• 한국작물학회지
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• 제38권5호
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• pp.477-482
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• 1993

담배재배기간중 잎담배수량에 영향을 주는 양적형질의 변화량과 주당엽건물이나 엽면적과의 관계, 최종수량과의 상관등을 구명하여 담배 생산성 연구의 기초자료로 이용코자 시험한 결과를 요약하면 다음과 같다. 1. 주당엽건물량에 미치는 엽위별 엽면적의 영향력을 최대엽과 인접 4매엽면적의 합이 가장 높았으며 다음은 주당엽면적, 14매째의 엽면적순으로 나타났다. 2. 주당엽건물량에 미치는 엽이별엽건물량의 영향력은 14매째의 엽건물량이 가장 높았으며 다음은 최대엽과 인접 4매 엽면적의 합 순으로 나타났다. 3. 황색종잎담배 최종수량은 이식후 70일째의 건엽물량과 가장 깊은 관계가 있고 이식후일수 경과가 적은 시기일수록 상관도가 낮았다. 4. 버어리종 담배의 최종수량은 이식후 50일째 까지의 엽건물량과는 유의성 관계가 없었고 이후 65일일째 까지는 5% 수준에서 70일째에서는 1% 수준에서, 유의성관계가 인정되었다.

• 한국작물학회지
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• 제43권4호
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• pp.269-272
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• 1998

Characteristics of seed and plant growth of the nine local collections of the medicinal plant, Agastache rugosa were evaluated. Seed size of the collection from Garyungsan was larger than the others. Seeds of Damyang collection were the smallest in size. Seeds of the collections were mostly oval shaped. There were no differences between brown and black seed coat color groups in seed width, ratio of seed length to seed width and 1,000 seed weight. Stem lengths of Garyungsan and Bongpyung collections were 99.9 and 95.6 cm, respectively, and were longer than Damyang and Jindo collections. Garyungsan collection had long leaf shape. Leaf size was the smallest for Damyang collection, but was the largest for Bongpyung collection. Inflorescence length of Mokpo collection (15.6 cm) was longer than the average over all collections (12.3 cm). Damyang collection was the shortest (10.1 cm) in inflorescence. Top dry weight of each collection from Soonchun, Bongpyung, Mokpo, Jindo, and Gurye was greater than the average over all collections (20.38 g/plant). Jinju and Damyang collections had less top dry matter than others. There was no difference in the growth traits examined between brown and black seed coat groups. The brown seed group was greater in leaf weight than the black seed group. However, these two groups were not different in stem and inflorescence weight. Collections of A. rugosa from Bongpyung, Soonchun, and Mokpo were promising for commercial cultivation because of their great top dry weight, especially in leaf and inflorescence.

• Journal of Ginseng Research
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• 제8권1호
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• pp.57-64
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• 1984

In order to clarify an effect of seedling weight on the growth pattern of ginseng, seedlings ranged from 0.4g plant to 1.8g plant were transplanted, and then the characters of 5- and 6-year-old ginseng were investigated. The characters of root and leaf, such as length and diameter of main root, root weight, leaf area, and leaf dry weight of 5- and 6-year-old ginseng originated from large seedlings were superior as compared with those from small seedlings, and percentage of missing plant was increased with the increase of seedling weight. There were, however, no significant difference in stem length, stem dry weight, number of seeds per plant and number of palmate leaves and leaflets per plant in 5- and 6-year-old ginseng and these characters were not affected by the weight of seedings transplanted. Root field per unit area was higher in seedings of above 0.6g/plant than in small seedlings.

• 한국작물학회지
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• 제45권2호
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• pp.88-92
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• 2000

Excessive soil water in paddy field induces growth losses during the vegetative stages of soybean plants. Our objectives were to know growth responses of soybean as affected by the level of ridge heights. A field experiment was conducted at the Research Farm of Korea University near Seoul in 1996. Ten cultivars of soybean (Glycine max (L.) Merrill) were planted at the ridge heights of 10, 30, and 50cm in paddy soil on 27 June. Total dry matter accumulation at the 10cm ridge height was severely decreased until the growth stage of R5 as compared to the ridge heights of 30 and 50cm, and this decrement was mainly due to both reduced leaf and stem dry weights. However, seed dry weight was not significantly decreased at the lower ridge height with the increment of harvest index. Cultivar differences were found on seed dry weight, crop growth rate from R1 to R5, and leaf/stem ratio of R5. From the above results, soybean growth responses to excessive soil water in paddy field were different between seed filling stage and late vegetative to early reproductive growth stages.

