Salt Tolerance Studies in Four Energy Plants at Germination Period(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:

2010年06期

Page:

1091-1094

Research Field:

Publishing date:

Info

Title:

Salt Tolerance Studies in Four Energy Plants at Germination Period

Author(s):

GAO Yong¹; YANG Jing-hui¹; LI Hong-ping¹; LI Jian-ke¹; HUANG Jun-xuan¹; ZHANG Wei-yu²;  Takano³; Yujisakai³

1. Tianjin Japan Rural Environmental Resources Cooperative Research Center， Department of Horticulture, Tianjin Agricultural University, Tianjin 300384;

2. Tianjin Japan Rural Environmental Resources Cooperative Research Center，Department of Mechanical and Electrical Engineering, Tianjin Agricultural College, Tianjin 300384, China;

3.University of Tokyo, Tokyo 11328656, Japan

Keywords:

Flax; Soybean; Rape; Helianthus; Semi-lethal salt concentration; Salt tolerance; Energy plants

PACS:

S565.1

DOI:

10.11861/j.issn.1000-9841.2010.06.1091

Abstract:

In order to study the salt tolerance in germination period of different energy plants. Seeds of Linum usitatissimum, Glycine max, Helianthus annuus and ?Brassica campestris were treated with different concentrations of NaCl solutions, the germination related indexes such as germination rate (GR), relative germination rate (RGR), germination potential (GP) and relative radical length (RRL) were calculated. The salt-tolerance concentration, semi-lethal salt concentration, limit concentration of salt tolerance and the membership function of each indicator were analyzed. With the increasing of NaCl concentration, all the indicators declined and the differences between varieties were obvious. The relative germination rate of flax, rape did not changed remarkably and that of soybean decreased greatly under 3～6 g·L^-1 NaCl treatment. When the salt concentration was 6 g·L^-1, the relative radical length of four plants reduced significantly, and the decrease extent of oil sunflower was the most than others plant, which following by flax and soybean and the decrease extent of rape was the least. In 12 g·L^-1 salt concentration, relative radical length of various kinds of energy plants was less 11%. The highest salt-tolerance concentration of the flax was 6% and 2 times than that of soybean, rape seed and sunflower. Semi-lethal salt concentration of flax and rape was the highest(9 g·L^-1), followed by soybean (6 g·L^-1)and sunflower (3 g·L^-1).The comprehensive analysis of salt tolerance showed that in various salt concentrations, the salt tolerance of four species seedling from higher to lower was flax, rape, soybean and sunflower.

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