文献类型：期刊文献

中文题名：水分胁迫对短枝型果树光合作用的非气孔限制

英文题名：The photosynthetic nonstomatal limitatoin of spur-apple yong trees under water stress

作者：王孝威[1];段艳红[2];曹慧[1];郑王义[3]

第一作者：王孝威

机构：[1]山西农业大学;[2]平原大学;[3]山西省农业科学院小麦研究所

第一机构：山西农业大学,山西太谷030801

年份：2003

卷号：23

期号：9

起止页码：1609-1613

中文期刊名：西北植物学报

外文期刊名：Acta Botanica Boreali-occidentalia Sinica

收录：CSTPCD;;CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：短枝型果树;水分胁迫;光合速率;非气孔限制

外文关键词：spur-apple tree; water stress; photosynthesis; nonstomatal limitation

摘要：水分胁迫使叶片相对含水量降低,气孔阻力增大.水分胁迫光合速率的下降除受气孔因素影响之外,随着胁迫时间的延长和胁迫程度的加剧,水分胁迫导致O-·2累积,H2O2含量增加,从而引发膜脂过氧化,造成膜渗漏,质膜相对膜透性增大,膜脂过氧化产物MDA含量升高,由膜系统破坏而诱发的非气孔因素成为光合速率下降的主要原因.
The photosynthetic nonstomatal limitation of spurapple young trees in water stress were studied in pot cultivation. The results showed that under water stress, the relative water content and chlorophyll content decreased greatly with the increase of stress time. However, the stomatal resistance increased. In the early period, the decline of photosynthetic rate was due to the stomatal limitation. With the duration of water stress, the contents of O-·2, H2O2, MDA and PMP increased significantly. So it is concluded that nonstomatal limitation of Pn in spurapple trees induced by water stress had significant relationship with the membrane damage. 