wood ray

同根派生

The height of uniserial wood ray of P.armand was one to eighteen cells and that of P. prokoraiensis was one to sixteen cells.
华山松单列木射线细胞高度为1-18个细胞,前红松为1-16个细胞。
The relationship between the proportion of wood ray, the proportion of resin and the proportion of tracheid was significant.
术射线比量、树脂道比量和管胞比量都受到中等水平的遗传控制，无性系重复力分别是：0.;571、0
Wood rays of P. armand and P. prokoraiensis on tangential section both had two shapes,that was, uniserial wood ray and spindle wood ray.
华山松与前红松弦切面上的木射线均呈两种状态,即单列木射线和纺锤形木射线;
The wood ray tissue were heterogeneous, uniseriate and multiseriate rays, the wood longitudinal parenchyma were wheel bound shape and ring canal bunchiness.
射线组织异型单列及多列，轴向薄壁组织轮界状及环管束状；
Both honeycombing and surface and end checks usually originate along the wood rays since these are planes weakness.
蜂窝和表、端裂二者通常都是沿着射线发生，因为这里的平面薄弱。