The researches about the classification and identification of their species and varieties have provided an early, subservient and selective index for breeding work.
其种间或品种间的分类鉴定和亲缘关系的研究为育种工作提供了一个早期的、辅助的、选择性的指标。
2
The analysis all of the experiment data indicate that the harvest index can be as a standard of selection of the early separate generations of the wheat breeding.
整个试验数据的分析表明：收获指数可以作为小麦育种早期分离世代对产量性状进行选择的一个标准。
3
So the important basis that the dissection structure of the poplar timber can be cultivated as the index, seed selection breeding and orientation of appraising the poplar material, quality.