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Improvement of Tomato Seedling Quality under Low Temperature by Application of Silicate Fertilizer
Ngoc-Thang Vu(넉탕부),Anh-Tuan Tran(안추안트란),Thi-Tuyet-Cham Le(띠투엣참리),Jong-Kuk Na(라종국),Si-Hong Kim(김시홍),Jong-Man Park(박종만),Dong-Cheol Jang(장동철),Il-Seop Kim(김일섭) (사)한국생물환경조절학회 2017 시설원예‧식물공장 Vol.26 No.3
규산 시비가 토마토 플러그 묘소질에 미치는 영향과 묘의 저온저장시 규산의 저온장해 경감효과를 검토하였다. ‘Rapito’품종을 공시하여 30일간 32구 규격의 플러그 트레이에서 육묘한 뒤, 여섯 개의 규산 처리농도구 (8, 16, 32, 64, 128 및 256mM)를 설계하여 20일 동안 주 2회 관주 처리한 뒤, 묘소질을 대조구와 비교하였다. 처리 농도는 16mM과 32mM 처리가 초장, 엽면적, 생체중, T/R율 및 근권부 발육 등 대부분의 생육지표에서 타 처리구에 비해 양호했으며, 특히 16mM의 농도에서 가장 좋은 묘소질을 보였으나, 64mM 이상의 고농도에서는 대조구에 비해 전반적으로 생육이 억제되는 경향을 보였다. 토마토 묘의 생리적 반응에서 엽온에서는 처리구별 차이가 나타나지 않았으나, 증산율은 32mM이상의 농도 처리구에서 기공확산 저항이 증가하면서 증산율이 감소되는 경향을 보였다. 또한, 처리 횟수에 따른 효과를 검토하기 위해 16mM농도의 규산을 20일 동안 6, 10, 20회 관주처리 한 결과, 대부분의 생육지표에서 처리 횟수간에는 큰 차이가 없었으나, 무처리구에 비해 묘소질이 향상되었으며, 특히 뿌리표면적, 근장, root tip수등 근권부의 생육이 현저히 증가하였다. 아울러 규산처리가 저온저장시 토마토 묘의 저온장해를 감소시키는 효과가 있음을 확인하였다. The object of this study was to improve tomato seedling quality in low temperature(below 7, 10℃ during night time or daily mean air temperature was 18℃) by application of silicate fertilizer. Six different silicate fertilizer concentrations (8, 16, 32, 64, 128, and 256mM) or water as the control were applied to tomato seedlings twice a week for 20 days. Positive effects were observed in the growth parameters of the seedlings treated with 16 and 32mM silicate fertilizer; the most effective concentration of silicate at which seedlings showed the best performance was 16mM. However, a high concentration of silicate (256mM) caused negative effects on the growth. The transpiration rate decreased alongside with the increase of silicate concentration up to 32mM, possibly due to the increased stomatal diffusive resistance. Silicate stimulated the growth and development of tomato seedlings, resulting in increased growth parameters and root morphology. However, no significant differences were observed among treatment numbers of soil-drenching wuth the silicate (6, 10, or 20 times with 16mM) for 20 days, suggesting that silicate treatment with 6 times may be sufficient to induce the silicate effects. The application of 16mM of silicate fertilizer reduced relative ion leakage and chilling injury during low temperature storage. In addition, the seedlings treated with silicate fertilizer recovered faster than those without silicate treatment after low temperature storage.
