Go to the main menu
Skip to content
Go to bottom
REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean Journal of Horticultural Science and Technology
Journal Basic Information
Journal DOI :
Korean Society of Horticultural Science
Editor in Chief :
Volume & Issues
Selecting the target year
Effect of High Temperature and Humidity on Seed Production and Mother Bulb Harvesting of Onion
Ku, Yang-Gyu ; Park, Won ; Lee, Eul-Tai ; Kim, Cheol-Woo ; Kim, Yu-Seon ; Jang, Young-Seok ; Ahn, Sung-Ju ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 97~100
This study was undertaken to determine the effect of high temperature, high humidity and high temperature plus high humidity on seed production and mother bulb harvesting of three onion (Allium cepa L.) cultivars of early cultivar ‘Shinsunhwang’, intermediate cultivar ‘Maebsihwang’ and late cultivar ‘Chunjudaego’. At 32 days after treatment, onion plants were harvested and measured mother bulb parameters such as bulb height, diameter, weight and number, and seed yield. The results show that bulb height of the high humidity and high temperature plus high humidity treated plants significantly affected, but bulb diameter, weight and number were unaffected. Significantly decreased bulb yield in the late cultivar ‘Chunjudaego’ would be caused by the reduced bulb height, diameter, weight and increased bulb number. Compared to control, high temperature, high humidity and high temperature plus high humidity treatments significantly decreased seed yield of three onion cultivars such as early, intermediate and late. Especially, onion seed yield of the late cultivar ‘Chunjudaego’ under high temperature and high temperature plus high humidity treatments were considered to be more damaged compared to other cultivars.
Yield, Fruit Quality, and Branch Extension of 'Fuyu' Persimmon as Affected by the Length of Bearing Mother Branches
Park, Doo-Sang ; Choi, Seong-Tae ; Kim, Sung-Chul ; Kang, Seong-Mo ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 101~105
This study was conducted to establish the relationship between the length of bearing mother branches in ‘Fuyu’ persimmon (Diospyros kaki) and the yield, fruit quality and branch extension from 2004 to 2006. There were 156.5 bearing mother branches in a 9- to 11-year-old tree after dormant pruning in winter, 72.4% of which being shorter than 20 ㎝. On average, a tree had 517.5 flower buds, 60.3% of them being born on bearing mother branches shorter than 20 ㎝. Number of fruits harvested from an bearing mother branch of 10 ㎝- and 10.1 to 20.1 ㎝-long were 0.6 and 0.9, respectively, suggesting the usefulness of shorter shoots to be used as bearing mother branches for the following season when defruited. Average fruit weight did not differ significantly depending on the length of bearing mother branches; the leaf-to-fruit ratio was only 8.6 when the bearing mother branches were shorter than 10 ㎝. Fruits tended to become smaller if the bearing mother branches were longer than 30.1 ㎝. The bearing mother branches shorter than 10 ㎝ extended their branches to 31.8 ㎝ in three years, whereas those longer than 40.1 ㎝ to 102 ㎝ during the same period. When the trees were pruned to have their bearing mother branches either shorter or longer than 20 ㎝, the trees having shorter bearing mother branches were 65.5% more productive with no significant differences in quality parameters of the fruits. It was concluded that dormant pruning to retain as many bearing mother branches shorter than 20 ㎝ should help to control tree size and increase the yield.
Effects of LEDs on the Germination, Growth and Physiological Activities of Amaranth Sprouts
Cho, Ja-Yong ; Son, Dong-Mo ; Kim, Jong-Man ; Seo, Beom-Seok ; Yang, Seung-Yul ; Kim, Byoung-Woon ; Heo, Buk-Gu ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 106~112
This study was conducted to clarify the effect of light-emitting diode (LED) for the light quality on the germination and physiological activity of amaranth (Amaranthus spp.) sprouts. We have germinated and grown the amaranth sprouts with blue, green, red, white, yellow, red+blue color lights for 14 hours and the dark condition for 10 hour, at the temperature of 25℃ (daytime) / 18℃ (nighttime). We have also made amaranth sprout extracts by methanol and examined into their physiological activities. All seed germination of amaranth sprouts were completed within 3 days after seeding irrespective of light sources. The fresh weight of total sprout has been increased in amaranth sprouts, which showed no significant meaning among the different treatments. However, the physiological activities indicated a significance meaning among the different light quality treatments. The total phenol compound contents were extremely increased in amaranth sprouts grown under the blue color light and the mixed light of blue and red color. And the total flavonoid contents were significantly increased under the red+blue light by 21.2 ㎎·L-1 which increased twice compared with the control. DPPH radical scavenging activity at 2,000 ㎎·L-1 were increased over 34% which were sprouted and grown under the blue or mixed light of red and blue color compared with the control. Nitrite radical scavenging activities of sprouts were most decreased compared with the control when grown under all lights except yellow light. Mushroom tyrosinase inhibition activity of amaranth sprouts was much lower than the control under the blue and mixed light of blue and red color.