• 한국초지조사료학회지
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• 제8권2호
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• pp.104-109
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• 1988

A field experiment was conducted in order to investigate the seasonal changes of leaf grwoth and related characteristics in three cultivars of orchardgrass; Potomac, Kay and Sumas. The results were summarized as follows: 1. Leaf elongation was increased in a nearly linear phase during first and third cutting stages. It was increased slowly in early 10 days to 15 days after cutting and increased rapidly there-after during the rest cutting stages. In cultivars, Potomac was showed higher leaf elongation than other cultivars during all cutting stages. There was no difference of leaf width within cutting stages, but the leaf width of fall regrwoth was narrow. Sumas had relatively short and wide leaves. 2. Leaf dry weight and leaf area in first cutting stage were larger than others. Leaf area was increased rapidly form 15 days after cutting and leaf weight was increased rapidly from 20 days over all cutting stages. The increase in leaf area and dry weight were slow down after 30 days. 3. Number of epidermal cells was increased rapidly after cutting and the rate of increase was slow down after 30 days. In a cross section of leaf tissue, the part of mesophyll was occupied with about 60% of total area and larger area than other tissue, the part of mesophyll was occupied with about 60% of total area and larger area than other tissues. Leaf tissue had a large vacancy at early growth period after harvest and was filled gradually with mesophyll. This result was related to the increase of leaf dry matter.

• 한국작물학회지
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• 제33권1호
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• pp.81-86
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• 1988

왕골 육종을 위한 형질상호간의 유전관계를 조기에 추정하고 효율적인 선발을 위한 기초자료를 얻고자 국내수집종 64품종을 공시하여 유전력, 표현형상관, 유전상관, 환경상관을 조사한 결과를 요약하면 다음과 같다. 1. 7개 형질에 대한 유전력 중 대부분의 형질에서는 높았으나 건피수량에서 만은 다소 낮게 평가되었다. 2. 형질상호간의 상관관계는 경장은 건수중과 건피수량에서, 경의 직경 역시 건수중과 건피수량에서 가장 높은 유의차로 정의 상관을 보였다. 3. 수량과 타형질과의 상관이 가장 높았든 형질은 경장, 경의 직경, 건수중이었으며 경로계수의 분석결과도 이들 형질의 직접효과가 가장 높았다.

• 한국균학회지
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• 제41권2호
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• pp.118-126
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• 2013

The experiment was carried out to analyze the inhibition effect of plant pathogenic fungi and growth promotion activity induced by the bacterial strains isolated from peatmoss. Among the isolated bacterial strains, B10-2, B10-4, B10-5 and B10-6 which showed more than 30% inhibition rate against Botrytis cinerea and Rhizoctonia solani in vitro, were further analyzed in the greenhouse for the growth promotion activity on lettuce (Lactuca sativa), pak-choi (Brassica compestris L. ssp. chinensis) and Chinese cabbage (Brassica campestris L. ssp. pekinensis). The results showed the treatment of B10-4 on lettuce showed the highest growth promotion activity with the leaf area ($169.17cm^2$), fresh weight (leaf: 40.29 g, root: 8.80 g)and dry weight (leaf: 11.24 g, root: 4.17 g), which was about two folds as compared to control. On pak-choi, the growth promotion rate was the highest with the leaf area of $112.87cm^2$, leaf fresh weight of 60.70 g, root fresh weight of 3.37 g, leaf dry weight of 14.34 g, and root dry weight of 1.90 g. As a result of treatment of B10-13 on chinese cabbage, the growth promotion rate was the highest with the leaf area ($293.56cm^2$), fresh weight (leaf: 113.67 g, root: 2.40 g) and dry weight (leaf: 6.03 g, root: 0.53 g). The production of Indole Acetic Acid (IAA) and Indole-3-Butylic Acid (IBA) were also analyzed in these bacterial isolates. The IAA and IBA analyses were carried out in all bacterial isolates each day within the 5 days of incubation period. The highest production of IAA was observed with $112.57{\mu}g/mg$ protein in B10-4 after 3 days of incubation and IBA production was the highest in B10-2 with $58.71{\mu}g/mg$ protein after 2 days of incubation. Also, phosphate solubilizing activity was expressed significantly in B10-13 in comparison to that of other bacterial isolates. Bacterial identification showed that B10-2 was Bacillaceae bacterium and B10-5 was Bacillus cereus, B10-4 and B10-6 were Bacillus sp. and B-13 was Staphylococcus sp. by ITS sequence.

