运用石蜡切片法对三个倍性盾叶薯蓣营养器官的解剖结构进行比较研究。结果表明,不同倍性盾叶薯蓣的结构差异主要表现在叶片厚度、栅栏组织厚度、栅栏组织厚度/海绵组织厚度(P/S)、栅栏组织厚度/叶片厚度(P/L)、茎维管束中导管所占比例(VR)以及根状茎周皮厚度,其中栅栏组织厚度、P/S、P/L和VR在三倍体植株中表现最高,叶片厚度和周皮厚度则是四倍体植株表现最高,多倍体植株的表现总体优于二倍体植株。

To provide attestation for cultivation of good germplasm of Dioscorea zingiberensis,the anatomic structure of vegetative organs of three ploidies D. zingiberensis,diploid (2x=20),triploid (3x=30) and tetraploid (4x=40) were comparably studied by paraffin method.The results showed that the structural differences among three ploidies of D. zingiberensis were leaf thickness,palisade tissue thickness,P/S,P/L,VR and periderm thickness.The triploid D. zingiberensis had the largest palisade tissue thickness,P/S,P/L and VR,while the tetraploid had the largest leaf thickness and periderm thickness.The multiploid put up stronger predominance than diploid as a whole.