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강석범,양은영,조명철,Takeshi Tajima,Tsung Han Lin,Shih-Wen Lin,Yen-Wei Wang,Cynthia Kung Man Yee,Derek Barchenger,Roland Schafleitner 한국국제농업개발학회 2021 韓國國際農業開發學會誌 Vol.33 No.2
본 연구는 세계채소센터의 고추 유전자원들에 대한 침수조건에서 생육특성을 조사해 침수 저항성 자원을 선발하기 위해 수행하였다. 세계채소센터 유전자원센터에서 보유중인 4종의 고추 8자원을 선발하여 유리온실에서 종자를 파종하여 2개월 간 육묘한 후 본 실험을 위해 비닐하우스로 이동 후 침수시험을 수행하였다. 시험에 이용된 고추는 고온인 여름철에 시험이 수행되어 침수에 대한 반응이 매우 빠르게 나타났다. 1. 침수 처리구에서 생육이 전체적으로 감소 되었으나 저항성 자원들은 대조구와 비교하여 초장에 있어 유의성 있는 차이를 보이지 않았다. 2. 침수 처리 후 고추자원의 엽온 조사에서는 No. 29 (9656-13) 자원을 제외한 모든 침수구에서 엽온이 대조구에 비해 높게 유지되었다. 3. 감수성 자원들은 위조지수가 1.5 이상을 나타냈으나 내침 수성 자원들은 0.5로 낮게 유지되었다. 4. SPAD 값을 조사한 결과에 있어서는 침수로 인해 전체적으로 대조구에 비해 10% 낮은 수치를 나타냈다. 5. Proline 함량에 있어서는 침수구에서 전체적으로 Proline 함량이 높게 나타났으나 내침수성이 강했던 No. 8과 22는 대조구와 유의차가 없이 낮았다. 6. 침수자원들에 대한 침수와 고온에 따른 화분활력 조사에서는 침수에서 일부 자원의 화분활력 감소를 확인하였으며, 고온처리에서 처리구 대부분의 화분 활력이 유의하게 감소하는 결과를 나타냈다. 7. 본 시험을 통해 이번 시험의 고추자원 중 Capsicum bacatum 종인 No. 8 (VI028788), No. 12 (VI044312) 자원 이 침수저항성이 강한 자원으로 판단되어 1차 선발하였다. Chili pepper (Capsicum sp.) is an important crop across tropical, subtropical, and temperate regions of Asia. There is interest in producing pepper in rice-based cropping systems, which are subjected to long periods of waterlogging conditions. The objective of our study was to characterize the response of previously reported tolerant and sensitive Capsicum accessions to waterlogging under subtropical conditions. We tested eight chili pepper accessions from four species (Capsicum annuum, C. baccatum, C. chacoense, and C. frutescens) for their response to waterlogging stress. Plants exposed to stress treatment were subjected to waterlogging in pots for 5 days from July 27, 2020 to July 31, 2020 after transplantation by placing the pots in trays filled with water up to a height of 20 cm, while control plants were normally irrigated. At five days after waterlogging, most accessions showed reduced plant width growth, while some accessions, No. 8 (VI028788) and No. 12 (VI044312) showed slight reduction compared to control plants. Leaf temperatures were significantly higher in flooded plants compared to the control plants, except in accession No. 29 (9656-13). The wilt index of waterlogging sensitive accessions was greater than 1.5, while tolerant accessions had wilt scores of less than 0.5. For all accessions, the soil plant analysis development (SPAD) value was reduced by 10% under stress compared to control plants. Proline content in flooded plants was significantly higher than that in control plants with No. 8 (VI028788) and No. 22 (PBC481) showing the smallest increase. Pollen viability in some accessions was decreased after waterlogging. However, the effect of high temperature was much greater in most accessions as expected. Based on these results, waterlogging stress accessions No. 8 (VI028788) and No. 12 (VI044312) were identified as having the potential for tolerance to waterlogging stress.
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Ueno Masaki,Toriumi Emi,Yoshii Aki,Tabata Yuki,Furudate Takeshi,Tajima Yusuke 대한척추외과학회 2022 Asian Spine Journal Vol.16 No.3
Study Design: Retrospective cohort study.Purpose: To evaluate the efficacy of our current prophylactic strategy by investigating the incidence of subsequent vertebral body fractures (SVBFs) following balloon kyphoplasty (BKP).Overview of Literature: Although extensive studies have investigated the risk factors for SVBFs after BKP, few have reported on postoperative therapies to prevent SVBFs and have evaluated their effectiveness.Methods: This study enrolled 273 patients who underwent an initial BKP. To treat osteoporosis, parathyroid hormone (PTH) administration was started 1–2 weeks before BKP and continued for at least 6 months postoperatively. Corsets were applied for 3 months after the procedure. Rehabilitative interventions, including hip range-of-motion training, muscle strengthening exercises, and motion/posture instruction, were started from the preoperative assessment time point and resumed 3 hours postoperatively. Corsets were used in all patients. Therefore, no grouping based on corset use was performed. PTH was used in 180 patients, and they were divided into the following two groups: PTH user group and PTH nonuser group. Rehabilitative interventions were provided to all patients for a median duration of 17 days. Patients who underwent rehabilitative intervention for <17 and ≥17 days were included in the short-term and long-term intervention groups, respectively. The incidences of SVBFs for these four groups were compared.Results: SVBF occurred in 29 patients (10.6%). The SVBF incidence among patients who were prescribed all three prophylactic measures was 6.2%. The PTH user group had a significantly lower incidence of distant vertebral body fractures as compared to the PTH nonuser group. The long-term rehabilitation group had a significantly lower incidence of SVBFs and adjacent vertebral body fractures within 50 postoperative days than the short-term group.Conclusions: A 17-day or longer rehabilitative intervention may lower the risk of early adjacent vertebral body fractures, and the use of PTH may reduce the risk of distant vertebral body fractures.
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