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이영이,Jung Bong Kim,Ho Sun Lee,Young-A Jeon,Sok Young Lee,Chung Kon Kim 한국작물학회 2012 Korean journal of crop science Vol.57 No.1
The objective of this study was to rapidly evaluate fatty acids in a collection of millet (Panicum miliaceum subsp. miliaceum) of different origins so that this information could be disseminated to breeders to advance germplasm use and breeding. To develop the calibration equations for rapid and nondestructive evaluation of fatty acid content, near-infrared reflectance spectroscopy (NIRs) spectra (1104-2494 nm) of samples ground into flour (n=100) were obtained using a dispersive spectrometer. A modified partial least-squares model was developed to predict each component. For foxtail millet germplasm, our models returned coefficients of determination (R2) of 0.89, 0.89, 0.89, and 0.92 for palmitic acid, oleic acid, linoleic acid, and total fatty acids, respectively. The prediction of the external validation set (n=10) showed significant correlation between references values and NIRs values (r2=0.64, 0.90, 0.79, and 0.89 for palmitic acid, oleic acid, linoleic acid, and total fatty acids, respectively). Standard deviation/standard errors of cross-validation (SD/SECV) values were close to 3 (2.62, 2.40, 1.85, and 2.23 for palmitic acid, oleic acid, linoleic acid, and total fatty acids, respectively). These results indicate that these NIRs equations are functional for the mass screening and rapid quantification of the oleic and total fatty acids characterizing millet germplasm. Among the samples, IT153514 showed an especially high content of fatty acids (48.14 mg g-1), whereas IT123909 had a very low content (34.44 mg g-1).
영유아교사의 놀이성과 공감능력이 놀이지원역량에 미치는 영향
이영이,도미향 한국부모교육학회 2023 부모교육연구 Vol.20 No.4
The purpose of this study is to examine the correlation between playability, empathy ability, and play support competency of early childhood teachers, and the effect of playability and empathy ability of early childhood teachers on play support competency. For this study, a questionnaire was conducted for infants and toddlers in daycare centers and kindergartens nationwide, and data of 348 people were collected. For the results of the study, correlation analysis and multiple regression analysis were conducted using the SPSS 28.0 statistical program. The results of this study are as follows. First, for the level of playability, empathy, and play support competency of early childhood teachers, the level of playability was high, and the level of empathy and play support competency of early childhood teachers was also high. Second, there was a significant positive correlation between the play performance and play support competency of early childhood teachers, and a significant positive correlation between the empathy and play support competency of early childhood teachers. Third, the effect of play and empathy of early childhood teachers on play support competency was found to have a significant positive effect. These findings demonstrate that early childhood teachers' ability to support play is an important factor in childcare sites that are implementing play-based curriculum, and various studies that can be used in childcare sites should be activated to improve the playability and empathy of early childhood teachers. 본 연구는 영유아교사의 놀이성과 공감능력 및 놀이지원역량 간의 상관관계와 영유아교사의 놀이성과 공감능력이 놀이지원역량에 미치는 영향을 살펴보는 데 그 목적이 있다. 본 연구를 위해 전국의 어린이집, 유치원에 재직 중인 영유아 담임교사를 대상으로 설문조사를 실시하였고, 348명의 자료를 수집하였다. 연구의 결과는 SPSS 28.0 통계 프로그램을 활용하여 상관분석과 다중회귀분석을 실시하였다. 본 연구의 결과는 다음과 같다. 첫째, 영유아교사의 놀이성, 공감능력, 놀이지원역량의 일반적인 경향을 살펴본 결과 전체적으로 평균이 높은 것으로 나타났다. 둘째, 영유아교사의 놀이성, 공감능력, 놀이지원역량 간의 관계를 살펴본 결과 정적으로 유의미한 상관관계가 있는 것으로 나타났다. 셋째, 영유아교사의 놀이성, 공감능력이 놀이지원역량에 미치는 영향에 대해 살펴본 결과 영유아교사의 놀이성과 공감능력이 높을수록 영유아교사의 놀이지원역량에 긍정적인 영향을 미치는 것으로 나타났다. 이러한 결과를 통해 놀이중심 교육과정을 실행 중인 보육현장에서 영유아교사의 놀이지원역량이 중요한 요소임을 알고 영유아교사의 놀이성과 공감능력 향상을 위해 자율적인 놀이환경구성 및 보육현장에서 활용 가능한 다양한 연구가 활성화되어야 할 것이다.
초저온보존 및 인위노화 처리가 인삼 개갑종자의 발아율에 미치는 영향
이영이,이정윤,김장욱,백형진,윤문섭,Kotnala Balaraju 한국약용작물학회 2018 한국약용작물학술대회 발표집 Vol.2018 No.10
Background : Ginseng seeds are one of short-lived seeds species which loose their viability easily in the condition of conventional storage. Cryopreservation using liquid nitrogen (LN) has been recommended as a alternative storage for this kind of germplasm short lived or dessiccation-sensitive. This study was performed to find out whether cryopreservation could assure initial viability not only for seeds with high germination rate but also for seeds with low germination rate (in aging process). Methods and Results : In this work, 3 cultivars of dehisced ginseng seeds were artificial aged in the condition of 40℃, 95% RH during 6 hours with 3 hours-interval. The germination rate of ginseng seeds was decreased to the range of 71 - 94% of initial viability by artificial aging treatment. After 24 hours of vapor-LN exposure on both of artificial aged and non treated seeds as a cryopreservation, germination rate for each cultivar was decreased with the range of 76 - 95% of initial viability. While the decreasing patterns of germination rate for each cultivar showed similar curves between before and after vapor-LN exposure, the aging effects could be slightly little by cryopreservation for 3 cultivars of ginseng seeds. Conclusion : From the above results, we may suggest that cryopreservation could be recommened for storage tool of dehisced ginseng seeds even with low viability also and expected to make slower seed aging process during preservation period through further study.