在松属、云杉属内寻找导管的观察报告

The Observation Report Looking for the Vessel in the Pinus and Picea

2006-2007年对油松Pinus tabulaeformis、樟子松Pinus sylvestris、白扦Picea meyeri、青青扦Picea wilsonii的根、茎木质部和叶解离观察,在松属Pinus L.的两种内发现了导管分子,其数量较多,在每张制片内都可找到若干。这些细胞的端壁平坦,并有单穿孔或复穿孔板,与较粗的管胞直径、长度、纹饰基本一样。还有一些细胞介于管胞和导管的中间形态,看得出这些导管是相同类型管胞特化形成的。但在云杉属Picea Dietr的两种植物内未只有少数端壁平坦、有一个小具缘纹孔的管胞,未找到导管分子。此外,在四种植物内都有典型的木纤维和纤维化管胞。

In the 2006-2007,the xylem of root and stem of Pinus tabulaeformis,Pinus sylvestris,Picea meyeri,Picea wilsonii were soluted with the liquid of nitric acid-chromium acid and observated.The result:In the Pinus tabulaeformis and Pinus sylvestris,the vessel elements is exist,there is a pit or a perforation(or The compound bore hole ) on the horizontal wall of the vessel elements;In Picea meyeri,Picea wilsonii,the vessel were did not discover,only there is the bordered pit in the horizontal wall of the parts of the tracheids. It's the transfered type in the center of tracheid to vessel element probably.In addition,all of the four plants,there are fibertracheids and some tipycal fibers.