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	楸树品种间水分特征曲线主要参数比较与抗旱性评价
其他题名	Pressure-volume curves and drought resistance of Catalpa b ungei cultivars
	岑显超; 彭方仁; 陈隆升; 杨燕
来源期刊	浙江林学院学报
ISSN	1000-5692
出版年	2008
卷号	25 期号:6 页码:760-764
中文摘要	由于自花不孕、旱地造林技术不当等因素导致楸树Catalpa bungei资源急剧下降。利用水分特征曲线测定3个楸树品种（金丝楸,周楸2号,圆基长果楸）的11个水分特征参数,旨在为我国干旱、半干旱地区造林树种选择及进一步开发楸树资源提供理论依据。供试1年生楸树扦插苗分别进行Hoagland营养液＋120g·L^-1PEG6000模拟干旱胁迫处理（Ⅰ）及Hoagland营养液对照处理（Ⅱ）,处理1d后,取茎段用hammel逐渐升压连续测定法进行测定。结果表明,在饱和含水时的渗透势Psipi^100、组织充分膨胀时的压力势Psip^100、质外体水Vb、质外体水与共质体水比值Vb/Vf、质外体水相对含量CAW指标评价上金丝楸抗旱能力最强。利用抗旱性指数公式综合评价楸树品种的抗旱能力为：金丝楸Ⅱ〉周楸2号Ⅱ〉周楸2号Ⅰ〉金丝楸Ⅰ〉圆基长果楸Ⅱ〉圆基长果楸Ⅰ。因此旱地造林宜选用金丝楸,其为较耐旱的类型。表2参23
英文摘要	The Catalpa bungei resource has greatly diminished owing to self-incompatibility and improper planting in arid lands. To provide a theoretical foundation for afforestation in arid and semi-arid regions and to exploit the Catalpa resource, 11 parameters of water characteristics for three Catalpa cuhivars（＇Jin Si Qiu＇, ＇Zhou Qiu Ⅱ ＇, and ＇Yuan Ji Chang Guo Qiu＇） were determined using culm-water characteristic curves. Seedlings from cuttings of C. bungei were cuhured in Hoagland nutrient solution with 120 g·L^-1 polyethylene glycol（PEG） 6000（treatment I ） to simulate draught stress and without PEG （treatment Ⅱ ）. One day after treatment application, the stems were measured by Hammel＇s Method. Also draught resistance exponent functions were used for the analysis. Results from maximum osmotic potential at a water saturation point of psipi^100, sufficiency expanded osmotic potential of psip^100, apoplastic water volume （Vb）, the ratio of apoplastic water to free water （Vb/Vf）, and the relative apoplast water content （CAw） showed that ＇Jin Si Qiu＇ was most resistant to draught stress. Exponential functions for draught resistance of Catalpa cultivars for treat- ments I and Ⅱ were in the order：＇Jin Si Qiu＇ Ⅱ 〉＇Zhou Qiu＇ Ⅱ 〉＇Zhou Qiu＇ I 〉＇Jin Si Qiu＇ I 〉＇Yuan Ji Chang Guo Qiu＇ Ⅱ 〉＇Yuan Ji Chang Guo Qiu＇ I . So, ＇Jin Si Qiu＇ was the best cuhivar for planting in drought area. [ Ch, 2 tab. 23 ref. ]
中文关键词	树木生理学 ; 楸树 ; 水分指标 ; 水分特征曲线 ; 抗旱性
英文关键词	plant physiology Catalpa bungei water indexes culm-water characteristic curves drought resistance
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Forestry
WOS研究方向	Forestry
CSCD记录号	CSCD:3454996
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223024
作者单位	岑显超, 南京林业大学森林资源与环境学院, 南京, 江苏 210037, 中国.; 彭方仁, 南京林业大学森林资源与环境学院, 南京, 江苏 210037, 中国.; 陈隆升, 南京林业大学森林资源与环境学院, 南京, 江苏 210037, 中国.; 杨燕, 南京林业大学森林资源与环境学院, 南京, 江苏 210037, 中国.
推荐引用方式 GB/T 7714	岑显超,彭方仁,陈隆升,等. 楸树品种间水分特征曲线主要参数比较与抗旱性评价[J],2008,25(6):760-764.
APA	岑显超,彭方仁,陈隆升,&杨燕.(2008).楸树品种间水分特征曲线主要参数比较与抗旱性评价.浙江林学院学报,25(6),760-764.
MLA	岑显超,et al."楸树品种间水分特征曲线主要参数比较与抗旱性评价".浙江林学院学报 25.6(2008):760-764.