There were very small effect of seed source and no definite geographic pattern in tracheid length.

管胞长度的种源区和产地效应很小，无一定的地理变异趋势。

youdao

There were very small effect of seed source and no definite geographic pattern in tracheid length.

管胞长度的种源区和产地效应很小，无一定的地理变异趋势。

youdao