【摘要】 通过透射电子显微镜观察不同低温处理下纹荚、厚荚、黑木相思的叶片细胞超微结构的变化情况,结果表明:低温对相思类树种叶片细胞超微结构有不同程度的影响。不同相思种的抗寒性存在差异,抗寒性排序为:黑木相思>纹荚相思>厚荚相思。更多还原

【Abstract】 Under transmission electron microscope,the cell ultrastructure of three species of Acacia was observed,which had been treated with by different low temperatures.The observation showed that low temperature treatment had effect in different degrees on the ultrastructure of these Acacia.These three Acacia could tolerate 0 ℃;At-5 ℃,the ultrastructure of Acacia melanoxylon was damaged greatly,the ultrastructure of the rest two species of Acacia were destroied completely.There was difference in the degree of damage.The cold resistance sequence of the three species is Acacia melanoxylon>A.Aula coarpa>Acacia crassicarpa.更多还原