highest and and that form Samcheok(No.5) was the lowest. Generally, plant height of those form northern area of Korea tends to be shorter than those from Southern area. Leaf width and length of that form Husando (No. 12) was the largest While that form chejudo(No.4) was the smallest and those from other areas showed no significant difference. As to the number of branches, that form Yanggu(No.1) was theleast and those from other areas did not show Chejudo(No.14) were the heaviest. Among 14 varieties tested, Heongseong(No.3) and Huksando(No.6) exhibited strong cytotoxicity , which showed 45.0 an d62.0$\mu\textrm{g}$. $m\ell$ respectively.

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한국잔디(Zoysia japonica Steud.)의 분지 발달양상과 광합성기관의 전자 현미경적 구조에 관한 연구 (Studies on the Development of Branch Patterns and the Electronmicroscopic Structure of Photosynthetic organs in Zoysia japonica Steud.)

  • 장남기;김형기;유준희;김용진;임채성
    • 아시안잔디학회지
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    • 제1권1호
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    • pp.42-48
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    • 1987
  • This study was carried out to elucidate the physiological and ecological mechamism of the branch pattern and electronmicroscopic structure of photosynthetic organs in Zoysia japonica Steud. The angles between the internodes of rhizome and the branches of Z.iaponica were changed from 0 to 52 degrees. The rhizomes tended to branch from the 3th node to the 10th node. When the terminal bud was damaged by various environmental factors, the initial branching formation was appeared immediately to the 4th node. The internode growth of the rhizome started from the beginning of April and continued to the end of Octobor. It became evident that there is a division labor between two different kinds of photosynthetic cells of mesophyll and bundle sheath tissues in Z.japonica The thick-walled bundle sheath cells surrounds the leaf vascular bundles as the Kranz type and separates them from the mesophyll cells.

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The Rice Growth and Yield for Organic Rice Production on Pot Seedling type

  • Kwon, Young-Rip;Moon, Young-Hun;Sharma, Praveen Kumar;Kim, Dae-Hyang;Jee, Hyeong-Jin
    • 한국유기농업학회지
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    • 제19권spc호
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    • pp.135-138
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    • 2011
  • In traditional organic rice culture practices, control of weeds is a big problem. This study was conducted to increase the rice production. Results showed that Plant height, SPAD, root length and weight were higher in pot raised seedling than broadcasting method except number of panicles. High plant density caused reduction in plant height, number of culm and chlorophyll content of the rice. No lodging was observed in both methods. Thickness of third internode and culm length was more in pot raised seedlings at both sites. When organic material was used rice yield increased by 3.81%. Higher rice production (10%) was recorded in the fields planted with pot raised seedlings. From the above study it could be conclude that the pot raised seedlings perform better than the seedlings raised by broadcasting methods.

토양의 답압에 대한 맥류의 생육반응 (Reaction of Growth of Barley to Soil Stamping)

  • 서형수;태전보부
    • 한국작물학회지
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    • 제26권3호
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    • pp.239-242
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    • 1981
  • 토양의 답압이 맥류의 생육에 미치는 영향을 조사하여 다음과 같은 결과를 얻었다. 1. 토양의 답압에 의하여 초형은 포포형으로 되고 초장의 신장은 억제되며 분벽수가 증가하고 뿌리는 근수, 근경이 증대하며 심근성으로 되고 근중이 증가하였다. 2. 토양의 답압에 의하여 엽연소 함량이 높아지고 절단엽편의 수분감손량도 증가하였다. 3. 토양의 답압에 의하여 엽에서 생성하는 Ethylene 량이 증대하였다. 4. 토양의 답압에 의하여 하위절간의 생장이 억제되어 도복되기 어려운 생육형으로 되고 수량이 증대하였다. 이상의 결과로부터 맥류 답압의 효과는 맥류 그 자체에 대한 직접적인 효과와 토양을 답압하는 것에 의한 효과가 있음을 알 수 있으며, 또한 토양 답압의 효과는 엽에서 생성하는 Ethylene 량의 증대로 보아 토양 답압이 맥류 뿌리에 대하여 물리적 자극을 주고 있다는 가능성이 시사되었다.

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동부 Diallel Cross$ F_2$세대의 유전분석에 관한 연구 (Studies on Genetic Analysis by the Diallel Crosses in $F_2$ Generation of Cowpea(Vigna sinensis savi.))