• 한국환경생태학회지
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• 제35권6호
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• pp.644-658
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• 2021

도시 생태계에서 우점 수종의 형질 특성은 분획화 및 고립된 식생, 그리고 생물상호작용 감소 등 환경 변화에 대한 종의 형질 적응과 생태계 기능에 대한 통찰력을 제공한다. 우리는 한국의 서울 중심에서 남쪽 방향의 4개 산지에서 환경 요인 (지리, 기상 및 토양 속성)을 포함하여 모두 40개체 팥배나무 (Sorbus alnifolia)에서 측정한 4개 유형의 잎 형질 (Leaf area, Specific leaf area, Leaf dry mass content, Leaf shape index)과 7개 유형의 번식 형질 (Fruit width, Fruit length, Fruit shape, Fruit dry weight, Fruit dry matter content, Seed weight 및 Seed ratio)의 평균과 분산 양상, 그리고 형질 조합에 대한 다변량 분석을 실시하였다. 측정된 환경 요인은 조사 장소의 개별성을 나타내었지만, 도심 식생이 더 건조하고 생장도일이 길었다. 도심에서 팥배나무의 잎은 작고 무거워지며, 열매는 길쭉하고 가벼운 종자를 생산하여, 오랜 도시화 영향에 따른 형질 반응들이 관찰되었다. 우리의 연구는 식생 파편화 및 고립화에 따른 생물 상호작용 감소를 나타내는 도심 환경에서 팥배나무 집단의 성장 및 번식 기제의 변화를 확인하였다. 우리는 축소된 생물 상호작용 규모, 그리고 대기 오염 같은 부정적 환경 요인이 많은 도시에서 핵심 수종의 기능과 지속성에 관해 제한적이지만 뚜렷한 생태 정보를 제공한다.

• The Korean Journal of Ecology
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• 제20권5호
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• pp.339-345
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• 1997

The Arisaema robustum, perennial non-stem herb, population in the temperate forest of Sanseong-ri, Joongbu-myeon, Kyonggi Province was studied for leaf pattern and leaf growth from 1993 to 1995. The area of each side leaflet was larger than that of the apical leaflet in 3-leaflet form plants. But there was no significant difference among the leaflets (apical, 1st side and 2nd side leaflet) in t-testing of the 5-leaflet form plants. The specific leaf area (SLA) of the 3-leaflet form plant was greater than that of the 5-leaflet form plant, and the difference was significant at 0.1%. But differences of SLA value among the leafleats of the same leaflet form plants were minor. The area of leaflets or total leaf area was inversely proportioned to the their SLA values. Especially, the correlation coefficients (CC) between leaf area and SLA in apical leaflets and side leaflets of the 3-leaflet form plant compared to the 1st side leaflets of the 5-leaflet form plants were significant at the level of 1%. The differences between two sides in the dry weight and area of leaflets starting from the apical leaflets were about 5%. The CC values between attributes of the petiole (length and dry weight) and those of leaf blades (dry weight, leaf area and SLA) were high and significant at a 1% level. Especially, The CC value between the dry weight of the petioles and that of the leaf blades was higher than any others (r=0.952). The morphologies of the leaf margins were entire, medium serrate and serrate, and the same plant showed the same type from year to year. The plants usually had one leaf and occasionally 2 leaves. 1-leaf plants usually had 3 or 5 leaflets and occasionally 2 or 4 leaflets. Each year, the ration of individuals having the same number of leaflets was 72%, and that of individuals having a different number of leaflets was 27.54% (an increase of 20.4% and a decrease of 7.1% respectively). In the individuals increasing in the number of leaflets, the ration of individuals shifting from the 3-leaflet from to the 5-leaflet form was 14%. The increase ration of leaf area per individual a year was 37%, and the increase ratios of the plants increasing in leaflets were 60-70% regardiness of leaflet increase. The ratios of leaflet length/breadth were about 1-2, and the variations of those were 0.182-0.286 each year (12-20%).

• 한국유기농업학회지
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• 제13권1호
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• pp.101-112
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• 2005

In order to select the suitable soybean cultivars for paddly field cultivation, growth response and yields characters were investigated with 37 Korean domestic soybean cultivars, in Yeoncheon, Gyeonggi province. The results can be summarized as follows ; When the soybeans were cultivated in paddy field, significant differences were observed in growth responses at each growth stage and yields among the cultivars. Yields of six cultivars, such as Danbaekkong, Paldokong, Pungsannanulkong, Myeongjunamulkong, Saeolkong, and Namhaekong, were less than 200kg/10a, however, seven cultivars, such as Shinpaldalkong 2, Sohokong, Dormikong, keumkangkong, Bukangkong, Dajangkong, and Geomjeongkong 2, showed highest yields ranged from 301~385kg/10a. At V5 stage, highly positive correlation(r=091$^{{\ast}{\ast}}$) was observed between the top dry weight and leaf area while negative correlation was existed between T/R ratio and root dry weight. However, at R2 age, leaf area was correlated with both top and root dry weight while T/R ratio was correlated with leaf area and top dry weight. Thirty-seven soybean cultivars used in this experiments were classified into 3 different clusters based on 19 important agronomic characters, and genotypic properties of the cultivars were similar in each cluster. In results, high yields could be achieved by selected cultivation of suitable soybean cultivars such as Shinpaldalkong 2 which showed early maturation date and highly ripening ratio.