• 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.

• 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.

• 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.

• 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.

• 한국작물학회지
• /
• 제40권2호
• /
• pp.245-249
• /
• 1995

보리, 밀, 등을 수확기에 보면 미열이삭이 생기는데 이 미열이삭의 수가 품종간에 차이를 나타내는 것인가 하는 문제와 그렇다면 그의 유전력은 어떠하며 다른 형질들과의 상관은 어떻게 나타날 것인가에 대한 조사를 한 결과는 아래와 같다. 1. 보리의 미열이삭수는 찰보리가 평균 6도로서 제일 많았고 조강보리와 새올보리가 평균 1도로서 제일 적어 품종간차가 뚜렷하였다. 2. 밀의 미열이삭수도 탑동밀이 3.6도로서 제일 많았고 조광이 1.4도로서 제일 적어 품종간차가 분명하였다. 3. 보리의 미열이삭수의 유전력은 0.85로서 상당히 높았으며 밀은 0.65로서 보리보다는 약간 낮았으나 두 작물 모두 비교적 높은 유전력을 나타내었다. 4. 보리의 미열이삭수는 절간수와 고도의 유의성이 있는 상관을 나타내었고, 지엽장과도 유의성이 있는 상관을 나타내었으나 다른 형질들과는 상관이 낮거나 부의 상관을 나타내었다. 5. 말의 미열이삭과 절간수와의 사이에는 유의성있는 부의 상관을 나타내었고 미열이삭과 다른 형질들 사이에는 상관이 없었다.

• 한국연초학회지
• /
• 제9권1호
• /
• pp.45-55
• /
• 1987

For some basic information in tobacco breeding, the modes of inheritance and heritabilities for the twelve agronomic and chemical characters were estimated in the study of eight varieties partial diallel set. Additive gene actions were significant for all characters except total nitrogen content and dominance gene effects were also significant for all characters. Yield, number of leaves per plant, leaf length and leaf shape index were inherited as partial dominance, and overdominance was detected for plant height, stem diameter, internode length, total alkaloid, total nitrogen and total sugar content. Dominant gene showed increasing effects in yield, plant height, stem diameter, internode length, leaf width and total sugar content, but showed decreasing effects in the other characters. The broad heritability was very high for all characters. and the narrow heritability was high in days to flower and yield, but low in internode length, total alkaloid, total nitrogen and total sugar content.

• 화훼연구
• /
• 제17권3호
• /
• pp.179-184
• /
• 2009

페튜니아 5개 계통을 이면교배한 $F_1$ 10개 조합 및 양친에 대한 성 관련 형질인 초장, 초폭, 줄기길이, 줄기수, 절간장, 엽수 및 개회수 등의 형질에 대하여 상호관계 및 조합능력을 분석하였다. 초장은 초폭, 절간장 및 개회수 등의 형질들과, 엽수는 초폭, 줄기수 및 개회수의 형질들과 유의성이 인정되었으며, 특히 초폭과 절간장과의 사이에 고도로 유의한 정의 상관관계를 보였다. 일반조합능력(GCA)은 초장, 초폭, 줄기길이, 절간장, 줄기수, 엽수 및 개화수 등 모든 조사 형질에서 유의성이 인정되었고, 특수조합능력(SCA) 초폭, 줄기수, 엽수 및 개화수 등의 형질에서 유의성이 있었고, 일반조합능력효과가 특수조합능력효과보다 크게 작용하였다. 모본의 일반조합능력검정에서 D계통은 초 장, 초폭, 줄기길이, 줄기수, 엽수 및 개회수의 증가를 위해서, I계통은 초폭, 줄기길이 절간장에 대하여 일반 조합능력이 큰 것으로 나타났다. 특수조합능력 검정에서 초폭 증가에 뚜렷한 유의성을 보인 조합은 $D{\times}I$, $F{\times}I$와 $G{\times}I$조합이었고, 초폭, 절간장 및 개회수를 동시에 증가시키는데 유의성을 보인 조합은 $G{\times}I$조합이었다. 광의의 유전력은 7가지 형질 모두 크게 나타났고, 초폭과 줄기길이 및 절간장은 협의의 유전력도 높게 나타났다.

• 아시안잔디학회지
• /
• 제10권1호
• /
• pp.1-11
• /
• 1996

Fifty accessions in Zoysia species and forty-one hybrid lines were evaluated in order to detect analyze the genectic variation of Zoysiagrasses and to obtain the basic information for breeding. 1.Plant height ranged from 13 to 34.5cm, leaf length from 7 to 26cm, leaf width from 2 to 7mm, and first leaf height from 1.1 to 8.5cm 2. The correlations among plant height, leaf length and first-leaf height were high, but leaf Width was correlated only With leaf length. 3. Stolon length was varied from 10 to 108cm, number of stolons from 12 to 53, internode length from 2 to 6.1cm and coverage percentage from 10 to 90%. 4.There were correlation among stolen length, number of stolons, internode length and coverage percentage except between stolen and internode length. 5.M1J and MC2 showed the highest level in stolen length, number of stolons and coverage percentage. Therefore they will be the best breeding materials for the purpose of fast covering. 6.According to the analysis on October 26, 1995, yellow color-change rate of leaves ranged from 5 to 85%, red color-change from 0 to 75% and sum of yellow and red change from 20 to 95%. Speciallty M2M1 and FL-41 kept green color untill early December, indicating that they had the late dormancy. 7. Visual assessment of stolon length and number of stolons, showed similar tendency With actually measured data. 8. Shoot density was very high in M2M1 and S2, and showed negative correlation with leaf width. 9. It is known in Korea that the darker green color of lawngrass is, the better it looks. There were 11 lines with dark green color leaves such as J 85-10, Meyer in Z. japonira, one asacession in Z. matrella and M2M1, M2S8, JM2, 55C2 in hybrid lines.

• Plant Resources
• /
• 제4권2호
• /
• pp.92-96
• /
• 2001

seeding rates(1.5,2.0,3.0 and 3.5$\ell$/10a). There were no differences in the yield components such as length of stem and ear diameter of stem number of branch, internode and ear, and yield of fresh and dry stem between the seeding methods with drilling and broadcasting, but yield components such as length of stem and ear, diameter of stem, number of branch, internode and ear, and yield of fresh and dry stem increased with seeding rates of from 2.5$\ell$ /10a to 3.5$\ell$/10a. Therefore potimum rates and methods of sowing were from 2.5$\ell$/10a to 3.5$\ell$/10a with seeding at the drilling and broadcasting.