摘要
Genetic effects analysis of grain traits was conducted based on the additive-dominance genetic model (Zhu, 1992, 1993) for the quantitative traits. Incomplete diallel crosses from early season indica rice (Oryza sativa L. ) were made using eight parents with short grain shape (Guanglu’ai 4 et al. ) as females and five parents with long grain shape (Xiangzaoxian 3 et al. ) as males. Fseedlings and their parents were transplanted into the field at 15×15cm spacing, with three replications. Seeds from 10 plants in the middle of plot were used to measure the agronomic traits, including grain length, grain width, grain thickness, ratio of grain length to
