ZHANG Hai-ting,ZHANG Lin-sen,HU Jing-jiang,et al.The Response of Pressure Volume Curve Water Parameters of Two Apple Root Stocks to Drought Stress[J].Northern Horticulture,2012,36(13):21-23.
两种苹果砧木PV曲线水分参数对干旱胁迫的响应
- Title:
- The Response of Pressure Volume Curve Water Parameters of Two Apple Root Stocks to Drought Stress
- 文章编号:
- 1001-0009(2012)13-0021-03
- 分类号:
- S 661.103.4
- 文献标志码:
- A
- 摘要:
- 设定适宜水分和重度干旱2种水分处理，对2种苹果砧木进行PV曲线测定试验，研究了干旱胁迫对平邑甜茶和楸子2种苹果砧木PV曲线水分参数的影响。结果表明：干旱胁迫导致了平邑甜茶和楸子地上部分气体交换受到影响。在干旱条件下，楸子的ψstlp 、ψssat、 RWCtlp、 ROWCtlp 、ε′值与平邑甜茶相比较均处于较低水平，说明楸子耐水分胁迫能力、细胞保水力较强和细胞壁弹性较大。对PV曲线水分参数进行隶属函数综合评价得出的△值为楸子大于平邑甜茶。PV曲线水分参数能够随着植物所处的环境，做出相应的调整。在适宜水分和重度干旱条件下，楸子所体现出的输水策略优于平邑甜茶。对于PV曲线水分参数研究发现，楸子在膨压保持方面与平邑甜茶相比，其抗旱性优于平邑甜茶。
- Abstract:
- Setting two water levels,appropriate water and severe water stress，pressure-volume curve on two root apple stocks hydraulic architecture of Malus hupehensis and Malus prunifolia were tested，and the effects of water deficit on pressure-volume curve water parameters of Malus hupehensis and Malus prunifolia were studied.The results showed that water deficit affect gas exchange of the ground part.On the condition of severe drought，compared values of ψstlp ，ψssat， RWCtlp， ROWCtlp，ε′of Malus prunifolia with Malus hupehensis，Malus prunifolia on a low level.It showed that Malus prunifolia had better abilities resistance to water stress and keeping water of seeding，more elastic cell wall.Used by the subordinate function comprehensive estimating analysis pressure-volume curve water parameters,△values of Malus prunifolia was larger than Malus hupehensis.Pressure-volume curve water parameters in plants could adjust accordingly with environment.On the condition of suitable soil moisture and severe drought，Malus prunifolia reflects the water strategy which optimal Malus hupehensis.After studied with pressure-volume curve water parameters，it showed that the abilities of maintaining turgor of Malus prunifolia was better than Malus hupehensis and the drought resistance which optimal Malus hupehensis.
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备注/Memo
第一作者简介：张海亭（1986-），男，山东淄博人，硕士，研究方向为苹果水力结构。E-mail:haiting686@yahoo.com.cn.
责任作者：张林森（1964-），男，江苏人，博士，副教授，研究方向为苹果水肥生理生态。E-mail：linsengzhang@163.com.
基金项目：农业部‘948’资助项目（2011-Z24）；国家苹果产业技术体系资助项目（CARS-28）。
收稿日期：2012-03-30