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青钱柳种子次生休眠的发生及贮藏物质的变化(PDF)

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

Issue:
2006年02期
Page:
99-102
Column:
研究论文
publishdate:
2006-02-20

Article Info:/Info

Title:
Induction of the Secondary Dormancy and Metabolism Changes of Storage Substances in Cyclocarya paliurus
Article ID:
1000-2006(2006)02-0099-04
Author(s):
SHANG Xu-lan XU Xi-zeng FANG Sheng-zuo*
College of Forest Resources and Environment Nanjing Forestry University, Nanjing 210037, China
Keywords:
Cyclocarya paliurus seeds Secondary dormancy Metabolism of substances
Classification number :
S722; Q945.6
DOI:
10.3969/j.jssn.1000-2006.2006.02.024
Document Code:
A
Abstract:
The study was to investigate the differential responses of germination and the changes of the storage substances during the stratification in Cyclocarya paliurus seeds imbibed in cold woodland. In the present study, the seeds were treated by the acid scarification, GA3 soaking or cold stratification. It was found that the primary dormancy of the seeds was relieved partially or entirely because they were under the natural environments such as rain, snow and so on. These seeds were suspended from the cold stratification, thus the primary dormancy became greater and even they entered the secondary dormancy owing to the integrated effects of all treatments. The induced rate of the secondary dormancy differed from the treatments and the incubation conditions. The germination percentage of seeds stratified in (23±2)℃ was 10.3%, while it was up to 44.7% after the acid scarification, GA3 soaking and cold stratification. The content of storage substances decreased slowly. However, the catabolism of storage substances was not very consistent with the changes of their enzymes, particularly in the lipase. It might be relative to the secondary dormancy.

References

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Last Update: 2013-05-20