|Table of Contents|

Differences of Cadmium Stress on Seed Germination and Seedling Growth in the Wild Soybean and Cultivated Soybeans(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2019年02期
Page:
267-273
Research Field:
Publishing date:

Info

Title:
Differences of Cadmium Stress on Seed Germination and Seedling Growth in the Wild Soybean and Cultivated Soybeans
Author(s):
ZHAO Yi1;  YU Cui-mei1;  Yang Liu1;  MA Lian-ju2;  XIE Fu-ti1
（1.College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China; 2.College of Life Science，Shenyang Normal University, Shenyang 110034, China）
Keywords:
Cultivated soybean;  Wild soybean;  Cadmium stress;  Germination;  Seedling
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2019.02.0267
Abstract:
To screen the cadmium-tolerant soybean resources, the differences of cadmium stress on the germination and seedling growth of wild soybean and different cultivated soybean seeds were studied.Firstly 5 cadmium concentrations (5,10,25,40 mg?L-1) on the germination rate, germination energy, germination index,vigorin dex, root length and shoot length of wild soybean and cultivated soybean were compared to screen out cadmium sensitive characters and moderate cadmium concentration ,which would be used to compare the cadmium tolerance of wild soybean 1503, super high yield soybean (Shennong 9 and Liaodou 14) and common cultivated soybean (Liaodou 16 and Shennong 20).The results showed that germination rate, germination energy and germination index of the 1503 and Liaodou16 significantly lower than those of control under the treatment of higher concentration(25 or 40 mg?L-1) cadmium.Other treatments were not significantly different from the control group.While the vigor index, root length and shoot length were restrained evidently at lower concentrations (5 or 10 mg?L-1) cadmium and the inhibiting effect of cadmium stress was larger on the root length than the shoot length. The vigor index, root length and bud length were more sensitive to cadmium stress, which could be used as an important indicator to identify cadmium resistant materials and to monitor the degree of cadmium stress. The cadmium concentration of 5 mg?L-1 is moderate, which could be used to compare the cadmium tolerance of different varieties. According to comprehensive effect values in seedlings, 1503 were relatively strong cadmium tolerance, Shennong 20 was relatively weak cadmium tolerance. These soybean materials could be used to explore the tolerance mechanism of soybean under cadmium stress and as important genetic resources in anti-cadmium breeding of soybeans.

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Last Update: 2019-04-01