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水分胁迫下湿地松优良半同胞家系的光合特性响应研究(PDF)

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

Issue:
2007年02期
Page:
32-36
Column:
研究论文
publishdate:
2007-02-20

Article Info:/Info

Title:
Study on Response to Photosynthetic Characters of Slash Pine’s Half-sib Under Water Stress
Article ID:
1000-2006(2007)02-0032-05
Author(s):
TONG Fang-ping123 FANG Wei1 MA Lij-yi1 SONG Qing an2 3 LONG Ying zhong2 WU Ji-you2 YI Ai qin2 3 CHENG Yong2
1. College of Forest Resources and Environment Beijing Forestry University, Beijing, 100083; 2. Hunan Forestry Academy, Changsha 410004, Chinas; 3. Forest Tree Clonal Breeding Key Laboratory of Hunan Province, Changsha 410004, China
Keywords:
Slash pine Half-sib Photosynthetic character
Classification number :
S718. 43
DOI:
10.3969/j.jssn.1000-2006.2007.02.008
Document Code:
A
Abstract:
Through the tests of potted plants and measurement photosynthesis, this paper studies responses of photosynthetic character of slash pine~s half-sib under water stress. There are 7 families compared with general slash pine (ab. CK). The net photosynthesis, stomatal conductance, CO2 concentration inside the cell, transpiration, water utilization efficiency, carboxylation efficiency and photosynthetic quantum yield are measured under different water strees (slight water stress while soil water content is 55% to 60%, moderate water stress while soil water content is 35% to 40% and heavy water stress while soil water content is 20% to 25%). The law of photosynthetic character with water stress is that Pn, Cond, Ci, Tr, WUE, φ and CE of slash pine’s half sib drop with increased of water stress. The Pn, Ci, CE also drop line. It also shown that the wup go to up firstly, then drops after moderate water stress. TheCond and Tr tend to 0 with heavy water stress. The photosynthetic character value of slash pine’s halfsib is better than that of general slash pine. It is one of the physiological causes with fast growth and high yield of slash pine’s half-sib.

References

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Last Update: 2013-05-20