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Effects of Salt Stress on Water Uptake and Hydrolytic Enzyme Activities During Soybean Seed Germination(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2017年01期
Page:
74-77
Research Field:
Publishing date:

Info

Title:
Effects of Salt Stress on Water Uptake and Hydrolytic Enzyme Activities During Soybean Seed Germination
Author(s):
XU Fen-fen;  CHU Jie-yu;  LIU Yu ; XU Peng;  HU Zhi-tao
Life Science College,Shangrao Normal Unversity, Shangrao 334000, China
Keywords:
Salt stress;  Soybean;  Seed germination;  Amylase enzyme activity;  Protease enzyme activity
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2017.01.0074
Abstract:
The effects of salt stress on the water uptake rate and the activity of hydro-lase in soybean seeds were investigated under different salt concentrations. The results showed that the response to NaCl stress of the two varieties of soybean was different. The water absorption and germination of early-maturing soybean seeds under the low concentration (50 mmol·L-1) of NaCl were promoted, but were inhibited in the NO.1 soybean. When the salt concentration reached 100 mmol·L-1， the germination rate, germination potential and germination index of early-mature soybean and No.1 soybean seeds were all significantly (P<0.05) and extremely significant (P<0.01) inhibited. High salt concentration significantly inhibited the water uptake of soybean seeds, resulting in the decreasing of amylase activity and protease activity, which was the main reason for the inhibition of soybean seed germination under high salt stress. The faster rate of water absorption and the higher hydrolytic enzyme activities of early-maturing soybean under salt stress were the reason for its higher germination rate than that of No.1 soybean.

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Last Update: 2017-03-14