인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
피인용 0
초록·키워드
Background: Evaluating root traits at six years of age delays selection in ginseng (Panax ginsengC. A. Meyer) breeding. This study developed a candidate empirical index based on aerial traits for the early selection of lines with high root fresh weight.
Methods and Results: Aerial traits and root fresh weight were measured in 86 six-year-old lines in 2022 and 57 in 2023. Leaf length and width were used to calculate leaflet size proxy (LSP), whereas the product of LSP and the number of stems was used to derive a stem-weighted leaf area proxy (SLAP). Standardized regression assigned normalized weights of approximately 40% to stem diameter and 60% to SLAP in both years (R² = 0.618–0.708), yielding the index 0.4·Z (stem diameter) + 0.6·Z (SLAP). Applying the weights across years retained correlations of 0.786–0.841 with root fresh weight, and internal cross-validation showed that the two-trait model outperformed the single-trait models. In a preliminary application to 37 four-year-old lines, SLAP was replaced with a petiole-weighted proxy (LSP × number of petioles). The lines were classified as promising (3), retained (16), and early elimination candidates (18).
Conclusions: Stem diameter and SLAP were positively associated with root fresh weight in six-year-old ginseng lines. The proposed index may serve as a preliminary screening tool; however, its ability to predict 6-year-old root fresh weight from traits measured at 4 years of age remains untested.
Methods and Results: Aerial traits and root fresh weight were measured in 86 six-year-old lines in 2022 and 57 in 2023. Leaf length and width were used to calculate leaflet size proxy (LSP), whereas the product of LSP and the number of stems was used to derive a stem-weighted leaf area proxy (SLAP). Standardized regression assigned normalized weights of approximately 40% to stem diameter and 60% to SLAP in both years (R² = 0.618–0.708), yielding the index 0.4·Z (stem diameter) + 0.6·Z (SLAP). Applying the weights across years retained correlations of 0.786–0.841 with root fresh weight, and internal cross-validation showed that the two-trait model outperformed the single-trait models. In a preliminary application to 37 four-year-old lines, SLAP was replaced with a petiole-weighted proxy (LSP × number of petioles). The lines were classified as promising (3), retained (16), and early elimination candidates (18).
Conclusions: Stem diameter and SLAP were positively associated with root fresh weight in six-year-old ginseng lines. The proposed index may serve as a preliminary screening tool; however, its ability to predict 6-year-old root fresh weight from traits measured at 4 years of age remains untested.
본문·목차
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