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IDENTIFICATION OF CHILLING TOLERANCE IN EARLY SOYBEAN VARIETIESAT GERMINATION AND SEEDLING GROWTH STAGES(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2006年03期
Page:
299-303
Research Field:
Publishing date:

Info

Title:
IDENTIFICATION OF CHILLING TOLERANCE IN EARLY SOYBEAN VARIETIESAT GERMINATION AND SEEDLING GROWTH STAGES
Author(s):
Song You 1 　 Wang Jian 2
(1. Heilongjiang Engineering Center of Soybean , Harbin ,150001;2. Soybean Institute of Northeast Agricultural University , Harbin 150030)
Keywords:
Soybean ; Chilling tolerance identification; Cluster analysis; Correlation analysis
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2006.03.0299
Abstract:
T he chilling tolerance of nine soybean varieties at germination and seedling growth stages wereinvestigated by determining traits of germination characteristics and seedling quality at normal temperature(25 ℃)and low temperature (10 ℃)stress. The ratios (relative values)of trait values at low temperatureto those at normal temperature were used to assess chilling tolerance. The results showed that the seedlingof soybean verieties was more sensitive than root to low temperature , dry weight of root and seedling inchilling tolerance lines were not reduced by low temperature stress. T he cluster analysis was used to solveassessing difficulty of chilling tolerance due to small differences among relative values in soybean varieties.Nine soybean varieties were clustered into three groups :chilling tolerance , intermediate chilling to ler-ance and chilling sensitivity. The correlation analysis showed that the relative values of germination per-centage , the height of seedling , dry weight of seedling shoot and root were significantly correlated witheach other ;they were suitable parameters for evaluating chilling tolerance.

References:

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Last Update: 2016-12-15