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Regulation of DCPTA on Soybean Seedling Growth under Drought Stress(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2016年01期
Page:
86-90
Research Field:
Publishing date:

Info

Title:
Regulation of DCPTA on Soybean Seedling Growth under Drought Stress
Author(s):
LI Xin-yuan
Qiqhaer Branch of Heilongjiang Academy of Agricultrral Science,Qiqihaer 161006, China
Keywords:
Drought stress Soybean seedling DCPTA Drought resistance Chlorophy fluorescence characteristics Protective enzymes
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2016.01.0086
Abstract:
The objective of this study is to determine the mechanisms of soybean seedlings leaf photosynthetic characteristics, protective enzymes and chlorophyll fluorescence characteristics regulation under drought resistance by foliar application of tertiary amine active DCPTA. Nenfeng 20 growing in pot under greenhouse was treated by 15% PEG-6000 to simulate drought conditions. Four different concentrations were used as treatments, including 0, 20, 40 and 60 mg.L-1and water was used as control. The result indicated that the photosynthetic rate, transpiration rate, stomatal conductance and chlorophyll content, as well as .Fm, Fv/Fm and qP increased significantly while the intercellular CO2concentration and qNdecreased after DCTA treatment.DCTA also promoted the activity of protective enzymes and the accumulation of proline in soybean leaves 60 mg.L-1was the most optimized concentration of CAT and proline, while 40 mg?L-1?was the optimum treatment for other parameters.

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Last Update: 2016-01-29