Effects of Seasonal Dynamics on Root Morphological Traits of Three Species of Spiraea salicifolia
In order to explore the effects of seasonal dynamics on the root morphological traits of three species of Spiraea salicifolia,Spiraea × bumalda cv.Gold Flame,SB,Spiraea japonica Gold Mound,SJ and Spiraea thun-bergii Bl.,ST were used as experimental materials.Their roots were collected in spring,summer and autumn,and the diameter,specific root length,tissue density,specific surface area and branching ratio of different root orders of three species of Spiraea salicifolia were measured.The results showed that the variation trend of the diameter of the three species of Spiraea salicifolia was summer>autumn>spring,and the variation trend of the specific sur-face area was autumn>summer>spring.The variation trends of specific root length,tissue density and branching ratio were inconsistent,which reflected the adaptability differences of plant root morphological traits to different sea-sonal environments.