|Table of Contents|

Comparative Analysis on Vessel Elements in Branch of Pear Rootstocks (Pyrus spp.)(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2016年08
Page:
24-28
Research Field:
Publishing date:

Info

Title:
Comparative Analysis on Vessel Elements in Branch of Pear Rootstocks (Pyrus spp.)
Author(s):
WANG Xiujuan; MA Chunhui; WANG Ran; SONG Jiankun; LI DingLi; YANG Yingjie
（College of Horticulture，Qingdao Agricultural University，Qingdao,Shandong 266109）
Keywords:
pear rootstocks; vessel element; morphological observation
PACS:
-
DOI:
10.11937/bfyy.201608006
Abstract:
In order to explore the dwarfing mechanism in pear trees,taking standard tree (P.betulifolia，P.calleryana，P.pyrifolia，P.ussuriensis，P.xerophila，P.pashia，P.phaeocarpa，P.armeniacaefolia, and P.salicfolia) as control，the shape and size of vessel elements in annual branches of dwarf tree (‘PY-9’，‘BA-29’,‘OHF-87’，‘E7-7’，‘ZhongaiⅡ’and ‘FOX11’) were examined using tissue segregation procedure，micrograph and biometric statistical method.The results showed that there were various types of vessels in different pear rootstocks.The characters of vessel elements，pitting pattern，types of perforation plates，frequency of different tail types of vessel element and frequency of different end wall tilt types of vessel element in stem of dwarf tree were basically consistent with those of standard trees，but the length and width of vessel element in dwarf trees were significantly smaller than those of standard trees.The mean length at 331.6-399.3 μm，average width in 31.2-36.0 μm for dwarf type，the mean length in those standard trees at 275.1-300.8 μm and average width in 26.1-29.9 μm.The vessel element in dwarf pear rootstocks showed smaller vessel elements，which might be the important reason for dwarfing phenomenon in dwarf pear rootstocks.

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Last Update: 2016-06-21