Changes of Growth Responses during a Growing Period to
Treatment in Colored Calla Lily 'Black Magic'
Choi, So-Ra ; Lim, Hoi-Chun ; Ahn, Min-Sil ; Kim, Myung-Jun ; You, Dong-Hyun ; Ryu, Jeong ; Eun, Jong-Seon ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 113~117
The main objectives of this study were to investigate changes of growth responses during a growing period in Zantedeschia albomaculata ‘Black Magic’ by soaking tubers into a 500 ㎎·L-1 GA₃ solution before planting. Plant grew very rapidly for two months after planting and the growth stopped with leaf senescence since October. Shoot weight and number of leaves were the highest on August, leaf length was similar since June and leaf width increased from May until August steadily. Tuber weight decreased from planting time until August and then increased until December. Also tuber diameter showed a similar change accord with tuber weight but decrease phenomenon in early growth stage was not shown. Days to emergence was 2.8 days shorter in GA₃ treatment than no treatment, so shoot development was promoted for two months after planting, but plant height, shoot weight and leaf width in GA₃ treatment were shorter since June. According to GA₃, number of flowers increased, but leaf width tend to decrease. Flower width decreased and a lower of spathe opened. Also tuber weight and number of buds were decreased by GA₃ treatment thus it was thought that growth response in the following year would be affected by GA₃ treatment.
The Effects of M.9 and M.26 Rootstocks on the Characteristics of Mixed Buds in 'Fuji' Apple Trees
Hong, Sung-Dae ; Chun, Ik-Jo ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 118~123
This study was carried out to establish the efficient winter pruning practice by the classification of morphological various mixed buds and the determination of their effects on the blooming and fruit characteristics of ‘Fuji’ apple (Malus domestica) trees grafted on M.9 and M.26 rootstocks. In the ‘Fuji’ apple trees on M.9 and M.26 rootstock, 23.6% and 25.1% of mixed buds were classified a certain type, which is fully covered with pubescence, and the size is bigger than 7 ㎜ length and 4 ㎜ width with closed scale. Large types of mixed bud, longer than 7 ㎜ length and 4 ㎜ width, were 53.6% and 64.3% in ‘Fuji’/M.9 and ‘Fuji’/M.26, respectively. In the relationships between flowering percentage and mixed bud size, ‘Fuji’/M.9 showed that the bigger mixed buds had the higher flowering rates, but ‘Fuji’/M.26 showed the highest flowering rates in 9～8.1 ㎜ and 4.4～4.0 ㎜ of length and width sizes of mixed buds, respectively. There were no correlations between mixed bud characteristics and fruit qualities, except mixed bud sizes. The longer lengths of mixed buds produced the heavier apple fruit in the trees of both rootstocks.
Effects of CPPU, TDZ, and BAP on Tubercle Proliferation of Chamaecereus silvestrii f. variegata
Choi, I-Jin ; Lee, Chang-Hee ; Cho, Jun-Hyeung ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 124~128
This study was conducted to investigate the effect of plant growth regulators (CPPU, TDZ, BAP) on the growth and the propagation of tubercle of Chamaecereus silvestrii f. variegata. The treatment of CPPU and TDZ increased the number of tubercle at all the concentration. Although TDZ 150 ㎎·L-1 treatment resulted in the highest tubercle number (26.7 ea), there was no tubercle over 10 ㎜ in diameter. Addition of TDZ increased the number of tubercle but retarded the growth of tubercle. Therefore this treatment was inappropriate for scion's diameter, height and tubercle proliferation. Compared to the control, the BAP treatment showed the increase of the height. BAP at 1,000 and 3,000 ㎎·L-1 diminished the growth in diameter, however, at 5,000 ㎎·L-1 results as same growth as the control. At all the concentration, the number of tubercles over 10 ㎜ was higher than the control by three times, and BAP of 5,000 ㎎·L-1 was the most effective for the scion's diameter, height and tubercle proliferation. These results suggested that CPPU and BAP treatments could be effectively used for enhance of the scion growth and tubercle proliferation of C. silvestrii f. variegata.
