小麥의 初期世代에 있어서 主要農業形質의 選拔効果

Selection Efficiency on Major Agronomic Traits in Early Generations of Winter Wheat

This experiment intended to reveal the relationship between F₂ individuals and F₃ lines in important agronomic traits to clarify the effectiveness of early generation selection in wheat breeding program. Correlation analysis between F₂ individual and F₃ lines indicated that the plant height, heading date and winter hardiness may be improved effectively through early generation selection and with remarkable genetic advances by selection. Early generation selection for yield potential varied depending upon the cross combination tested, but, generally speaking, correlation coefficients estimated between F₂ and F₃ generation, hertabilities and estimated genetic advances were low enough to conclude that its selection would be neglible in early generation. It was noted that the winter hardiness were the fundamental traits needed to create desirable population, since those winter hardy lines found to be more tillering and high yielding than the winter susceptible lines.