• 한국환경과학회지
• /
• 제24권12호
• /
• pp.1673-1679
• /
• 2015

This study was conducted to investigate the effects of fruit set internode on the germination of watermelon seeds. Generally fruits setted in higher than 20 internode were high percent of germination, fruit setted in low internode(5-10) is low. The higher fruit-set internode, fruit weight was significantly increased, but 1,000 seed weight was decreased the more fruit set internode. However number of seed was about 300 seeds irrespective of fruit-set internode. Investigating viability of seed by BP test, general percent germination was recorded highest at 5 flower cluster above 20 internode of fruit-set internode. In contrast, condition of fruit setted on 3, 4, 6 flower cluster were high percent of germination, regarded as unnormal germination not to be as normal seedling by 2~3%. Seed harvested at 5 flower-cluster had high viability on hypocotyl height and diameter of seedling through early growth test, but were not significant. Therefore 5 flower-cluster was optimum fruit-set internode to obtain high-quality seed.

• 한국작물학회지
• /
• 제28권1호
• /
• pp.94-99
• /
• 1983

'81년 태풍 Agnes호에 의해 피해를 받았던 전북지방의 수도 품종들을 대상으로 도복의 원인을 벼의 절간을 대상으로 형태 및 생리적으로 조사분석 하였던 바 그 결과는 다음과 같다. 1. 도복 피해는 서광벼, 한강찰벼, 낙동벼가 심하였고 단간종인 밀양 30호는 경미하였다. 2. 절간장이 길고 단위절간중이 가볍고 간태와 간벽이 가늘수록 도복에 대한 저항성을 약화 시켰음을 명백히 알 수 있었다. 3. 도복된 포장의 벼는 정상답의 벼보다 촤절중이 갑벼고 절간장, 단위절간중과 촤절중과는 유의적인 상관관계가 있었다. 4. 절간에 전질소함량이 낮고 인산, 규산, Cellulose, 전분함량이 많을수록 도복에 대한 저항성을 높였다. 5. 도복에 저항력이 약한 품종은 간장과 단위절간중이 도복답과 정상답과의 차가 크고 저항력이 강한 품종은 그 차가 적었다.

• 한국작물학회지
• /
• 제28권1호
• /
• pp.100-106
• /
• 1983

이 연구에서는 벼 생육기 침수에서 피해가 가장 뚜렷이 나타나는 주요생육형질의 품종간 차이와 벼의 생식생장기 침수에서 피해를 크게 좌우하는 임실장해의 정도가 가장 예민하게 나타나는 시점을 찾기 위하여 벼의 포기단위, 이삭단위, 그리고 영화단위로 청수와 탁수로 처리하여 얻어진 결과를 요약하면 다음과 같다. 1. 침수일수의 증가에 따라 엽초의 이상신장량이 많아졌고, 침수후의 초장신장량 및 분벽수는 감소되었으며 출수지연일수가 길어졌다. 2. 일/인형 품종은 일본형 품종에 비하여 엽초의 이상신장량이 적고 침수후 초장 신장의 억제 및 분벽력의 감소가 적었다. 3. 침수에 의한 임실장해가 가장 심한 시기는 청수와 탁수 모두 출수기이었으며 특히 출수전의 수잉기말에서 출수후 개화하기 전이었다.

• Journal of Plant Biology
• /
• 제33권4호
• /
• pp.285-292
• /
• 1990

In order to elucidate the formation of reaction tissues during the transition from primary to secondary growth, the developmental anatomy was conducted in the first internode of Ginkgo biloba seedling in horizontal position. The righting of the horizontal first internode took place at the middle portion and gradually proceeded to the base during the primary growth. Reaction tissues were formed corresponding to the righting movement in the horizontal first internode. During the transition from primary to secondary growth, compression wood was gradually developed on the lower side only. The anatomical features of compression wood also extended longitudinally to the lower side of the vertical portion where it coincided with the lower side of the horizontal first internode occurs acropetally from basal to apical portion. Eventually, some of the anatomical features of compression wood occurred at the primary growth. And the typical compression wood is gradually established during the secondary growth. On the other hand, the lower side tracheid and ray were longer and higher than those of the upper side in the horizontal first internode. However, difference in the width of ray was not observed between the lower and upper sides.

• Journal of the Korean Wood Science and Technology
• /
• 제46권4호
• /
• pp.315-322
• /
• 2018

Bamboo culm comprises internodes and nodes and is tapered from the bottom to the top. Anatomically, bamboo culm comprises vascular bundles and parenchymal base tissue. The gross anatomical structure of a transverse section of any culm internode is determined by the shape, size, arrangement, and number of vascular bundles. The purpose of this research was to examine the morphology of culm and the distribution and shape of vascular bundles in Ampel bamboo (Bambusa vulgaris). Bamboo culms were harvested from the base. Test samples were obtained from a central 2-cm long segment of each internode across the entire length of the culm. Results showed an uneven spread of vascular bundles in the internode cross-section. Transitioning from the outer to the inner layer of the internode, the number of vascular bundles per unit area decreased and their shape was variable. The size of vascular bundles in the middle layer of the internode was greater than that of those in the outer and inner layers. The shape of vascular bundles was circular in the outer layer, which gradually transformed into vertical oval toward the middle layer and horizontal oval toward the inner layer. Vascular bundles were of type III and IV in the bottom of the culm and type III in the middle to the top of the culm.