Variation of Growth and Yield in Rice Nursery-tray Cultivation of Sedum sarmentosum Local Strains
Kim, Hyo-Jin ; Lee, Seung-Yeob ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 129~133
To select superior strains for the cultivation of Sedum sarmentosum using a rice nursery tray (30×60×3 ㎝) in non-heating plastic film house, cutting cultivation (40 per tray) was conducted using 13 local strains on September 20th. In growth at 60 days after cutting, plant height, fresh weight and dry weight of Bucheon and Keumsan strains were excellent. At the first harvesting (April 25th) in post-wintering, fresh weight was the highest in Keumsan strain, but both yield and quality were good in Wando, Kunsan and Buan strains. The fresh weight at the second harvesting (June 5th) was significantly high in Pocheon and Bucheon strains, but plant height was over-grown. In the relationships among growth characteristics, fresh weight had highly significant positive correlation to plant height and stem number per tray. Stem thickness had significantly negative correlation to stem number per tray or leaf length/width ratio. In high-density cultivation using a rice nursery tray, Keumsan, Pocheon and Bucheon strains showed a good growth under low temperature at pre- and post-wintering, and Wando, Kunsan and Buan strains were proper under high temperature.
Growth and Survival Rate of Softwood Cuttings Influenced by Bed Media, Cutting Length and Thickness on Several Cultivars of Highbush Blueberry
Jung, Jea-Hoon ; Lee, Byoung-Yil ; Kim, Hwa-Yeong ; Kim, Hak-Ki ; Hong, Sae-Jin ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 134~138
Softwood cuttings were conducted to establish an efficient propagation method of highbush blueberry grown in shaded glasshouses during summer from year 2005 to 2007. When the cuttings were planted in peatmoss:sand (4:1) media survival rates of ‘Bluejay’ and ‘Bluegold’ were 52.8 and 71.5%, respectively. ‘Sharpblue’ was 85.5% when the cuttings were planted in peatmoss media. Growth and rooting were significantly improved when peatmoss was used as a major component of media comparing to combination of common bed soil, perlite, and vermiculite. Length of cuttings affected the survival rate, too and those for short cuttings (8-12 ㎝) and long cuttings (14-16 ㎝) of ‘Bluegold’ were 66.7 and 49.3%, respectively. ‘Bluejay’ cuttings showed the similar tendency, while the length of cuttings did not affect the survival rate of ‘Sharpblue’. Improved rooting and consecutive growth was found when thick cuttings were used for ‘Sharpblue’ and ‘Bluegold’ and thin cuttings were used for ‘Bluejay’. Results indicate that the survival rate, rooting and consecutive growth for softwood cutting were improved when shoot and thick cuttings were used the conditions of the present study.
Lysophosphatidylethanolamine Treatment Stimulates Ripening in Table Grape
Hong, Ji-Heun ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 139~143
This study was initiated to investigate the effect of lysophosphatidylethanolamine (LPE) on ripening of two table grape varieties: ‘Crimson’ and ‘Red Globe’ (Vitis vinifera L.). The experiments were performed at USA and Chile in 2004 and 2005, respectively. It was found that application of LPE has noticeable effect on color enhancement. LPE treatment resulted in increase in yield, comparable to that achieved with Ethrel treatment in ‘Crimson’ and ‘Red Globe’ grapes. Efficacy of LPE on table grape ripening in Chile was identical with it shown in USA. Our expanded knowledge would lead to broader applications of this environment-friendly method in improving the quality and quantity of crop production, and would contribute to creating higher profits in commercial agriculture.
