root collar meaning in English
根颈
Examples
- After long terms culture under al stress , the root system of untransformed control was soft and rotted and covered with purple bacterium . we compared root tip , root collar and root - stem transition region and found the transgenic plants have relative normal root system
铝溶液长期处理的根系外部形态具有较大差异，从根尖、根中部和根茎交接处做了比较，发现对照的根系软腐并有紫色菌着生，而转基因植株根系相对保持正常。