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湿地松抗松针褐斑病机制研究——松针组织结构和松脂含量分析(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
1991年03期
Page:
24-30
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
RESISTANT MECHANISM OF SLASH PINE TO BROWN SPOT NEEDLE DISEASE -The Relationship between Needle Tissue Structures and Resin Contents of Slash Pine and Disease Resistance
Article ID:
1000-2006(1991)03-0024-07
Author(s):
Ye Jianren
Department of Forestry
Keywords:
Pinus elliattii Brown spot needle disease Disease resistance Resistant mechanism
Classification number :
-
DOI:
10.3969/j.jssn.1000-2006.1991.03.005
Document Code:
A
Abstract:
This paper studied resistant mechanisms of slash pine to brown spot needle disease by comparing with the needle tissue structures and resin contents. Results indicated that densities, opening diameters and structures of stomata, as well as sizes, arrangements and densities of mesophyll cells had no obvious difference between resistant and susceptible clones. But, mesophyll levels, numbers of resin duct and resin contents of resistant clones were evidently thicker, more and higher than those of susceptible clones. There were no differences in the features of bundle endodermis and transfusion tissue. Histopathological analysis showed that the hyphae developed only in mesophyll tissues and did not get into endodermis. The hyphae distributed mainly near the propagation bodies, but, in the susceptible clones the hyphae may be seen also at far from propagation bodies.

References

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Last Update: 1900-01-01