Effect of Storage Temperature and 1-MCP Treatment on the Incidence of Flesh Browning Disorder in 'Wonhwang' Pears
Moon, Seung-Joo ; Han, Chang-Hoon ; Lim, Byung-Seon ; Lee, Chung-Hyun ; Kim, Myung-Surn ; Hwang, Yong-Soo ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 144~148
‘Wongwhang’ pear often suffered from the incidence of core and/or flesh browning, which is known to be associated with an improper postharvest handling including storage temperature. We examined the effect of storage temperatures and 1-MCP treatment on the occurrence of browning disorder in ‘Wonwhang’ pears (Pyrus pyrifolia Nakai). The incidence of flesh and/or core browning was not consistent to storage temperature (0-10℃). Fruit with high soluble solids and low firmness (more mature fruit) at harvest showed a tendency of high incidence of browning disorder regardless of storage temperature and the effect of 1-MCP (0.5 to 1 ㎕.L-1) on disorder occurrence was not clear. The browning disorder in ‘Wonwhang’ appeared to be rather affected by the maturity of fruit at harvest. Future study including determination of accurate maturity indices for harvest is required to prevent the postharvest suffering by browning disorder.
Postharvest Quality of 'Whangkeumbae' Pear Affected by Preharvest Fruit Bagging
Ryu, Mi-Ran ; Kim, Gi-Yun ; Yang, Yong-Joon ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 149~153
The postharvest quality of ‘Whangkeumbae’ pear (Pyrus pyrifolia) affected by preharvest fruit bagging was investigated. The russet occurrence were more reduced by the bagging with small yellow paper at 25 days after full bloom (DAFB) than those of bagged at 40 or 50 DAFB when three harvest date (120, 135 and 150 DAFB) were compared. The fruit was larger with later harvest date however the fruit size was not influenced by the bagging time. Unbagged fruits showed higher values of the peel b with extending storage duration compared to bagged fruits. The SSC contents of unbagged fruit were higher than those of bagged fruit at different bagging methods. Higher levels of carbon dioxide and ethylene were produced in untreated fruit than in bagged fruit during cold storage. ‘Whangkeumbae’ pear showed a typical climacteric pattern by representing the sharp increase of ethylene and respiration during storage. Ethylene and carbon dioxide of fruit bagged at 25 DAFB were minimal detected among bagged fruits during storage. The fruit was more marketable with earlier bagging at 25 DAFB and the good quality was maintained during cold storage at 0℃ for 50 days.
Tetraploid Induction in Miscellaneous Citrus Using Colchicine
Lee, Dong-Hoon ; Park, Jae-Ho ; Moon, Young-Eel ; An, Hyun-Joo ; Yun, Su-Hyun ; Hyun, Jae-Wook ; Choi, Hye-Un ; Kang, Sung-Ku ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 154~159
To induce tetraploids of miscellaneous citrus, ‘Hassakku’ (Citrus hassaku Tan.) and ‘Shinamanatsu’ (C. shinamanatsu Tan.), 0.1 mL of 0.05, 0.1, 0.5 and 0.9% colchicine solutions was injected into leaf detached axillary buds. As a result of ploidy analysis, newly developed young leaves of the treated buds revealed one tetraploid shoot of ‘Hassaku’ and ‘Shinamanatsu’ in the 0.1% and 0.5% colchicine-treated buds, respectively. The putative tetraploid shoots were successfully top-grafted onto trifoliate orange. In third year from colchicine treatment, they flowered, and produced larger leaf stomata, anthers and pollen grains than their original diploids. The chromosome number of their shoot tip merismatic tissues was 2n=4X=36.
Breeding of a New Bright Red Mini-gerbera 'Cookie' with Strong Peduncle and High Yield for Cut Flower
Chung, Yong-Mo ; Hwang, Ju-Chean ; Chin, Young-Don ; Kim, Su-Kyung ; Kwon, Oh-Chang ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 160~163
A new red mini-gerbera (Gerbera hybrida Hort.) ‘Cookie’ was developed from a cross ‘Haiti’ and ‘Bonny’ followed by seedling and line selections at the Flower Breeding Research Institute, Gyeongnam Agricultural Research and Extension Services in 2005. Characteristic tests were conducted three times from 2003 to 2005. ‘Cookie’ has semi-double type mini flower in good harmony with bright red (RHS 45-B) ray floret and green center. It has stable flower shape and strong peduncle, and its vase life was 12.8 days. The average yield of ‘Cookie’ was 115.6 flowers per plant a year in greenhouse yield trials carried out from 2003 to 2005. This cultivar registered for commercialization in 2006. ‘Cookie’ would be cultured under greenhouse condition in Korea.
