|Table of Contents|

Optimal Moisture Content and Longevity of Soybean Seeds Stored at Different Climatic Zones under Ambient Condition(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2014年05期
Page:
685-690
Research Field:
Publishing date:

Info

Title:
Optimal Moisture Content and Longevity of Soybean Seeds Stored at Different Climatic Zones under Ambient Condition
Author(s):
ZHOU Jing; XIN Xia; YIN Guang-kun; CHEN Xiao-ling; ZHANG Jin-mei; LU Xin-xiong
National Genebank of China/Institute of Crop Sciences,Chinese Academy of Agricultural Sciences,Beijing 100081,China
Keywords:
Soybean; Seed; Ambient storage; Optimal moisture content; Seed longevity; Germplasm conservation
PACS:
S565.1
DOI:
10.11861/j.issn.1000-9841.2014.05.0685
Abstract:
To investigate the relationship between the optimal moisture content and longevity of soybean seeds,seeds with different moisture content were stored for 15 years at 6 climatic zones,including Xining,Harbin,Beijing,Urumqi,Sanya and Nanchang.Seed viability and vigor were monitored yearly,and then seed longevity was calculated.The results showed that seed drying to 3.5% moisture content did not bring significant effect on seed viability and vigor.However,further drying,i.e.moisture content equal to or lower than 3.0% did reduce seed viability and vigor.The optimal moisture contents for seed storage under ambient storage were 5.0%-6.0%,which was widely adaptable to the six climatic zones.The optimal moisture content was significantly correlated with the mean annual temperature and accumulated temperature(≥0℃).The higher the mean annual temperature and accumulated temperature(≥0℃),the narrower the optimal moisture content range,vice versa.The safe storage life(time taken for seed viability drop to 85% of the initial viability)of seed with optimal moisture content being stored at Xining and Harbin were 11 and 9 years,respectively,and the lifespan(P50,time taken for seed viability drop to 50% of the initial viability)was even longer than 12 years.Therefore,the longevity of soybean seeds under ambient storage could be significantly prolonged,even longer than mid-term storage,by drying the seeds to the optimal moisture contents and packaging the seeds with aluminum foil bags.

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Last Update: 2014-12-25