Effects of Drought Stress on Photosynthetic Characteristics of Pioneer Plant Neyraudia reynaudiana on Soil and Water Conservation
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Effects of Drought Stress on Photosynthetic Characteristics of Pioneer Plant Neyraudia reynaudiana on Soil and Water Conservation
Vol. 25, Issue 6, (2011)
作者机构:
1. 福建农林大学林学院
2. 福建农林大学森林与环境研究所
3. 福建杉木研究中心
作者简介:
基金信息:
DOI:
CLC:
Published:2011
稿件说明:
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CAI Li-ping, WU Peng-fei, HOU Xiao-long. Effects of Drought Stress on Photosynthetic Characteristics of Pioneer Plant Neyraudia reynaudiana on Soil and Water Conservation[J]. 2011, 25(6).
DOI:
CAI Li-ping, WU Peng-fei, HOU Xiao-long. Effects of Drought Stress on Photosynthetic Characteristics of Pioneer Plant Neyraudia reynaudiana on Soil and Water Conservation[J]. 2011, 25(6).DOI:
Effects of Drought Stress on Photosynthetic Characteristics of Pioneer Plant Neyraudia reynaudiana on Soil and Water Conservation
摘要
以水土保持先锋植物类芦为研究材料
通过4个不同梯度干旱胁迫的盆栽试验
测定类芦的光合色素、叶绿素荧光参数和光合参数
研究干旱胁迫对类芦的光合特性的影响。结果表明:中度、轻度干旱胁迫类芦叶绿素含量增加
叶绿素a/b比值下降
干旱胁迫下叶绿素荧光参数F0、Fm、Fv提高
Fv/Fm、Fv/F0下降。类芦叶片的胞间CO2浓度随干旱程度加重而逐渐增加
日变化表现为上午缓慢上升
下午快速上升
到16:00达到最高。净光合速率、气孔导度、蒸腾速率日变化均表现为单峰型
为先升后降
12:00达到高峰
日均值随着干旱程度加重而逐渐下降。中度、轻度干旱胁迫下WUE提高
重度干旱WUE稍有下降
类芦具有较强的耐干旱能力。
Abstract
Taking pioneer plant Neyraudia reynaudiana on soil and water conservation as test material
with pot experiment test for four level drought stress to study the effects of photosynthetic characteristics of Neyraudia reynaudiana with photosynthetic pigments
chlorophyll fluorescence parameters and photosynthetic parameters.Results showed that chlorophyll content of Neyraudia reynaudiana increased and chlorophyll a/b decreased under moderate and mild drought stress.Chlorophyll fluorescence parameters F0