Effect of Generation Advancement by Inbreeding on Inbreeding Depression and Seed Germination in Strawberry
Rho, IL-Rae ; Cho, Yong-Seop ; Cheong, Jae-Wan ; Jeong, Ho-Jeong ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 164~167
A problem associated with inbred line breeding of strawberry (Fragaria × ananassa) is that the plant's vigor becomes weak as to selfing repeats itself and as a consequence further, selfing can be impossible. To solve this problem, inbreeding depression and percent germination, categorized by generation to be selected individuals with non-inbreeding depression and to be eliminated individuals with inbreeding depression has been researched. As a result, F₂ lines which originated from ‘Akihime’ variety had 36.3% germination, and F₃, F₄, and F₅ had 13.5, 55.9, and 65.8%, respectively. As generation progressed, the percent of germination increased. Also, it had same result by the lines originated from ‘Johong’ and ‘Sachinoka’ variety. However, there was a difference of lines on percent germination within the same variety. The investigation of inbreeding depression according to the selfing was; for F₂ generation originated from ‘Akhime’ variety was 25.0%, F₃ was 48.5%, F4 was 21.1%, and F₅ was 14.4%. That of originated from ‘Johong’ variety was 25, 12.5, 6.2, 5.3%, respectively. Also, for ‘Sachinoka’ variety was 33, 74.8, 26.4, 14.7%, respectively. When the percent germination of the inbreeding depression plant and non-inbreeding depression plant in lines originated from ‘Akihime’ variety were compared, there was not a difference. However in lines originated from ‘Johong’ and ‘Sachinoka’ variety, the percent germination of inbreeding depression plant was remarkably lower. In the next generation of lines occurred inbreeding depression, we also found the condition of inbreeding depression; although the degree of inbreeding depression varies. As follows, inbreeding depression and percent germination, which has been depicted as a problem on inbred line breeding of strawberry, can be solved by selecting vigorous and productive plant from the early selection.
A New Cultivar Gypsophila paniculata 'Yeowon' with Hot Tolerance for Cut Flower
Cheong, Dong-Chun ; Jeong, Jong-Sung ; Lim, Hoi-Chun ; Song, Young-Ju ; Chang, Chi-Jin ; Choi, Chang-Hak ; Kang, Mi-Hyung ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 168~171
‘Yeowon’ a cultivar of Gypsophila paniculata was newly developed for cut flowers by Floriculture Resources Research Institute, Jeonbuk Agricultural Research and Extension Services, Korea. It was selected via a bud mutant (Gyp99 line) from ‘Bristol Fairy’ in 1999. Its several traits were evaluated from 2003 to 2004. It has traits of producing more nodes and primary branches. It also has thicker and stronger stems, shorter internode length, larger branching angle, and longer cut flower stalk than ‘Bristol Fairy’. Blooming of ‘Yeowon’ in summer cultivation was delayed by 13 days, compared to ‘Bristol Fairy’. Moreover, in the high temperature conditions, ‘Yeowon’ produced normal flowers with 2 pistils and 7.8 stamens, with little production of malformed flowers.
Evaluation of the Water Purification Capacity in Iris pseudacorus and Acorus calamu
Kim, Yoo-Sun ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 172~176
To evaluate water purification capacity of Iris pseudacorus and Acorus calamu, 5 kinds of water was compared with each other in respect to the growth reactions of plants and nitrogen- and phosphorous-removal capacity. The growth of I. pseudacorus was the best during August but began to decline around September and October, and also its growth was the best in undiluted Sonneveld solution. A. calamu showed a similar tendency to I. pseudacorus. In the case of nitrogen- and phosphorous-removal capacity, plants all showed high value in August when they can be flourish.