Improvement of Tomato Seedling Quality under Low Temperature by Application of Silicate Fertilizer
넉탕부,안추안트란,띠투엣참리,라종국,김시홍,박종만,장동철,김일섭,Vu, Ngoc-Thang,Tran, Anh-Tuan,Le, Thi-Tuyet-Cham,Na, Jong-Kuk,Kim, Si-Hong,Park, Jong-Man,Jang, Dong-Cheol,Kim, Il-Seop The Korean Society for Bio-Environment Control 2017 시설원예‧식물공장 Vol.26 No.3
규산 시비가 토마토 플러그 묘소질에 미치는 영향과 묘의 저온저장시 규산의 저온장해 경감효과를 검토하였다. 'Rapito' 품종을 공시하여 30일간 32구 규격의 플러그 트레이에서 육묘한 뒤, 여섯 개의 규산 처리농도구 (8, 16, 32, 64, 128 및 256mM)를 설계하여 20일 동안 주 2회 관주 처리한 뒤, 묘소질을 대조구와 비교하였다. 처리 농도는 16mM과 32mM 처리가 초장, 엽면적, 생체중, T/R율 및 근권부 발육 등 대부분의 생육지표에서 타 처리구에 비해 양호했으며, 특히 16mM의 농도에서 가장 좋은 묘소질을 보였으나, 64mM 이상의 고농도에서는 대조구에 비해 전반적으로 생육이 억제되는 경향을 보였다. 토마토 묘의 생리적 반응에서 엽온에서는 처리구별 차이가 나타나지 않았으나, 증산율은 32mM이상의 농도 처리구에서 기공확산 저항이 증가하면서 증산율이 감소되는 경향을 보였다. 또한, 처리 횟수에 따른 효과를 검토하기 위해 16mM농도의 규산을 20일 동안 6, 10, 20회 관주처리 한 결과, 대부분의 생육지표에서 처리 횟수간에는 큰 차이가 없었으나, 무처리구에 비해 묘소질이 향상되었으며, 특히 뿌리표면적, 근장, root tip수등 근권부의 생육이 현저히 증가하였다. 아울러 규산처리가 저온저장시 토마토 묘의 저온장해를 감소시키는 효과가 있음을 확인하였다. The object of this study was to improve tomato seedling quality in low temperature(below 7, $10^{\circ}C$ during night time or daily mean air temperature was $18^{\circ}C$) by application of silicate fertilizer. Six different silicate fertilizer concentrations (8, 16, 32, 64, 128, and 256mM) or water as the control were applied to tomato seedlings twice a week for 20 days. Positive effects were observed in the growth parameters of the seedlings treated with 16 and 32mM silicate fertilizer; the most effective concentration of silicate at which seedlings showed the best performance was 16mM. However, a high concentration of silicate (256mM) caused negative effects on the growth. The transpiration rate decreased alongside with the increase of silicate concentration up to 32mM, possibly due to the increased stomatal diffusive resistance. Silicate stimulated the growth and development of tomato seedlings, resulting in increased growth parameters and root morphology. However, no significant differences were observed among treatment numbers of soil-drenching wuth the silicate (6, 10, or 20 times with 16mM) for 20 days, suggesting that silicate treatment with 6 times may be sufficient to induce the silicate effects. The application of 16mM of silicate fertilizer reduced relative ion leakage and chilling injury during low temperature storage. In addition, the seedlings treated with silicate fertilizer recovered faster than those without silicate treatment after low temperature storage.
족삼리(足三里) 자침이 고혈압환자의 혈압과 내피세포 의존성 혈관확장반응에 미치는 영향
배형섭,신애숙,박성욱,손일석,정우상,문상관,박정미,고창남,조기호,김영석,Bae, Hyung-Sup,Shin, Ae-Sook,Park, Seong-Uk,Sohn, Il-Suk,Jung, Woo-Sang,Moon, Sang-Kwan,Park, Jung-Mi,Ko, Cham-Nam,Cho, Ki-Ho,Kim, Young-Suk 대한한방내과학회 2008 大韓韓方內科學會誌 Vol.29 No.3
Objectives : The objective of this study was to assess the effect of acupuncture applied at the ST36 point on blood pressure and endothelial dependent vasodilation in hypertensive patients. Methods : 24 hypertensive patients were recruited and randomized to a study group (12 subjects) or a control group (12 subjects). Both groups took FMD (endothelial-dependant, flow-mediated dilation) measurement and then acupuncture needles were inserted at ST36 for the study group. In the control group, they took sham acupuncture as a control. FMD was rechecked after 10-min acupuncture treatment. Blood pressure was measured before and after acupuncture treatment. Results : FMD increased significantly in the study group after acupuncture (9.5${\pm}$2.0% to 11.1${\pm}$2.2%), but not in the control group. In both groups, there were no changes in blood pressure and heart rate. Conclusions : Acupuncture on ST36 appears to improve endothelial dysfunction of hypertensive patients and this might result from inducing activation of endothelium-derived nitric oxide.