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水分胁迫下榆科3种幼苗生理生化指标的变化(PDF)

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

Issue:
2005年02期
Page:
47-50
Column:
研究论文
publishdate:
2005-02-20

Article Info:/Info

Title:
Variation of Physiological and Biochemical Indexes in Seedlings of Three Ulmaceae Species Under Water Stress
Article ID:
1000-2006(2005)02-0047-04
Author(s):
WEI Xiao-li12 XU Xi-zeng1* ZHU Shou-qian2
1. College of Forest Resources and Environment Naniing Forestry University, Nanjing 210037, China; 2. Forestry College Guizhou University, Guiyang 550025, China
Keywords:
Ulmaceae species Water stress Seedling Physiological and biochemical indexes Drought-resistance ability
Classification number :
S718
DOI:
10.3969/j.jssn.1000-2006.2005.02.011
Document Code:
A
Abstract:
For knowing the reaction and adaptation of Ulmaceae species in karst areas to water stress and comparing their drought-resistant ability, the variation of physiological and biochemical indexes in seedlings of Pteroceltis tatarinowii, Celtis sinensis and Ulmus parvi f olia were studied by experiments of simulating water stress. The results showed the tendency of physiological and biochemical indexes in three seedlings under water stress were similar. The relative water deficit(RWD), plasma membrance permeability, proline content and injured degree of membrance raised as increasing of water stress level, and the xylem water potential (~w) decreased. The content of MDA raised first, declined then, and increased continually later, but the variation level of indexes in three seedlings were different. By coordinate composite evaluation,the results indicated that the drought-resistance ability of Ulmus parvifolia seedlings were first, the Pteroceltis tatarinowii seedlings were second, and the Celtis sinensis seedlings were inferior.

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Last Update: 2013-05-20