Effect of Horticultural Therapy Program Based on Reminiscence on the Psychological and Physiological Improvement of the Aged
Lee, Eun-Sook ; Cho, Moon-Kyoung ; Yoon, Ji-Won ; Son, Ki-Cheol ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 177~188
This study was aimed at comparing the effects of horticultural therapy based on the reminiscence technique with that of conventional horticultural therapy in order to improve the self-integration in the aged. A total of 27 subjects were selected among the aged through the S Elders Welfare Center in Jung-Gu, Seoul. The subjects were then divided into two groups: HTP (Horticultural Therapy Program Group) and HTPR (Horticultural Therapy Program based on Reminiscence Group), with 14 and 13 subjects, respectively. The subjects went through the horticultural therapy program 18 times, twice a week, from September to November 2004. The program for both HTP and HTPR was divided into two phases (each 9 times). For the HTPR, however, the program was divided so that reminiscence on the whole lifetime (from childhood to senescence and future plans) gradually deepened through the two phases. Psychological changes, such as self-integration, life satisfaction, depression, and self-esteem were measured three times before the commencement of the program and after each phase. On the other hand, physical changes were examined by measuring the blood pressure and heart rate of each subject before and after each program. After comparing the psychological changes by phase between the HTP and the HTPR, both groups demonstrated statistically significant improvement in the aspect of life satisfaction after phase 1, compared to how the subjects were before the horticultural program. Moreover, the HTP showed significant improvement in appreciating the past, and the HTPR in self-integration and self-esteem. In both HTP and HTPR, psychological changes in phase 1 kept showing positive improvement, resulting in the effects continuously sustained during phase 2. While the self-esteem in the HTP illustrated significant changes through phase 1 and 2, the degree of present life satisfaction toward the present in the HTPR improved after phase 2 as compared to that before horticultural program. In the comparison of the effects of both treatments after program, life satisfaction, self-esteem, and self-integration were more significantly improved in HTPR than those of in HTP, in which self-integration in HTPR was highly significantly improved. In addition, the systolic blood pressure and diastolic blood pressure in both groups significantly increased whereas their pulse rates went down, indicating of happiness and palpitation. Consequently, while both the HTP and the HTPR illustrated improvement in self-satisfaction and self-esteem, the HTPR in which the reminiscence technique based on the characteristics of the aged was applied demonstrated statistically more significant improvement in self-integration than HTP.
Formaldehyde Gas Removal Effects and Physiological Responses of Fatsia japonica and Epipremnum aureum according to Various Light Intensity
Kil, Mi-Jung ; Kim, Kwang-Jin ; Cho, Jung-Kun ; Park, Chun-Ho ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 189~196
The amount of formaldehyde removal was assessed according to various light intensity, and correlations between formaldehyde removal and photosynthesis factors were determined by potted Fatsia japonica and Epipremnum aureum. The amount of formaldehyde removal by potted F. japonica and E. aureum did not significantly increase with light intensity, whereas it had considerable differences between the light and the dark (0 μ㏖·m-2·s-1). The amount of formaldehyde removal by F. japonica and E. aureum was positively correlated with photosynthesis rate, but negatively correlated with intercellular CO₂ at 2 and 5 h after exposure. In addition, photosynthesis rate tended to decrease with time at high light intensity, which was attributable to the reduction of CO2 concentration in a chamber. Stomatal conductance and transpiration rate increased with light intensity during exposure of gaseous formaldehyde in a chamber, whereas intercellular CO₂ decreased. As a result, we considered that formaldehyde removal by potted plants was little affected by indoor light intensity (20-60 μ㏖·m-2·s-1).
Determination of Sesamin in Sesame Dregs by High Performance Liquid Chromatography
Kim, Hye-Min ; Lee, Jeong-Min ; Park, Jun-Yeon ; Lee, Sul-Lim ; Lee, Sang-Hyun ;
Korean Journal of Horticultural Science and Technology, volume 26, issue 2, 2008, Pages 197~201
High performance liquid chromatography (HPLC) was used for the analysis of sesamin, the main antioxidant compound of sesame (Sesamum indicum L.), in sesame dregs. Reverse-phase system using a binary isocratic of methanol and deionized water (70:30) and UV detection at 290 ㎚ were performed. The contents of sesamin in the sesame dregs from Korea and China were 1.45 and 1.60 ㎎·g-1, respectively. The assay was successfully applied to quantify sesamin in the sesame dregs and to present the recycling possibilities of inefficiently used resources as agricultural by-products.