Chlorophyll Content, Chlorophyll Fluorescence and Water Deficit in Spring Wheat

被引：0

作者：

J. M. Nyachiro

K. G. Briggs

J. Hoddinott

A. M. Johnson-Flanagan

机构：

[1] Agriculture and Agri-Food Canada,Semiarid Prairie Agricultural Research Centre

[2] University of Alberta,Department of Agricultural, Food, and Nutritional Science

[3] Faculty of Agriculture Forestry and Home Economics,Department of Biological Sciences

[4] University of Alberta,undefined

[5] Faculty of Science,undefined

来源：

Cereal Research Communications | 2001年 / 29卷

关键词：

Water deficit; chlorophyll; fluorescence; photosynthetic efficiency; wheat cultivars;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Using greenhouse techniques that nearly-simulate field water deficit would be a supplemental method for screening potential cultivars adapted to water deficit environments. The objective of this study was to determine if there were differential responses to water deficit in chlorophyll content and chlorophyll fluorescence, and determine the drought susceptibility index (DSI) amongst eight genetically diverse wheat cultivars. An experiment was conducted in three replicates where chlorophyll content and chlorophyll fluorescence were measured at 30 days after planting following (a) an early seedling stage water deficit treatment, and (b) a non-water-deficit treatment. A separate experiment was conducted, using a common protocol, to determine the DSI. Water deficit decreased chlorophyll a, b, and total chlorophyll content in all cultivars and caused a decrease in photosynthetic efficiency (PSE) by between 44.5 and 55.7%. Results showed significant (P < 0.05) cultivar x water treatment interaction for chlorophyll a, total chlorophyll and PSE and cultivars differed significantly for DSL

引用

页码：135 / 142

页数：7

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