• 한국작물학회:학술대회논문집
• /
• 한국작물학회 2017년도 9th Asian Crop Science Association conference
• /
• pp.358-358
• /
• 2017

The plant type is generally one of the most important factor for crop production and be influenced by nitrogen absorption. Soybean plants have nodules in their roots, supplying nitrogen at the vegetative and reproductive stages. Root nodules seem to effect plant type of soybean plants, but there are few reports on the relation nodules and plant type. We tried to clarify the effects of root nodules on the plant type, especially internode length and petiole length, comparing non-nodule soybean with normal soybean. The pot experiment and field experiment were carried out at Mie University and Utsunomiya University in 2015 and 2016. Enrei, a popular cultivar in central Japan, and En1282, non-nodulating isogenic line of Enrei, were used. The petiole length on main stem was measured after defoliation and internode length and yield components were measured after harvest. In the field experiment, the patterns of the final length in internode and petiole on main stem were consistent in both cultivars, and a positive correlation was found between the Nth petiole length and the N-1th internode length, belong to the same phytomere. Therefore, the petiole and internode on the main stem make similar response for environmental factors. In pot experiment, Enrei grew with the same pattern as field experiments, but in En1282, the elongation of petiole and internode in the upper part was suppressed, especially the petiole was suppressed greatly. The main stem becomes the basis of the plant type. These results were considered that the nitrogen is distributed preferentially to the internode than the petiole. It seems that the pot cultivation restricted the rhizosphere and caused nitrogen deficiency in En1282. These results suggested that the slight nitrogen deficiency provided from the root nodules was compensated by the increase of the amount of inorganic nitrogen absorption due to the expansion of the rhizosphere, and the severe nitrogen deficiency suppressed elongation of petiole and internode. It is clear that root nodules effect the plant type by supplying nitrogen to internodes and petioles.

• Journal of Ecology and Environment
• /
• 제29권2호
• /
• pp.105-111
• /
• 2006

A natural, tidal-flat clone of Zoysia sinica was studied to compare ramet growth properties in central area with in peripheral area. In new stolon and rhizome, internode length, weight, shoot height and weight, and spike production were monitored on July 25, 2004. The weight/height rate of shoot between stolon and rhizome, the shoot/stolon (or rhizome) rate in weight between central and peripheral area were not different. However, other properties differed in stolon from rhizome or between central and peripheral area significantly differed: 1. The rhizome in central area had a larger node number, shorter internode length, higher shoot height, larger shoot biomass, and higher rate of non-shoot nodes than that in peripheral area. 2. The stolon in central area had a smaller node number, shorter internode length, and smaller biomass than that in peripheral area. 3. In the same area, the rhizome had a larger node number (except for central area), shorter internode, higher shoot height, larger shoot biomass, higher rate of non-shoot node, and higher rate of node having over two shoots than the stolon. No relationship could be found between shoot size and spike production in shoot on vertical rhizome (lower node of old shoot).

• 한국작물학회지
• /
• 제29권4호
• /
• pp.356-361
• /
• 1984

우리나라 수도 품종들의 절간 유관속수 및 통기강수를 절위별로 알아보고 이들과 이삭형질과의 상관관계를 구해 본 결과 다음과 같은 결과를 얻었다. 1. 우리나라 수도 품종들의 절위별 총 유관속수는 상위제 1절간에서 약 23개∼47개로서 품종간에 현저한 차이가 있었다. 그러나 제 2절간 이하에서는 유신품종을 제외하고 품종들간에 큰 차이없이 51개∼59개의 범 위이었다. 2. 통기강은 상위제 1, 2절간에서는 전혀 발생이 없었고 제 5절간에서는 모든 품종이 양호하게 발달하여 21∼31개가 발생하였으며 품종간에 뚜린한 차이를 나타내는 절위는 제 4절간이었다. 3. 절간의 유관속수, 굵기 및 수장, 1,2차지경수, 영화수간에는 매우 밀접한 정의 유의상관이 인정되었다.

• 한국작물학회지
• /
• 제25권1호
• /
• pp.20-24
• /
• 1980

Seven different rice cultivars treated with different levels of gibberellic acid (0, 10, 50 and 100 PPM GA3) at panicle initiation stage. showed retardation effect on the panicle length and the 2nd internode from the top, where as, the total culm lengths were remarkably elongated, about 50-120% in short varieties and about 10-15% in the tall varieties over the control, mainly, because of the lower internodes elongation. The 2nd internode of Gamadi variety from Nepal was almost entirely shortened with GA3 application.

• 한국작물학회지
• /
• 제34권3호
• /
• pp.239-245
• /
• 1989

벼의 Source와 Sink 관련형질의 동일주내 개체간 변이 및 상호관련성을 알기 위하여 조만성이 다른 6개벼 품종의 지상부 생육제특성을 조사, 분석하였던 바 다음과 같은 결과를 얻었다. 1. 동일건재에서 개체간 제형질의 편이 및 변이는 절간장은 하위절간, 엽신은 지엽, 엽 폭은 하위엽신에서 컸고, 수에 있어서는 2차지경과 2차지경 착생영화수에서 컸다. 2. 식물체 부위별 Source와 Sink 관련기관과 영화착색수와의 관계는 영화수는 제2엽신장 및 엽면적, 제2절간장, 제3정간태에 영향을 주는 고도의 유의적인 정상관관계이었다. 3. 절위별 절간장 및 엽위별 엽신장과 수장과의 상관관계도 제2엽신장 및 2정간장에 수장이 영향을 받는 정도가 컸다. 4. 1, 2차지경수와 영화수와의 관계는 1차지경보다는 2차지경수가 많을수록 영화수도 증가하는 상관관계이었다. 5. 식물체의 무기성분조성은 엽신, 엽초, 간, 수의 순위로 높은 함량을 나타냈다.