不同枣品种光合特性的比较研究  

Comparative study on photosynthetic characteristics of different varieties of jujube

作　　者：张舟[1] 吕芳德[1] 王森[1] 

机构地区：[1]中南林业科技大学,湖南长沙410004

出　　处：《中南林业科技大学学报》2014年第8期78-81,共4页Journal of Central South University of Forestry & Technology

基　　金：国家948项目"以色列鲜食枣品种及培育新技术引进"(2012-4-61);国家林业局标准项目"南方鲜食枣栽培技术规程"(2012-LY-197)

摘　　要：为了研究不同枣品种的光合特性差异,用Li-6400便携式光合测定仪对5个枣品种(中秋酥脆枣、以色列枣1号、以色列枣2号、以色列枣3号、柿饼枣)叶片的光合参数进行测定。结果表明:(1)5个枣品种的净光合速率(Pn)日变化均为"单峰"型曲线,均于9:00前后出现最高峰;日Pn最高值及平均值大小顺序均为:以色列枣3号>以色列枣1号>柿饼枣>中秋酥脆枣>以色列枣2号。(2)蒸腾速率的日变化曲线呈"单峰"状,中秋酥脆枣峰值出现在11:00前后,其他几个峰值均出现在13:00前后;水分利用率(WUE)的日平均值大小顺序为:中秋酥脆枣>以色列枣2号>以色列枣3号>以色列枣1号>柿饼枣。To study the differences of diverse jujube varieties in photosynthetic characteristics,the photosynthetic parameters of leaves of five jujube varieties（mid-autumn crisp jujube,Israeli jujube No.1,Israeli jujube No.2,Israeli jujube No.3,dried persimmon jujube） were measured with Li-6400 portable photosynthesis analyzer. The results show that（1） the diurnal variations of net photosynthetic rate（Pn） of the 5 jujube varieties all appeared unimodal curve,they peaked at around a.m. 9：00; The orders of highest values and the average values of daily Pn were：Israeli jujube No. 3〉Israeli jujube No. 1〉 dried persimmon jujube〉 mid-autumn crisp jujube 〉 Israeli jujube No.2;（2） the diurnal variation of transpiration rate presented single peak curve,the mid-autumn crisp jujube peaked at around a.m.11：00,while several other varieties peaked at around p.m.13：00. The orders of the daily average values of water use efficiency（WUE） of five varieties were：mid-autumn crisp jujube 〉Israeli jujube No.2 〉 Israeli jujube No. 3 〉 Israeli jujube No.1〉 dried persimmon jujube.

关 键 词：枣属 枣品种 以色列枣 光合特性 净光合速率 比较研究 

分 类 号：S722.39[农业科学—林木遗传育种]