  • 김진형;고미석;장권열
    • 한국작물학회지
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    • 제28권2호
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    • pp.216-226
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    • 1983
  • 신 두과작물 증산의 중요성에 비추어 동부의 육종상 기초자료를 얻고자, 품종중 특성이 뚜렷한 6개품종을 2면교잡하여 교배친 6개품종과 $F_2$세대 15개 조합을 재료로 각 형질에 관여하는 유전자의 분포상태 및 우성정도 그리고 조합능력 등을 추정한 바, 그 결과를 요약하면 다음과 같다. 1. Vr-Wr Graph에서 개화일수, 분지수, 협장, 주당협장, 주당립수, 백립중 및 구당립중의 7개형질은 불완전우성이었고, 성숙일수, 생육일수, 절간장 및 협당립수는 초우성으로 각각 나타났으나 경직경은 완전우성에 가까운 불완전우성이었다. 2. 각 형질의 우성정도를 본바, 개화일수, 성숙일수, 생육일수, 절간장, 주당협수, 협당립수, 주당립수, 구당립중의 8개형질은 그 값이 1이상이었고, 그 중 개화일수, 생육일수, 주당협수, 주당립수, 구당립중의 5개형질에 관여하는 유전자에서는 D < H로서 우성효과가 더 큰 것으로 추정되었다. 또한 평균우성정도는 성숙일수, 분기수, 주당립수의 형질들이 부의 값을 보여 타 형질과는 다른 경향이었으며, 우성열성유전자평균빈도는 성숙일수, 절간장, 분기수, 협당립수에서 비교적 낮은 값을 나타내었다. 3. 일반조합능력(GCA)과 특정조합능력(SCA)을 검정한 바, 전 형질에서 일반조합능력의 값이 특정조합능력 보다 컸으며, 그중 구당립중이 일반조합능력과 특정조합능력에서 가장 높았다. 4. 조합능력의 효과에서, 일반조합능력의 효과는 J78이 개화일수, 생육일수, 주당협수, 주당립수, 구당립중의 5개형질에서 높게 나타났으며, 특정조합능력의 효과는 대체로 조합과 형질에 따라서 상이하였으나 TVu 1857$\times$TVu 2885, TVu 2702$\times$J78의 조합에서 그 효과가 크게 평가되었다.dica${\times}$Japonica 품종들은 $17/9^{\circ}C$에서만 고사되고 $20/12^{\circ}C$에서는 초기등숙이 정체되었다가 2주일후부터 등숙이 서서히 시작되었다. 7. 온도조건에 따른 복백미의 형성은 최적온도$(26/18^{\circ}C)$로부터 최저나 최고조건에서 많았고 사미 및 적미도 같은 경향으로 나타났다. 8. 현미립의 길이 및 두께 폭에 대한 영향을 보면 저온조건$(17/9^{\circ}C\;20/12^{\circ}C)$에서 짧거나, 얇고, 좁은 편이었다. 9. 온도별 립중분포의 빈도를 보면 IR36은 최고온도조건이나 $(32/24^{\circ}C)$ 최저온도$(23/13^{\circ}C)$에서 동일한 립중분포를 보였고 최적온도조건에서는 $(26/18^{\circ}C$ 높은 립중분포를 보였고 진흥은 최고, 최저, 최적온도 순으로 립중증가의 빈도를 보였으며 Indica${\times}$Japonica 품종들은 진흥과 IR36품종의 중간 영역에 머물고 있었다.mite처리구가 8.6%, 유황첨가구가 5.7~7.4% 증수되었음을 보이었다. 7. 식물체중의 조단백질 함량은 대조구, 5%, 10% 유황첨가구가 3.31~3.50%로서 비슷하였고 15% 유황첨가구는 3.94%, Dolomite첨가구는 5.38%였다. 아미노산도 15%유황첨가구와 Dolomite첨가구가 많이 함유되어 있었다. 현미중 조단백질은 15%유황첨가구가 10.14%로서 최고이었으며 10%유황첨가구와 Dolomite첨가구는 9.85%로서 다음이었다. 아미노산도 대조구의 현미에는 유황처리구보다 작았으며 유황처리구에서는

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